Preparation and optical properties of aligned β-phase polyfluorene thin films

被引：12

作者：

Endo, Toshiyuki ^{[1
]}

Kobayashi, Takashi ^{[1
]}

Nagase, Takashi ^{[1
]}

Naito, Hiroyoshi ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Dept Phys & Elect, Sakai, Osaka 5998531, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2007年 / 46卷 / 45-49期

关键词：

poly(9,9-dioctylfluorene) (F8); beta phase; polarized absorption; polarized photoluminescence; photoluminescence quantum efficiency;

D O I：

10.1143/JJAP.46.L1093

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Aligned beta-phase poly(9,9-dioctylfluorene) (H) thin films have been prepared and their optical properties have been examined. Aligned beta-phase F8 thin films are obtained by exposing aligned crystalline F8 thin films to toluene vapor. The polarization ratio in photoluminescence (PL) of the aligned beta-phase F8 thin films is 30, which is almost the same as that of the aligned crystalline F8 thin films, while PL quantum efficiency of the aligned P-phase F8 thin films is much higher than that of the aligned crystalline F8 thin films. These results suggest that high performance is expected in polarized organic light-emitting diodes based on the aligned beta-phase F8 thin film.

引用

页码：L1093 / L1095

页数：3

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