Dispersive relaxation of photoexcited defects in bipyridine-PPV derivatives measured by photoinduced absorption

被引：3

作者：

Epshtein, O ^{[1
]}

Nakhmanovich, G

Eichen, Y

Ehrenfreund, E

机构：

[1] Technion Israel Inst Technol, Inst Solid State, IL-32000 Haifa, Israel

[2] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[3] Technion Israel Inst Technol, Dept Chem, IL-32000 Haifa, Israel

来源：

SYNTHETIC METALS | 2001年 / 119卷 / 1-3期

关键词：

photomodulation spectroscopy; dispersive relaxation; lifetime distribution; bipyridine-PPV derivatives;

D O I：

10.1016/S0379-6779(00)00631-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have measured the dynamics of the electronic absorptions of the photoinduced defects in bipyridine-PPV derivatives. Their dependence on the laser pump intensity and modulation frequency reveal evolution in time which can be described by "dispersive relaxation" behavior. This behavior can be quantified as a mono-molecular recombination process combined with an asymmetric lifetime distribution.

引用

页码：585 / 586

页数：2

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