Modification of polymer light emission by lateral microstructure

被引：15
作者：
Safonov, AN
Jory, M
Matterson, BJ
Lupton, JM
Salt, MG
Wasey, JAE
Barnes, WL
Samuel, IDW
机构：
[1] Univ Durham, Dept Phys, Durham DH1 3LE, England
[2] Univ Exeter, Sch Phys, Thin Film Photon Grp, Exeter EX4 4QL, Devon, England
来源：
SYNTHETIC METALS | 2001年 / 116卷 / 1-3期
基金：
英国工程与自然科学研究理事会;
关键词：
light sources; polymer LED; photoluminescence; quantum optics; waveguides;
D O I：
10.1016/S0379-6779(00)00474-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report the use of wavelength-scale microstructure to control the intensity, spectrum and polarisation of light-emission from thin polymer films. It is shown that periodic corrugation of the emissive layer can substantially increase the efficiency of light-emission. Detailed photoluminescence (PL) studies of the angle dependence of the emission together with theoretical modelling show that the observed emission enhancement is associated with Bragg-scattering of waveguided light out of the polymer layer. The application of this approach to increase the efficiency of a light-emitting diode (LED) is demonstrated. (C) 2001 Published by Elsevier Science B.V.
引用
收藏
页码：145 / 148
页数：4
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