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Materials Research Institute

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Prof William Gillin

Professor of Experimental Physics /
Director for the Materials Research Institute

Department School of Physics and Astronomy
 G O Jones 123, Mile End
Telephone +44 (0)20 7882 5798
Email w.gillin@qmul.ac.uk
Homepage http://ph.qmul.ac.uk/directory/w.gillin

Research Keywords

Semiconductors, Organic semiconductors, Optoelectronic properties, Spin transport, Organic Photonics

Research Interests

William Gillin works primarily on the electrical and optical properties of organic materials. He currently has two main areas of research. Organic gain materials for optical amplifiers and lasers based on lanthanide containing molecules and organic spintronics.

Lanthanide ions, such as erbium, are widely used in optical amplifiers and lasers due to their long intrinsic lifetime which makes population inversion possible. However, this same property means that they are very poor at absorbing light so powerful pump sources, such as lasers, are required to make optical amplifiers work. By incorporating the ion into an organic host it is possible to excite the organic directly and then transfer the energy directly to the lanthanide ion; this is called sensitization. Using this approach it may be possible to replace the high power pump laser with low cost LEDs. We have developed novel fluorinated organic molecules that allow us to produce materials where the quantum efficiency of the erbium ions is >50% and which exhibit sensitization of a factor of >10000. Using this approach we have demonstrated a prototype optical amplifier, operating at 1.5µm, that is deposited onto a silicon chip which has demonstrated population inversion when pumped from a low power light source.

Organic spintronics is the control and manipulation of electronic spin on individual organic molecules within an organic electronic device. This technology can, for example, be used to produce devices that are highly sensitive to weak magnetic fields. We have a programme that works on producing organic spinvalves and understanding spin injection and extraction in these devices and the role of interfacial layers on controlling those processes. We also work on understanding the spin interactions that occur within devices such as organic light emitting diodes and organic photovoltaic cells. Controlling these processes is vital to improving device performance as many of the quenching mechanisms are highly spin dependant.

Key Publications

Zhu J, McMorrow J, Crespo-Otero R, Ao G, Zheng M, Gillin WP and Palma M (2016). Solution-Processable Carbon Nanoelectrodes for Single-Molecule Investigations. J Am Chem Soc  vol. 138, (9) 2905-2908. 10.1021/jacs.5b12086

Ye HQ, Li Z, Peng Y, Wang CC, Li TY, Zheng YX, Sapelkin A, Adamopoulos G, Hernandez I, Wyatt PB and Gillin WP (2014). Organo-erbium systems for optical amplification at telecommunications wavelengths. Nature Publishing Group  Nature Materials  vol. 13, (April 2014) 382-386. 10.1038/NMAT3910

Schulz L, Nuccio L, Willis M, Desai P, Shakya P, Kreouzis T, Malik VK, Bernhard C, Pratt FL, Morley NA, Suter A, Nieuwenhuys GJ, Prokscha T, Morenzoni E, Gillin WP and Drew AJ (2011). Engineering spin propagation across a hybrid organic/inorganic interface using a polar layer. Nat Mater  vol. 10, (1) 39-44. 10.1038/nmat2912

Gillin WP, Zhang SJ, Rolfe NJ, Desai P, Shakya P, Drew AJ and Kreouzis T (2010). Determining the influence of excited states on current transport in organic light emitting diodes using magnetic field perturbation. Phys Rev B  vol. 82, (19) 10.1103/PhysRevB.82.195208

Song JY, Stingelin N, Drew AJ, Kreouzis T and Gillin WP (2010). Effect of excited states and applied magnetic fields on the measured hole mobility in an organic semiconductor. Phys Rev B  vol. 82, (8) 10.1103/PhysRevB.82.085205

2017

Lu H, Peng Y, Ye HQ, Cui X, Hu JX, Gu H, Khlobystov A, Green M, Blower P, Wyatt PB, GILLIN WP and Hernandez I (2017). Sensitization, energy transfer and infra-red emission decay modulation in Yb3+-doped NaYF4 nanoparticles with visible light through a perfluoroanthraquinone chromophore. Nature Publishing Group  Scientific Reports  vol. 7, 10.1038/s41598-017-05350-9

2016

GILLIN WP, wyatt PB, Hernandez I, Ye HQ, Peng Y, Hu JX and LU H (2016). Functionalisation of ligands through click chemistry: long-lived NIR emission from organic Er(III) complexes with a perfluorinated core and a hydrogen-containing shell. Royal Society of Chemistry  Rsc Advances  10.1039/c6ra25494b

Gu H, Chang S, Lu H, Holford DF, Zhang T, Hu J, Gillin WP and Kreouzis T (2016). Impurity effects on charge transport and magnetoconductance in a single layer poly(3-hexyl-thiophene) device. Applied Physics Letters  vol. 108, (20) 203301-203301. 10.1063/1.4950859

Zhu J, McMorrow J, Crespo-Otero R, Ao G, Zheng M, Gillin WP and Palma M (2016). Solution-Processable Carbon Nanoelectrodes for Single-Molecule Investigations. J Am Chem Soc  vol. 138, (9) 2905-2908. 10.1021/jacs.5b12086

GILLIN WP, Zhang T, holford DF, Gu H, Kreouzis T and zhang S (2016). Hole-exciton interaction induced high field decay of magneto-electroluminescence in Alq3-based organic light-emitting diodes at room temperature. American Institute of Physics (Aip)  Applied Physics Letters  vol. 108, 10.1063/1.4939871

