Delayed fluorescence and triplet-triplet annihilation in π-conjugated polymers

被引：143

作者：

Partee, J ^{[1
]}

Frankevich, EL

Uhlhorn, B

Shinar, J

Ding, Y

Barton, TJ

机构：

[1] Iowa State Univ Sci & Technol, Ames Lab, US DOE, Ames, IA 50011 USA

[2] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA

[3] Iowa State Univ, Int Inst Theoret & Appl Phys, Ames, IA 50011 USA

[4] Inst Energy Problems Chem Phys, Moscow 334, Russia

[5] Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.82.3673

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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. [S0031-9007(99)09010-9].

引用

页码：3673 / 3676

页数：4

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