Characteristics of an electropolymerized PPV and its light-emitting diode

被引：32

作者：

Chang, WP ^{[1
]}

Whang, WT ^{[1
]}

Lin, PW ^{[1
]}

机构：

[1] NATL CHIAO TUNG UNIV,INST MAT SCI & ENGN,HSINCHU 30049,TAIWAN

来源：

POLYMER | 1996年 / 37卷 / 09期

关键词：

electropolymerization; poly(p-phenylene vinylene); electroluminescence; POLYIMIDE INTERFACE; SPECTROSCOPY;

D O I：

10.1016/0032-3861(96)83698-6

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Poly(phenylene vinylene) (PPV) has been prepared successfully from p-xylylenebis(triphenylphosphonium bromide) in acetonitrile solution via an electroreduction polymerization. p-Xylylenebis(triphenylphosphonium bromide) also acted as an electrolyte in the solution. The resultant electropolymerized PPV film was transparent and dense, and had considerable adhesion to an indium-tin oxide (ITO) electrode. The electropolymerized PPV showed a blue shift both in the ultraviolet-visible absorption spectrum and photoluminescence, compared with the PPV prepared from a p-xylylenebis(tetrahydrothiophenium chloride) precursor route, indicating that it has a shorter pi-conjugated chain length. The infra-red absorption spectra showed a stable P-C bond on the electropolymerized PPV chain. The Al/electropolymerized PPV/ITO light-emitting diode emitted green light with an emission maximum at 530 nm. Annealing the electroluminescence device in a high vacuum oven at 160 degrees C for 3 h significantly enhanced the electroluminescence performance as a result of improvement of the interfacial contact between PPV and the Al metal electrode. Copyright (C) 1996 Elsevier Science Ltd.

引用

页码：1513 / 1518

页数：6