2015

Cui X, Mathe D, Kovacs N, Horvath I, Jauregui-Osoro M, Torres Martin de Rosales M, Mullen GED, Wong W, Yong Y, Kruger D, Khlobystov AN, Gimenez-Lopez M, Semjeni M, Szigeti K, Veres DS, Lu H, Hernandez I, Gillin WP, Protti A and Petik KK (2015). Synthesis, Characterization and Application of Core-Shell Co0.16Fe2.84O4@NaYF4(Yb, Er) and Fe3O4@NaYF4(Yb, Tm) Nanoparticle as Tri-modal (MRI, PET/SPECT and Optical) Imaging Agents. American Chemical Society  Bioconjugate Chemistry  vol. 27, (2) 319-328. 10.1021/acs.bioconjchem.5b00338

Coutinho JT, Pereira LCJ, Martín-Ramos P, Ramos Silva M, Zheng YX, Liang X, Ye HQ, Peng Y, Baker PJ, Wyatt PB and Gillin WP (2015). Field-induced single-ion magnetic behaviour in a highly luminescent Er<sup>3+</sup> complex. Materials Chemistry and Physics  vol. 160, 429-434. 10.1016/j.matchemphys.2015.04.059

Gu H, Chang S, Holford D, Zhang T, Lu H, Kreouzis T and Gillin WP (2015). Annealing and doping-dependent magnetoresistance in single layer poly(3-hexyl-thiophene) organic semiconductor device. Organic Electronics: Physics, Materials, Applications  vol. 17, 51-56. 10.1016/j.orgel.2014.11.019

Hernández I and Gillin WP (2015). Organic Chromophores-Based Sensitization of NIR-Emitting Lanthanides: Toward Highly Efficient Halogenated Environments. Handbook On The Physics and Chemistry of Rare Earths  10.1016/B978-0-444-63481-8.00269-4

2014

Zhang HT, Han S, Desai P, Zhan YQ, Li W, Si W, Scott K, Drew AJ, Gillin WP, Zhang SJ and Kreouzis T (2014). Ferromagnetic-organic interfacial states and their role on low voltage current injection in tris-8-hydroxyquinloline (Alq3) organic spin valves. Applied Physics Letters  vol. 105, (20) 10.1063/1.4902539

Lu H, Gillin WP and Hernández I (2014). Concentration dependence of the up- and down-conversion emission colours of Er(3+)-doped Y2O3: a time-resolved spectroscopy analysis. Phys Chem Chem Phys  vol. 16, (38) 20957-20963. 10.1039/c4cp02028f

Coutinho JT, Pereira LCJ, Martín-Ramos P, Ramos Silva M, Zheng YX, Liang X, Ye HQ, Peng Y, Baker PJ, Wyatt PB and Gillin WP (2014). Field-induced single-ion magnetic behaviour in a highly luminescent Er3+ complex. Elsevier Ltd  Materials Chemistry and Physics  10.1016/j.matchemphys.2015.04.059

Gu H, Kreouzis T and Gillin WP (2014). The transition from bipolaron to triplet-polaron magnetoresistance in a single layer organic semiconductor device. Organic Electronics  vol. 15, (8) 1711-1716. 10.1016/j.orgel.2014.04.036

Peng Y, Ye H, Li Z, Motevalli M, Hernández I, Gillin WP and Wyatt PB (2014). Visible-Range Sensitization of Er3+-Based Infrared Emission from Perfluorinated 2-Acylphenoxide Complexes. American Chemical Society  J. Phys. Chem. Lett.  vol. 5, (9) 1560-1563. 10.1021/jz500519e

Droghetti A, Steil S, Grossmann N, Haag N, Zhang H, Willis M, Gillin WP, Drew AJ, Aeschlimann M, Sanvito S and Cinchetti M (2014). Electronic and magnetic properties of the interface between metal-quinoline molecules and cobalt. Physical Review B  vol. 89, (9) 10.1103/PhysRevB.89.094412

Zhang S, Willis M, Gotto R, Roy KA, Rolfe NJ, Kreouzis T and Gillin WP (2014). Understanding the role of electron and hole trions on current transport in aluminium tris(8-hydroxyquinoline) using organic magnetoresistance. Applied Physics Letters  vol. 104, (4) 10.1063/1.4863684

Zhang H, Desai P, Zhan YQ, Drew AJ, Gillin WP and Kreouzis T (2014). The importance of holes in aluminium tris-8-hydroxyquinoline (Alq(3)) devices with Fe and NiFe contacts. Applied Physics Letters  vol. 104, (1) 10.1063/1.4861120

You Y, Yang K, Yuan S, Dong S, Zhang H, Huang Q, Gillin WP, Zhan Y and Zheng L (2014). An organic multilevel non-volatile memory device based on multiple independent switching modes. Organic Electronics: Physics, Materials, Applications  vol. 15, (9) 1983-1989. 10.1016/j.orgel.2014.05.032

Ye HQ, Li Z, Peng Y, Wang CC, Li TY, Zheng YX, Sapelkin A, Adamopoulos G, Hernandez I, Wyatt PB and Gillin WP (2014). Organo-erbium systems for optical amplification at telecommunications wavelengths. Nature Publishing Group  Nature Materials  vol. 13, (April 2014) 382-386. 10.1038/NMAT3910

