Self-dopant formation in poly(9,9-di-n-octylfluorene) via a dipping method for efficient and stable pure-blue electrolumineseence
Self-dopant formation in poly(9,9-di-n-octylfluorene) via a dipping method for efficient and stable pure-blue electrolumineseence
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DOI：
10.1002/adma.200602632
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发表时间：
2007-09-17
影响因子：
29.4
通讯作者：
Chen, Show-An
中科院分区：
文献类型：
--
作者：
Lu, Hsin-Hung;Liu, Ching-Yang;Chen, Show-An
将原始聚（9，9-二正辛基芴）膜浸入混合溶剂/非溶剂THF/MeOH中，将次要无定形相链的构象转化为含量可控的β相构象（见图）。P相充当掺杂剂并引起电子俘获和促进空穴迁移率。它允许有效的能量转移和电荷捕获，从而实现纯蓝色电致发光和增强的器件性能。
Dipping pristine poly(9,9-di-n-octylfluorene) film into a mixed solvent/nonsolvent THF/MeOH transforms the conformation of minor amorphous-phase chains to beta-phase conformers (see figure) with a controllable content. The P phase acts as a dopant and causes electron trapping and promoted hole mobility. It allows efficient energy transfer and charge trapping and thus achieves pure-blue electroluminescence and enhanced device performance.