Thermally stimulated luminescence in π-conjugated polymers containing fluorene and spirobifluorene units

被引：34

作者：

Kadashchuk, A

Vakhnin, A

Skryshevski, Y

Arkhipov, VI

Emelianova, EV

Bässler, H

机构：

[1] IMEC, B-3001 Heverlee, Belgium

[2] Natl Acad Sci Ukraine, Inst Phys, UA-252650 Kiev, Ukraine

[3] Tech Univ Darmstadt, Inst Sci Mat, D-64281 Darmstadt, Germany

[4] Katholieke Univ Leuven, Semicond Phys Lab, B-3001 Heverlee, Belgium

[5] Univ Marburg, Inst Phys Nucl & Macromol Chem, D-35032 Marburg, Germany

[6] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany

来源：

CHEMICAL PHYSICS | 2003年 / 291卷 / 03期

关键词：

D O I：

10.1016/S0301-0104(03)00227-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thermally stimulated luminescence (TSL) is studied experimentally in pi-conjugated polyfluorene (PF) and in a polymer containing polyspirobifluorene (PSBF). A narrow TSL peak, whose maximum is located at 45 K, evidences for a weak energy disorder in PF films. A broader TSL peak, shifted to higher temperatures, indicates stronger intrinsic disorder and, in some cases, occurrence of deep traps in PSBF. The dominant contribution from phosphorescence to the afterglow emission and coexistence of phosphorescence and fluorescence in the TSL signal can be explained by the energy splitting of the singlet and triplet states of geminate pairs in PF and PSBF. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：243 / 250

页数：8

共 30 条

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