2013

Ye H, Peng Y, Li Z, Wang C-C, Zheng Y, Motevalli M, Wyatt PB, Gillin WP and Hernandez I (2013). Effect of Fluorination on the Radiative Properties of Er3+ Organic Complexes: An Opto-Structural Correlation Study. American Chemical Society  J Phys Chem C  vol. 117, (45) 23970-23975. 10.1021/jp4093282

Zhang S, Kreouzis T and Gillin WP (2013). Low temperature magnetic field effects on the efficiency of aluminium tris(8-hydroxyquinoline) based organic light emitting diodes in the absence of magnetoresistance. Synthetic Metals  vol. 173, 46-50. 10.1016/j.synthmet.2012.11.016

Gillin W and Morley N (2013). Special issue: Spins in Organic Semiconductors 2012. Synthetic Metals  vol. 173, 1-1. 10.1016/j.synthmet.2013.03.001

Nuccio L, Willis M, Schulz L, Fratini S, Messina F, D'Amico M, Pratt FL, Lord JS, McKenzie I, Loth M, Purushothaman B, Anthony J, Heeney M, Wilson RM, Hernández I, Cannas M, Sedlak K, Kreouzis T, Gillin WP and Bernhard C (2013). Importance of spin-orbit interaction for the electron spin relaxation in organic semiconductors. Phys Rev Lett  vol. 110, (21) 10.1103/PhysRevLett.110.216602

Prezioso M, Riminucci A, Graziosi P, Bergenti I, Rakshit R, Cecchini R, Vianelli A, Borgatti F, Haag N, Willis M, Drew AJ, Gillin WP and Dediu VA (2013). A single-device universal logic gate based on a magnetically enhanced memristor. Adv Mater  vol. 25, (4) 534-538. 10.1002/adma.201202031

Li Z, Dellali A, Malik J, Motevalli M, Nix RM, Olukoya T, Peng Y, Ye H, Gillin WP, Hernández I and Wyatt PB (2013). Luminescent Zinc(II) Complexes of Fluorinated Benzothiazol-2-yl Substituted Phenoxide and Enolate Ligands. American Chemical Society  Inorg Chem  vol. 52, (3) 1379-1387. 10.1021/ic302063u

Hernández I, Zheng Y-X, Motevalli M, Tan RHC, Gillin WP and Wyatt PB (2013). Efficient sensitized emission in Yb(III) pentachlorotropolonate complexes. Chemical Communications  vol. 49, (19) 1933-1935. 10.1039/c3cc38610d

2012

Zhang S, Rolfe NJ, Desai P, Shakya P, Drew AJ, Kreouzis T and Gillin WP (2012). Modeling of positive and negative organic magnetoresistance in organic light-emitting diodes. Physical Review B  vol. 86, (7) 10.1103/PhysRevB.86.075206

Khademi S, Song JY, Wyatt PB, Kreouzis T and Gillin WP (2012). Ambipolar charge transport in traditional organic hole transport layers. Adv Mater  vol. 24, (17) 2278-2283. 10.1002/adma.201103830

Drew AJ, Szulczewski G, Nuccio L and Gillin WP (2012). The role of interfaces in organic spin valves revealed through spectroscopic and transport measurements. Physica Status Solidi B-Basic Solid State Physics  vol. 249, (1) 9-17. 10.1002/pssb.201147157

2011

Schulz L, Willis M, Nuccio L, Shusharov P, Fratini S, Pratt FL, Gillin WP, Kreouzis T, Heeney M, Stingelin N, Stafford CA, Beesley DJ, Bernhard C, Anthony JE, McKenzie I, Lord JS and Drew AJ (2011). Importance of intramolecular electron spin relaxation in small molecule semiconductors. Phys Rev B  vol. 84, (8) 10.1103/PhysRevB.84.085209

Etchart I, Bérard M, Laroche M, Huignard A, Hernández I, Gillin WP, Curry RJ and Cheetham AK (2011). Efficient white light emission by upconversion in Yb(3+)-, Er(3+)- and Tm(3+)-doped Y2BaZnO5. Chem Commun (Camb)  vol. 47, (22) 6263-6265. 10.1039/c1cc11427a

Etchart I, Hernandez I, Huignard A, Berard M, Laroche M, Gillin WP, Curry RJ and Cheetham AK (2011). Oxide phosphors for light upconversion; Yb3+ and Tm3+ co-doped Y2BaZnO5. J Appl Phys  vol. 109, (6) 10.1063/1.3549634

Schulz L, Nuccio L, Willis M, Desai P, Shakya P, Kreouzis T, Malik VK, Bernhard C, Pratt FL, Morley NA, Suter A, Nieuwenhuys GJ, Prokscha T, Morenzoni E, Gillin WP and Drew AJ (2011). Engineering spin propagation across a hybrid organic/inorganic interface using a polar layer. Nat Mater  vol. 10, (3) 10.1038/nmat2962

Adamopoulos G, Bashir A, Gillin WP, Georgakopoulos S, Shkunov M, Baklar MA, Stingelin N, Bradley DDC and Anthopoulos TD (2011). Structural and Electrical Characterization of ZnO Films Grown by Spray Pyrolysis and Their Application in Thin-Film Transistors. Adv Funct Mater  vol. 21, (3) 525-531. 10.1002/adfm.201001089

