Nonradiative relaxation processes in molecular crystals

被引:3
|
作者
Hultell, M. [1 ]
Stafstrom, S. [1 ]
机构
[1] Linkoping Univ, Dept Phys Chem & Biol, S-58183 Linkoping, Sweden
关键词
Internal conversion; Frenkel excitons; Interstate transitions; Pentacene single crystal;
D O I
10.1016/j.jlumin.2008.07.001
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Internal conversion is the dominant relaxation channel from higher lying excited states in molecular crystals and involves the transfer of energy from the electronic system to the lattice. In this work, we present results from simulations of the nonradiative relaxation process with an emphasis on both intraand interband transitions. We find the internal conversion process to be strongly nonadiabatic and the associated relaxation time in the case of large energy excitations to be limited by the transitions made between states of different bands. (C) 2008 Elsevier B.V. All rights reserved.
引用
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页码:2019 / 2026
页数:8
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