Frequency resolved photoluminescence (PL), delayed fluorescence and triplet-triplet annihilation in π-conjugated polymers

被引：0
|
作者：
Partee, J [1 ]
Frankevich, EL [1 ]
Uhlhorn, B [1 ]
Shinar, J [1 ]
Ding, Y [1 ]
Barton, TJ [1 ]
机构：
[1] US DOE, Ames Lab, Ames, IA 50011 USA
来源：
ORGANIC NONLINEAR OPTICAL MATERIALS AND DEVICES | 1999年 / 561卷
关键词：
D O I：
10.1557/PROC-561-215
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The delayed fluorescence of poly(p-phenylene vinylene) (PPV) and poly(p-phenylene ethynylene) (PPE) derivative solids and frozen solutions at 20 K is described. It provides strong evidence for triplet-triplet annihilation to singlets excitons accounting for up to similar to 3% of the total emission in PPV films and similar to 1.5% in PPE powder. It also yields triplet lifetimes of 70 and 110 mu s in PPV films and frozen solutions, and similar to 200 and similar to 500 mu s in PPE powder and frozen solutions, respectively.
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收藏
页码：215 / 220
页数：6
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