Schulz L, Nuccio L, Willis M, Desai P, Shakya P, Kreouzis T, Malik VK, Bernhard C, Pratt FL, Morley NA, Suter A, Nieuwenhuys GJ, Prokscha T, Morenzoni E, Gillin WP and Drew AJ (2011). Engineering spin propagation across a hybrid organic/inorganic interface using a polar layer. Nat Mater  vol. 10, (1) 39-44. 10.1038/nmat2912

Etchart I, Hernandez I, Huignard A, Berard M, Gillin WP, Curry RJ and Cheetham AK (2011). Efficient oxide phosphors for light upconversion; green emission from Yb3+ and Ho3+ co-doped Ln(2)BaZnO(5) (Ln = Y, Gd). J Mater Chem  vol. 21, (5) 1387-1394. 10.1039/c0jm01652g

2010

Hernández I, Pathumakanthar N, Wyatt PB and Gillin WP (2010). Cooperative infrared to visible up conversion in Tb3+, Eu3+, And Yb3+ containing polymers. Adv Mater  vol. 22, (47) 5356-5360. 10.1002/adma.201002674

Gillin WP, Zhang SJ, Rolfe NJ, Desai P, Shakya P, Drew AJ and Kreouzis T (2010). Determining the influence of excited states on current transport in organic light emitting diodes using magnetic field perturbation. Phys Rev B  vol. 82, (19) 10.1103/PhysRevB.82.195208

Adamopoulos G, Bashir A, Thomas S, Gillin WP, Georgakopoulos S, Shkunov M, Baklar MA, Stingelin N, Maher RC, Cohen LF, Bradley DDC and Anthopoulos TD (2010). Spray-deposited Li-doped ZnO transistors with electron mobility exceeding 50 cm?/Vs. Adv Mater  vol. 22, (42) 4764-4769. 10.1002/adma.201001444

Song JY, Stingelin N, Drew AJ, Kreouzis T and Gillin WP (2010). Effect of excited states and applied magnetic fields on the measured hole mobility in an organic semiconductor. Phys Rev B  vol. 82, (8) 10.1103/PhysRevB.82.085205

Dhandapani D, Morley NA, Gibbs MRJ, Kreouzis T, Shakya P, Desai P and Gillin WP (2010). The Effect of Injection Layers on a Room Temperature Organic Spin Valve. Ieee T Magn  vol. 46, (6) 1307-1310. 10.1109/TMAG.2010.2043818

Etchart I, Huignard A, Berard M, Nordin MN, Hernandez I, Curry RJ, Gillin WP and Cheetham AK (2010). Oxide phosphors for efficient light upconversion: Yb3+ and Er3+ co-doped Ln(2)BaZnO(5) (Ln = Y, Gd). J Mater Chem  vol. 20, (19) 3989-3994. 10.1039/c000127a

2009

Rolfe NJ, Heeney M, Wyatt PB, Drew AJ, Kreouzis T and Gillin WP (2009). Elucidating the role of hyperfine interactions on organic magnetoresistance using deuterated aluminium tris(8-hydroxyquinoline). Phys Rev B  vol. 80, (24) 10.1103/PhysRevB.80.241201

Hernández I and Gillin WP (2009). Influence of high hydrostatic pressure on Alq3, Gaq3, and Inq3 (q = 8-hydroxyquinoline). J Phys Chem B  vol. 113, (43) 14079-14086. 10.1021/jp905108x

Zhang SJ, Song JY, Kreouzis T and Gillin WP (2009). Measurement of the intersystem crossing rate in aluminum tris(8-hydroxyquinoline) and its modulation by an applied magnetic field. J Appl Phys  vol. 106, (4) 10.1063/1.3204015

Zheng Y, Pearson J, Tan RHC, Gillin WP and Wyatt PB (2009). Erbium bis(pentafluorophenyl)phosphinate: a new hybrid material with unusually long-lived infrared luminescence (vol 20, pg S430, 2009). J Mater Sci-Mater El  vol. 20, (8) 788-788. 10.1007/s10854-009-9915-2

Hernández I, Tan RHC, Pearson JM, Wyatt PB and Gillin WP (2009). Nonradiative de-excitation mechanisms in long-lived erbium(III) organic compounds ErxY1-x[(p-CF3-C6F4)2PO2]3. J Phys Chem B  vol. 113, (21) 7474-7481. 10.1021/jp810932s

Drew AJ, Hoppler J, Schulz L, Pratt FL, Desai P, Shakya P, Kreouzis T, Gillin WP, Suter A, Morley NA, Malik VK, Dubroka A, Kim KW, Bouyanfif H, Bourqui F, Bernhard C, Scheuermann R, Nieuwenhuys GJ, Prokscha T and Morenzoni E (2009). Direct measurement of the electronic spin diffusion length in a fully functional organic spin valve by low-energy muon spin rotation. Nat Mater  vol. 8, (2) 109-114. 10.1038/NMAT2333

Zheng Y, Pearson J, Tan RHC, Gillin WP and Wyatt PB (2009). Erbium bis(pentafluorophenyl) phosphinate: a new hybrid material with unusually long-lived infrared luminescence. Journal of Materials Science-Materials in Electronics  vol. 20, 430-434. 10.1007/s10854-008-9662-9

2008

Song JY, Stingelin N, Gillin WP and Kreouzis T (2008). Reduced hole mobility due to the presence of excited states in poly-(3-hexylthiophene). Appl Phys Lett  vol. 93, (23) 10.1063/1.3049129

