Scanning near-field and confocal Raman microscopic investigation of P3HT-PCBM systems for solar cell applications

被引：130

作者：

Klimov, E.

Li, W.

Yang, X.

Hoffmann, G. G.

Loos, J.

机构：

[1] Eindhoven Univ Technol, Lab Mat & Interface Chem, NL-5600 MB Eindhoven, Netherlands

[2] Eindhoven Univ Technol, Dutch Polymer Inst, NL-5600 MB Eindhoven, Netherlands

[3] Fudan Univ, Dept Macromol Sci, Shanghai 200433, Peoples R China

[4] Univ Duisburg Essen, Lab Mol & Polymer Spect, Essen, Germany

来源：

MACROMOLECULES | 2006年 / 39卷 / 13期

关键词：

D O I：

10.1021/ma052590x

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The morphological evolution of thin composite films based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C-61 butyric acid methyl ester (PCBM) upon annealing has been studied by means of transmission electron microscopy (TEM), scanning near-field optical microscopy (SNOM), and confocal Raman microscopy. This system currently is the most promising candidate for high-performance polymer solar cells. TEM bright field and SNOM topography measurements show that segregation and large-scale crystallization of PCBM take place upon thermal annealing. Additional SNOM optical absorbance measurements using laser irradiation sources with two different wavelengths in the visible light range and Raman microscopy are able to detect the component distribution within the thin composite film, which in detail demonstrates high diffusive mobility of PCBM upon annealing.

引用

页码：4493 / 4496

页数：4

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