Effect of alkyl and aromatic substituents on blue electroluminescence in polyacetylene derivatives

被引：37

作者：

Hirohata, M ^{[1
]}

Tada, K ^{[1
]}

Hidayat, R ^{[1
]}

Masuda, T ^{[1
]}

Yoshino, K ^{[1
]}

机构：

[1] KYOTO UNIV,FAC ENGN,DIV POLYMER CHEM,KYOTO 60601,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1997年 / 36卷 / 3A期

关键词：

conducting polymer; polyacetylene derivative; photoluminescence; electroluminescence; light-emitting diode;

D O I：

10.1143/JJAP.36.L302

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Substituent dependences of electroluminescence (EL) and photoluminescence (PL) in disubstituted polyacetylene derivatives such as poly(1-methyl-2-phenylacetylene) (PMePA), poly(1-ethyl-2-phenylacetylene) (PEtPA), poly(1-n-hexyl-2-phenylacetylene) (PHxPA) and poly(1-methyl-2-naphthylacetylene) (PMeNA) have been studied. Blue light emission was observed from EL devices utilizing PEtPA and PHxPA; and blue-green light emission was observed from those utilizing PMePA and PMeNA. EL intensity, relative EL efficiency and PL intensity increase by one or two orders of magnitude on increasing the alkyl chain length. EL intensity, EL efficiency and PL intensity of PMeNA are higher than those of PMePA. The results are discussed in terms of substituent-dependent interchain interaction and electronic energy states.

引用

页码：L302 / L305

页数：4