Shakya P, Desai P, Kreouzis T, Gillin WP, Tuladhar SM, Ballantyne AM and Nelson J (2008). The effect of applied magnetic field on photocurrent generation in poly-3-hexylthiophene:[6,6]-phenyl C61-butyric acid methyl ester photovoltaic devices. Journal of Physics-Condensed Matter  vol. 20, (45) 10.1088/0953-8984/20/45/452203

Rolfe N, Desai P, Shakya P, Kreouzis T and Gillin WP (2008). Separating the roles of electrons and holes in the organic magnetoresistance of aluminum tris(8-hydroxyquinoline) organic light emitting diodes. J Appl Phys  vol. 104, (8) 10.1063/1.3000454

Shakya P, Desai P, Somerton M, Gannaway G, Kreouzis T and Gillin WP (2008). The magnetic field effect on the transport and efficiency of group III tris(8-hydroxyquinoline) organic light emitting diodes. J Appl Phys  vol. 103, (10) 10.1063/1.2932079

Shakya P, Desai P, Curry RJ and Gillin WP (2008). Improved electron injection into Alq(3) based devices using a thin Erq(3) injection layer. J Phys D Appl Phys  vol. 41, (8) 10.1088/0022-3727/41/8/085108

Zheng YX, Motevalli M, Tan RHC, Abrahams I, Gillin WP and Wyatt PB (2008). Near IR luminescent rare earth 3,4,5,6-tetrafluoro-2-nitrophenoxide complexes: Synthesis, X-ray crystallography and spectroscopy. Polyhedron  vol. 27, (5) 1503-1510. 10.1016/j.poly.2008.01.022

Drew AJ, Pratt FL, Hoppler J, Schulz L, Malik-Kumar V, Morley NA, Desai P, Shakya P, Kreouzis T, Gillin WP, Kim KW, Dubroka A and Scheuermann R (2008). Intrinsic mobility limit for anisotropic electron transport in Alq3. Phys Rev Lett  vol. 100, (11) 10.1103/PhysRevLett.100.116601

Tan RHC, Pearson JM, Zheng Y, Wyatt PB and Gillin WP (2008). Evidence for erbium-erbium energy migration in erbium(III) bis(perfluoro-p-tolyl)phosphinate. Appl Phys Lett  vol. 92, (10) 10.1063/1.2896105

Shakya P, Desai P, Kreouzis T and Gillin WP (2008). Magnetoresistance in triphenyl-diamine derivative blue organic light emitting devices. J Appl Phys  vol. 103, (4) 10.1063/1.2885097

2007

Desai P, Shakya P, Kreouzis T and Gillin WP (2007). Magnetoresistance in organic light-emitting diode structures under illumination. Phys Rev B  vol. 76, (23) 10.1103/PhysRevB.76.235202

Desai P, Shakya P, Kreouzis T and Gillin WP (2007). The role of magnetic fields on the transport and efficiency of aluminum tris(8-hydroxyquinoline) based organic light emitting diodes. J Appl Phys  vol. 102, (7) 10.1063/1.2787158

Penna S, Reale A, Pizzoferrato R, Beleffi GMT, Musella D and Gillin WP (2007). Near-infrared photoluminescence of erbium tris(8-hydroxyquinoline) spin-coated thin films induced by low coherence light sources. Appl Phys Lett  vol. 91, (2) 10.1063/1.2755933

Desai P, Shakya P, Kreouzis T, Gillin WP, Morley NA and Gibbs MRJ (2007). Magnetoresistance and efficiency measurements of Alq(3)-based OLEDs. Phys Rev B  vol. 75, (9) 10.1103/PhysRevB.75.094423

Bollet F and Gillin WP (2007). Characterization of interdiffusion around miscibility gap of lattice matched InGaAs/InP quantum wells by high resolution x-ray diffraction. J Appl Phys  vol. 101, (1) 10.1063/1.2404784

2006

Tan RHC, Motevalli M, Abrahams I, Wyatt PB and Gillin WP (2006). Quenching of IR luminescence of erbium, neodymium, and ytterbium beta-diketonate complexes by ligand C-H and C-D bonds. J Phys Chem B  vol. 110, (48) 24476-24479. 10.1021/jp0654462

Winkless L, Tan RHC, Zheng Y, Motevalli M, Wyatt PB and Gillin WP (2006). Quenching of Er(III) luminescence by ligand C-H vibrations: Implications for the use of erbium complexes in telecommunications. Appl Phys Lett  vol. 89, (11) 10.1063/1.2345909

2005

Moreau P, Raulic M, P'ng KMY, Gannaway G, Anderson P, Gillin WP, Bushby AJ and Dunstan DJ (2005). Measurement of the size effect in the yield strength of nickel foils. Phil Mag Lett  vol. 85, (7) 339-343. 10.1080/09500830500071564

Bollet F, Gillin WP, Hopkinson M and Gwilliam R (2005). Concentration dependent interdiffusion in InGaAs/GaAs as evidenced by high resolution x-ray diffraction and photoluminescence spectroscopy. J Appl Phys  vol. 97, (1) 10.1063/1.1825613

2004

Desai P, Somerton M, Curry RJ and Gillin WP (2004). Time-resolved photoluminescence excitation characterisation of lanthanide and group III tris-(8-hydroxyquinoline) molecules. Ieice T Electron  vol. E87C, (12) 2023-2027.

