Blue electroluminescence of substituted polyacetylenes

被引:29
作者
Sun, RG [1 ]
Masuda, T [1 ]
Kobayashi, T [1 ]
机构
[1] KYOTO UNIV, DEPT POLYMER CHEM, KYOTO 60601, JAPAN
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1996年 / 35卷 / 12B期
关键词
blue emission; electroluminescent device; polyacetylene derivative; disubstituted polyacetylene; oxadiazole derivative;
D O I
10.1143/JJAP.35.L1673
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report blue emission from a series of alkyl and phenyl disubstituted polyacetylenes, i.e., poly(1-phenyl-1-alkynes) (PPhAs), with alkyne being n-propyne, n-butyne, and n-octyne. Blue electroluminescence from PPhAs is observed by employing a cell with an ITO (indium-tin oxide) coated glass substrate/PPhA/Mg/Al structure. The color of luminescence is changed from blue-green to pure blue and the luminescence intensity is enhanced when the length of alkyl side chain increases, while neither an alkyl nor a phenyl monosubstituted polyacetylene shows an intense luminescence. The electroluminescence efficiency of PPhAs is not efficiently improved by doping with a common electron-transporting material 2-(4-biphenylyl)-5-(4-t-butylphenyl)-1,3,4-oxadiazole (PBD).
引用
收藏
页码:L1673 / L1676
页数:4
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