DOPING EFFECT OF BUCKMINSTERFULLERENE IN CONDUCTING POLYMER - CHANGE OF ABSORPTION-SPECTRUM AND QUENCHING OF LUMINESCENCE

被引:465
作者
MORITA, S [1 ]
ZAKHIDOV, AA [1 ]
YOSHINO, K [1 ]
机构
[1] ACAD SCI UZSSR,DEPT THERMOPHYS,TASHKENT,UZBEKISTAN,USSR
关键词
D O I
10.1016/0038-1098(92)90636-N
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Buckminsterfullerene(C60) is found to be an effective dopant for poly(3-alkylthiophene). Inter-band absorption of poly(3-alkylthiophene) has been remarkably suppressed and blue shifted and new absorption peak evolve in the low energy range upon doping by C60. From a consideration of the energy diagrams, the electron transfer from poly(3-alkylthiophene) to C60 is proposed to be favorable in energy at account of Jahn-Teller splitting of LUMO in C60(-1) state or/and the Coulomb attraction of positively charged polaron P+ to C60(-1). The suppression of photoluminescence(PL) in poly(3-alkylthiophene) upon doping by Buckminsterfullerene has also been observed confirming the doping effect. The nonradiative decay of excitons due to interaction with P+ introduced by doping is discussed as the origin of such PL quenching.
引用
收藏
页码:249 / 252
页数:4
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