Zheng YX, Zhou YH, Yu JB, Yu YN, Zhang HJ and Gillin WP (2004). Electrolummescence from (5)Do -> F-7(J) and D-5(1) -> F-7(J) (J=0-4) transitions with a europium complex as emitter. J Phys D Appl Phys  vol. 37, (4) 531-534. 10.1088/0022-3727/37/4/004

2003

Dunstan D, BUSHBY AJ and Gillin W (2003). III-V semiconductors solve mechanical riddle. III-Vs Review  vol. 16, (9) 39-41. 10.1016/S0961-1290(03)00084-X

Bollet F and Gillin WP (2003). Photoluminescence and x-ray diffraction studies of the diffusion behavior of lattice matched InGaAs/InP heterostructures. J Appl Phys  vol. 94, (2) 988-992. 10.1063/1.1586975

Bollet F, Gillin WP, Hopkinson M and Gwilliam R (2003). On the diffusion of lattice matched InGaAs/InP microstructures. J Appl Phys  vol. 93, (7) 3881-3885. 10.1063/1.1559002

2002

Curry RJ, Gillin WP, Clarkson J and Batchelder DN (2002). Morphological study of aluminum tris(8-hydroxyquinoline) thin films using infrared and Raman spectroscopy. J Appl Phys  vol. 92, (4) 1902-1905. 10.1063/1.1495527

Sutton JA, Gillin WP, Grattan TJ, Clarke GD and Kilminster SG (2002). A new laser pain threshold model detects a faster onset of action from a liquid formulation of 1 g paracetamol than an equivalent tablet formulation. Brit J Clin Pharmaco  vol. 53, (1) 43-47. 10.1046/j.0306-5251.2001.01527.x

2001

Curry RJ and Gillin WP (2001). Electroluminescence of organolanthanide based organic light emitting diodes. Curr Opin Solid St M  vol. 5, (6) 481-486. 10.1016/S1359-0286(02)00010-4

Khreis OM, Gillin WP, Somerton M and Curry RJ (2001). 980 nm electroluminescence from ytterbium tris(8-hydroxyquinoline). Elsevier/Science Direct  Organic Electronics  vol. 2, (1) 45-51. 10.1016/S1566-1199(00)00014-8

2000

Curry RJ, Gillin WP, Knights AP and Gwilliam R (2000). Silicon-based organic light-emitting diode operating at a wavelength of 1.5 mu m. Applied Physics Letters  vol. 77, (15) 2271-2273. 10.1063/1.1316064

Khreis OM, Curry RJ, Somerton M and Gillin WP (2000). Infrared organic light emitting diodes using neodymium tris-(8-hydroxyquinoline). Journal of Applied Physics  vol. 88, (2) 777-780. 10.1063/1.373803

Curry RJ and Gillin WP (2000). Radiative recombination mechanisms in aluminum tris(8-hydroxyquinoline): Evidence for triplet exciton recombination. Journal of Applied Physics  vol. 88, (2) 781-785. 10.1063/1.373802

1999

Curry RJ and Gillin WP (1999). 1.54 mu m electroluminescence from erbium (III) tris(8-hydroxyquinoline) (ErQ)-based organic light-emitting diodes. Applied Physics Letters  vol. 75, (10) 1380-1382. 10.1063/1.124700

Curry RJ and Gillin WP (1999). 1.54 ?m electroluminescence from erbium (III) tris(8-hydroxyquinoline) (ErQ)-based organic light-emitting diodes. Applied Physics Letters  vol. 75, (10) 1380-1382.

Gillin WP and Curry RJ (1999). Erbium (III) tris(8-hydroxyquinoline) (ErQ): A potential material for silicon compatible 1.5 mu m emitters. Applied Physics Letters  vol. 74, (6) 798-799. 10.1063/1.123371

Gillin WP (1999). Effect of strain on the interdiffusion of InGaAs/GaAs heterostructures. Journal of Applied Physics  vol. 85, (2) 790-793. 10.1063/1.369160

1998

Naveed AT, Huda MQ, Abd El-Rahman KF, Hartung J, Evans-Freeman JH, Peaker AR, Houghton DC, Jeynes C and Gillin WP (1998). Erbium in silicon-germanium quantum wells. Journal of Luminescence  vol. 80, (1-4) 381-386. 10.1016/S0022-2313(98)00133-1

Ghosh S, Arora BM, Homewood KP, Gillin WP, Khreis OM and Singer KE (1998). Contactless electro-reflectance study of interdiffusion in heat-treated GaAs1-xSbx/GaAs single quantum wells. Journal of Physics-Condensed Matter  vol. 10, (43) 9865-9874. 10.1088/0953-8984/10/43/031

Khreis OM, Homewood KP, Gillin WP and Singer KE (1998). Intermixing in GaAsSb/GaAs single quantum wells. Journal of Applied Physics  vol. 84, (7) 4017-4019. 10.1063/1.368583

Khreis OM, Homewood KP and Gillin WP (1998). Interdiffusion in InGaAs/GaAs: The effect of growth conditions. Journal of Applied Physics  vol. 84, (1) 232-236. 10.1063/1.368079

1997

Huda MQ, Peaker AR, Evans-Freeman JH, Houghton DC and GILLIN WP (1997). Strong luminescence from erbium in Si/Si1-xGex/Si quantum well structures. Electron. Letts.  vol. 33, 1182-1183. 10.1049/el:19970750

