Research Actuality in Mechanism of Low-energy Gap Emission and Emitting Stability of Polyfluorenes

Zhi-yuan CHEN; Wei-bin BAI; Cai-mao ZHAN

doi:10.14028/j.cnki.1003-3726.2007.08.003

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Research Actuality in Mechanism of Low-energy Gap Emission and Emitting Stability of Polyfluorenes

更新时间：2022-09-18

- Research Actuality in Mechanism of Low-energy Gap Emission and Emitting Stability of Polyfluorenes
- Polymer Bulletin Vol. 20, Issue 8, Pages: 11-17(2007)
- 作者机构：
  
  武汉大学化学与分子科学学院，武汉　430072
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2007.08.003
  CLC：
- Published：2007-08，
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Zhi-yuan CHEN, Wei-bin BAI, Cai-mao ZHAN. Research Actuality in Mechanism of Low-energy Gap Emission and Emitting Stability of Polyfluorenes. [J]. Polymer Bulletin 20(8):11-17(2007)
DOI：

Zhi-yuan CHEN, Wei-bin BAI, Cai-mao ZHAN. Research Actuality in Mechanism of Low-energy Gap Emission and Emitting Stability of Polyfluorenes. [J]. Polymer Bulletin 20(8):11-17(2007) DOI： 10.14028/j.cnki.1003-3726.2007.08.003.

摘要

聚芴是一类重要的蓝光发射材料，有高亮度、高效率等优点；然而聚芴类材料在发光器件中使用一段时间之后，光致发光光谱在530~550nm、电致发光光谱在2.2~2.3eV 的区域出现新的发射带，使得器件的发射变成绿光或蓝绿光，在色度失纯的同时，器件的发光效率也迅速降低。本文概述了目前提出的有关聚芴材料低能级发射形成的原因的假说、试验依据、理论计算、以及基于假说所提出的消除低能级发射、改善材料发射稳定性的方法等研究现状。

Abstract

Polyfluorenes are promising blue light emitting materials for their high efficiency and bright as emitting layer in polymeric light emitting devices (PLEDs). But blue-green or green light emitting with the maxima around530 ~550nm in PL and2.2~2.3eV in EL have been observed in the solid state film and PLED after an experimental run. The progress in recent years in the exploring mechanism of the low-energy gap emission

including the experimental evidences

theoretical calculations

and the methods to improve the blue light emitting stability

were reviewed in this article.

关键词

聚芴材料低能级发射稳定性机理

Keywords

Low-energy Gap EmissionPolyfluorenesMechanismStability

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