Disorder-induced relaxation of Frenkel excitons in molecular aggregates

被引：5
|
作者：
Bednarz, M
Lemaistre, JP
机构：
[1] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland
[2] Univ Paris 06, CNRS, UMR 7603, Lab Milieux Desordonnes & Heterogenes, F-75252 Paris 05, France
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2001年 / 15卷 / 28-30期
关键词：
D O I：
10.1142/S0217979201008603
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A model, based on the intraband scattering of excitons in one-dimensional J-aggregates is proposed to describe the lengthening of the experimentally observed radiative lifetime with temperature. According to this mechanism, the exciton-phonon scattering transfers the oscillator strength from the lowest k congruent to 0 optically allowed state to the other states within the excitonic band. A Pauli master equation, in which the hopping rates are calculated, is used to describe the thermalization of the excitonic band. Assuming a fast relaxation mechanism, the temperature dependence of the exciton radiative lifetime is simulated for various chain lengths.
引用
收藏
页码：3761 / 3764
页数：4
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