Wee SF, Chai MK, Homewood KP and Gillin WP (1997). The activation energy for GaAs/AlGaAs interdiffusion. Journal of Applied Physics  vol. 82, (10) 4842-4846. 10.1063/1.366345

Khreis OM, Gillin WP and Homewood KP (1997). Interdiffusion: A probe of vacancy diffusion in III-V materials. Physical Review B  vol. 55, (23) 15813-15818. 10.1103/PhysRevB.55.15813

Jafri ZH and Gillin WP (1997). The Fermi level effect in III-V intermixing: The final nail in the coffin? Journal of Applied Physics  vol. 81, (5) 2179-2184. 10.1063/1.364270

1996

Chai MK, Wee SF, Homewood KP, Gillin WP, Cloitre T and Aulombard RL (1996). An optical study of interdiffusion in ZnSe/ZnCdSe. Applied Physics Letters  vol. 69, (11) 1579-1581. 10.1063/1.117036

1995

Cristiano F, Zhang JP, Wilson RJ, GILLIN WP and Hemment PLF (1995). Control of defect in C+, Ge+, and Er+ implanted Si using post amorphisation and solid phase regrowth. Nuclear Instruments and Methods B  vol. 96, 265-270. 10.1016/0168-583X(94)00497-8

GILLIN WP, Perrin S and Homewood KP (1995). Comparative study of silicon nitride and phosphine overpressure annealing on the interdiffusion of InGaAsP/InGaAs heterostructures. Journal of Applied Physics  vol. 77, 1463-1465. 10.1063/1.358893

1994

Kozanecki A and GILLIN WP (1994). Characterisation of thermally annealed InGaAs/GaAs single quantum wells by optical spectroscopy and ion beam techniques. Applied Physics Letters  vol. 64, 40-42. 10.1063/1.110914

Kozanecki A, Sealy BJ, GILLIN WP and Jeynes CJ (1994). Interdiffusion and thermally induced strain relaxation in GaAs/InGaAs/GaAs single quantum well structures. Nuclear Instruments and Methods in Physics Research B  192-196. 10.1016/0168-583X(94)95812-2

GILLIN WP, Kimber AC, Dunstan DJ and Webb RP (1994). Diffusion of ion beam created vacancies and their effect on intermixing; a Gambler?s Ruin approach. Journal of Applied Physics  vol. 76, 3367-3371. 10.1063/1.357462

Kozanecki A, Gillin WP, Sealy BJ and Singer KE (1994). Thermally induced compositional disordering of InGaAs/GaAs and GaAsSb/GaAs single quantum wells. Materials Science Forum  vol. 143-4, (pt 1) 605-610.

Gillin WP and Dunstan DJ (1994). Strain and interdiffusion in semiconductor heterostructures. Phys Rev B Condens Matter  vol. 50, (11) 7495-7498. 10.1103/PhysRevB.50.7495

Rao SS, Gillin WP and Homewood KP (1994). Interdiffusion of the group-III sublattice in In-Ga-As-P/In-Ga-As-P and In-Ga-As/In-Ga-As heterostructures. Phys Rev B Condens Matter  vol. 50, (11) 8071-8073. 10.1103/PhysRevB.50.8071

Peyre H, Camassel J, Gillin WP, Homewood KP and Grey R (1994). Thermally induced change in the profile of GaAs/AlGaAs quantum wells. Materials Science and Engineering B  vol. 28, (1-3) 332-336. 10.1016/0921-5107(94)90077-9

1993

GILLIN WP, Bradley IV, Homewood KP and Webb RP (1993). The effect of gallium implantation on the intermixing of InGaAs/GaAs strained quantum wells. Solid State Communications  vol. 85, 197-198. 10.1016/0038-1098(93)90436-Q

GILLIN WP, Dunstan DJ, Homewood KP, Howard LK and Sealy BJ (1993). Interdiffusion in InGaAs/GaAs quantum well structures as a function of depth. Journal of Applied Physics  vol. 73, 3782-3786.

Bradley IV, GILLIN WP, Homewood KP and Webb RP (1993). The effects of ion implantation on the interdiffusion coefficient in InGaAs/GaAs quantum well structures. Journal of Applied Physics  vol. 73, 1686-1692. 10.1063/1.353204

Bradley IV, GILLIN WP, Homewood KP and Grey R (1993). Comparison of the effects of ion implantation induced interdiffusion in GaAs/AlGaAs and InGaAs/GaAs single quantum wells. Nuclear Instruments and Methods in Physics Research B  vol. 80, 747-750. 10.1016/0168-583X(93)90673-T

GILLIN WP, Bradley IV, Howard LK, Gwilliam R and Homewood KP (1993). The effects of silicon and beryllium on the interdiffusion of GaAs/AlGaAs and InGaAs/GaAs quantum well structures. Journal of Applied Physics  vol. 73, 7715-7719. 10.1063/1.353969

GILLIN WP, Rao SS, Bradley IV, Homewood KP, smith AD and briggs ATR (1993). Vacancy controlled interdiffusion of the Group V sublattice in strained In0.66Ga0.33As/In0.66Ga0.33As0.7P0.3 quantum wells. Applied Physics Letters  vol. 63, 797-799. 10.1063/1.109911

Kozanecki A and GILLIN WP (1993). Thermally induced intermixing of InGaAs/GaAs single quantum wells. Acta Physica Polonica A  vol. 84, 621-624. 10.12693/APhysPolA.84.621

