C R Belton et al 2008 J. Phys. D: Appl. Phys. 41 094006 doi:10.1088/0022-3727/41/9/094006
C R Belton1, G Itskos2, G Heliotis1, P N Stavrinou1, P G Lagoudakis3, J Lupton3, S Pereira4, E Gu5, C Griffin5, B Guilhabert5, I M Watson5, A R Mackintosh6, R A Pethrick6, J Feldmann3, R Murray1, M D Dawson5 and D D C Bradley1
Show affiliationsWe present the highlights of a research programme on hybrid inorganic–organic light emitters. These devices combine recent developments in III–V nitride technology (including UV emitting micro-arrays and specifically tailored quantum wells) with conjugated polymers to access the entire visible spectrum. Two types of devices are studied, those based on down conversion of the quantum well emission by radiative transfer and those based on non-radiative resonant energy transfer. The spectral and operating characteristics of the devices are described in detail. Selectable colour micro-arrays and bar emitters are demonstrated. The nature of the non-radiative energy transfer process has also been studied and we find transfer efficiencies of up to 43% at 15 K, with a 1/R2 dependence on the distance between quantum well and polymer layer, suggesting a plane–plane interaction. The relative importance of the non-radiative resonant energy transfer process increases with temperature to be up to 20 times more efficient, at 300 K, than the radiative transfer process.
85.60.Jb Light-emitting devices
85.60.Bt Optoelectronic device characterization, design, and modeling
Issue 9 (7 May 2008)
Received 23 October 2007, in final form 17 December 2007
Published 4 April 2008
C R Belton et al 2008 J. Phys. D: Appl. Phys. 41 094006
B Guilhabert et al 2008 J. Phys. D: Appl. Phys. 41 094008
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