Electroluminescence and optical properties of poly(phenylenevinylene)/J-aggregate composites

被引:39
作者
Scheblykin, IG
Lepnev, LS
Vitukhnovsky, AG
Van der Auweraer, M
机构
[1] Katholieke Univ Leuven, Lab Mol Dynam & Spect, B-3001 Heverlee, Belgium
[2] RAS, PN Lebedev Phys Inst, Moscow 119991, Russia
[3] PN Lebedev Res Ctr Phys, Moscow 119991, Russia
基金
俄罗斯基础研究基金会;
关键词
exciton dissociation; exciton diffusion; J-aggregates; black spots;
D O I
10.1016/S0022-2313(01)00337-4
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A composite material of poly(phenylenevinylene) (PPV) doped by dye aggregates was prepared. A very efficient and temperature activated energy transfer (ET) from the PPV to the dye aggregates was attributed to Forster ET accompanied by exciton diffusion. A clear complementary relation between the photoluminescence (PL) and electroluminscence (EL) images was observed for thin (15 nm) PPV-based OLEDs. So-called "black spots" in EL become bright ones when the photoluminescence of the same area was excited. This effect was attributed to the presence of an insulating layer between the polymer and aluminium. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:461 / 464
页数:4
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