GILLIN WP, Bradley IV, Rao SS, Homewood KP, Sealy BJ, Howard LK, Smith AD and Briggs ATR (1993). Vacancy controlled interdiffusion in III-V heterostructures. Material Science and Engineering 8  281-283. 10.1016/0921-5107(93)90367-V

Gillin WP, Dunstan DJ, Homewood KP, Howard LK and Sealy BJ (1993). Interdiffusion in InGaAs/GaAs quantum well structures as a function of depth. Journal of Applied Physics  vol. 73, (8) 3782-3786. 10.1063/1.352884

GILLIN WP, Peyre H, Camassel J, Homewood KP, Bradley IV and Grey R (1993). The effect of the thermal interdiffusion on the excitonic reflectivity spectra of InGaAs/GaAs quantum well structures. Journal De Physique Iv  vol. 3, 291-294.

1992

GILLIN WP (1992). Photoluminescence of acceptor states in mercury implanted gallium arsenide. Journal of Applied Physics  vol. 71, 2021-2022. 10.1063/1.351142

Mahmood F, Ahmed H, Jeynes CJ and GILLIN WP (1992). Reactive formation of cobalt silicide on single crystal silicon under rapid electron beam heating. Applied Surface Science  vol. 59, 55-63. 10.1016/0169-4332(92)90168-W

1991

GILLIN WP, Homewood KP, Sealy BJ and Roberts J (1991). Photoluminescence of deep levels in S implanted AlGaAs. Applied Physics Letters  vol. 58, 1404-1406. 10.1063/1.105206

GILLIN WP, Zhang JP and Sealy BJ (1991). Rutherford backscattering and secondary ion mass spectrometry studies of Er implanted silicon. Solid State Communications  vol. 77, 907-910. 10.1016/0038-1098(91)90344-U

Soares JC, Melo AA, Alves E, da Silva MF, GILLIN WP and Sealy BJ (1991). Lattice site location and out diffusion of Hg implanted GaAs. Nuclear Instruments and Methods in Physics Research B  vol. 59, 1090-1093. 10.1016/0168-583X(91)95771-5

GILLIN WP, Sealy BJ and Homewood KP (1991). Thermal interdiffusion in InGaAs/GaAs and GaAsSb/GaAs strained quantum wells as a function of doping density. Optical and Quantum Electronics  vol. 23, S975-S980. 10.1007/BF00624986

GILLIN WP, Homewood KP, Howard LK and Emeny MT (1991). Thermal interdiffusion in InGaAs/GaAs strained quantum wells as a function of doping density. Superlattices and Microstructures  vol. 9, 39-42. 10.1016/0749-6036(91)90089-A

Whitehead NJ, Gillin WP, Bradley IV, Weiss BL and Claxton P (1991). Erratum: Disorder-induced mixing of InGaAs/InP multiple quantum wells by phosphorus implantation for optical wave-guides (Semiconductor Science and Technology (1990) 5 (1063-1066). Semiconductor Science and Technology  vol. 6, (11) 10.1088/0268-1242/5/11/515

1990

GILLIN WP, Tang YS, Whitehead NJ, Homewood KP, Sealy BJ, Emeny MT and Whitehouse CR (1990). Thermal processing of strained GaInAs/GaAs high hole mobility transistor structures. Applied Physics Letters  vol. 56, 1116-1118. 10.1063/1.102585

Whitehead NJ, GILLIN WP, Bradley IV, Weiss BL and Claxton P (1990). Disorder induced mixing of InGaAs/InP MQW by phosphorus implantation for optical waveguides. Semiconductor Science and Technology  vol. 5, 1063-1066. 10.1088/0268-1242/5/10/009

Homewood KP, GILLIN WP, Pritchard RE, Truscott WS and Singer KE (1990). Thermal processing of GaAsSb/GaAs low dimensional strained layer structures. Superlattices and Microstructures  vol. 7, 359-361. 10.1016/0749-6036(90)90226-W

Whitehead NJ, Gillin WP, Bradley IV, Weiss BL and Claxton P (1990). Erratum: Disorder-induced mixing of InGaAs/InP multiple quantum wells by phosphorus implantation for optical wave-guides (Semiconductor Science and Technology (1990) 5 (1063-1066). Semiconductor Science and Technology  vol. 5, (11) 10.1088/0268-1242/5/11/515

1989

tang YS, heasman KC, GILLIN WP and Sealy BJ (1989). Characteristics of rare earth element erbium implanted in silicon. Applied Physics Letters  vol. 55, 432-433. 10.1063/1.101888

Whitehead NJ, GILLIN WP and Sealy BJ (1989). The effects of air-semiconductor depletion on Hall effect profiling of ion implanted semiconductors. Solid State Electronics  vol. 32, 1045-1047. 10.1016/0038-1101(89)90170-6

Whitehead NJ, Gwilliam RM, GILLIN WP and Sealy BJ (1989). The use of Hall effect profiling to monitor the reactivation of silicon implants after oxygen implants in GaAs. Vacuum  vol. 39, 1149-1151. 10.1016/0042-207X(89)91110-X

Tang ACT, Gardner SR, Sealy BJ and GILLIN WP (1989). Abrupt p+ layers in GaAs by 200?C Hg implantation. Electronics Letters  vol. 25, 1618-1619. 10.1049/el:19891084

TBC

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