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Semiconductor Spectroscopy and Devices research group

The Semiconductor Spectroscopy and Devices research group is part of the Nanoscience division of the Department of Physics at the University of Strathclyde. The Department is a member of the Scottish Universities Physics Alliance (SUPA).

News

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PhD and Postdoctoral positions available. 9 October 2012 — Congratulations to Dr. Naresh Kumar for a successful thesis defense. 25 May 2012 — That's two in the same week! Well done to Franziska Luckert for another successful Ph.D. viva. 21 May 2012 — Lethy KJ successfully defends her Ph.D. thesis. Congratulations! 15 May 2012 — EPRSC grant (£481,554) awarded to Dr. Carol Trager-Cowan and Dr. Ben Hourahine for Nanoscale characterisation of nitride semiconductor thin films using EBSD, ECCI, CL and EBIC, in collaboration with colleagues from Strathclyde's Department of Mathematics & Statistics, the Universities of Bath, Nottingham, Oxford and Sheffield, and Imperial College.

9^th International Conference on Nitride Semiconductors was held in Glasgow, 10–15 July 2011. See icns9.org for more details.

Research interests

• semiconductor materials issues, including:-
  • Group III nitrides: AlN, GaN, InN and their alloys Al_xGa_yIn_1-x-yN
  • Materials doped with rare earth ions such as Eu³⁺, Er²⁺ and Tb³⁺
  • Chalcopyrites: Cu(In,Ga)(S,Se)₂
• spatially and spectrally resolved luminescence characterisation, including:-
  • photoluminescence
  • cathodoluminescence
  • electroluminescence
• electron backscatter diffraction and electron channeling contrast imaging
• optical properties of plasmonic nanostructures
• first principles and semi-empirical modelling

Recent publications

• NEW K.J.Lethy, P.R.Edwards, C.Liu, W.N.Wang and R.W.Martin (2012) Cross-sectional and plan-view cathodoluminescence of GaN partially coalesced above a nanocolumn array, Journal of Applied Physics 112 023507 doi:10.1063/1.4737418
• NEW K.J.Lethy, P.R.Edwards, C.Liu, P.A.Shields, D.W.E.Allsopp and R.W.Martin (2012) Cathodoluminescence studies of GaN coalesced from nanopyramids selectively grown by MOVPE, Semiconductor Science and Technology 27 085010 doi:10.1088/0268-1242/27/8/085010
• NEW F.Luckert, M.V.Yakushev, C.Faugeras, A.V.Karotki, A.V.Mudryi and R.W.Martin (2012) Excitation power and temperature dependence of excitons in CuInSe₂, Journal of Applied Physics 111 093507 doi:10.1063/1.4709448
• NEW G. Naresh-Kumar, B. Hourahine, P.R.Edwards, A. P. Day, A. Winkelmann, A. J. Wilkinson, P. J. Parbrook, G. England, and C. Trager-Cowan (2012) Rapid nondestructive analysis of threading dislocations in wurtzite materials using the scanning electron microscope, Physical Review Letters 108 135503 doi:10.1103/PhysRevLett.108.135503
• J.Bruckbauer, P.R.Edwards, T.Wang and R.W.Martin (2011) High resolution cathodoluminescence hyperspectral imaging of surface features in InGaN/GaN multiple quantum well structures, Applied Physics Letters 98 141908 doi:10.1063/1.3575573
• P.R.Edwards, D. Sleith, A. W. Wark and R.W.Martin (2011) Mapping localized surface plasmons within silver nanocubes using cathodoluminescence hyperspectral imaging, Journal of Physical Chemistry C 115 14031–14035 doi:10.1063/1.3575573
• P.R.Edwards and R.W.Martin (2011) Cathodoluminescence nanocharacterization of semiconductors, Semiconductor Science and Technology 26 064005 doi:10.1088/0268-1242/26/6/064005
• F.Luckert, D.I.Hamilton, M.V.Yakushev, N.S.Beattie, G.Zoppi, M.Moynihan, I.Forbes, A.V.Karotki, A.V.Mudryi, M.Grossberg, J.Krustok and R.W.Martin (2011) Optical properties of high quality Cu₂ZnSnSe₄ thin films, Applied Physics Letters 99 062104 doi:10.1063/1.3624827
• V.Kachkanov, I.P.Dolbnya, K.P.O'Donnell, R.W.Martin, P.R.Edwards and S.Pereira (2011) InGaN epilayer characterization by microfocused x-ray reciprocal space mapping, Applied Physics Express 99 181909 doi:10.1063/1.3658619