Picoseconds time resolved photoinduced absorption by infrared active vibrations as a probe for charge photogeneration in MEH-PPV/C60 composites

被引：32

作者：

Mizrahi, U ^{[1
]}

Shtrichman, I

Gershoni, D

Ehrenfreund, E

Vardeny, ZV

机构：

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

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

[3] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA

来源：

SYNTHETIC METALS | 1999年 / 102卷 / 1-3期

关键词：

picosecond time resolved IR spectroscopy; photoinduced absorption; PPV and derivatives;

D O I：

10.1016/S0379-6779(98)00316-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have applied a visible pump mid-infrared probe picosecond time resolved technique, in order to study the photogeneration of charges in MEH-PPV/C-60 composites. The photoinduced infrared active vibrations on the polymer chains have been used as a direct measure for the photogenerated charges. We have found that, within our time resolution of similar or equal to 60 ps, polarons ate photogenerated on the MEH-PPV chains with a quantum yield of the order of 5%.

引用

页码：1182 / 1185

页数：4

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