Morphology of MDMO-PPV: PCBM bulk hetero-junction organic solar cells studied by AFM, KFM and TEM

被引：13

作者：

Martens, T ^{[1
]}

Beelen, Z ^{[1
]}

D'Haen, J ^{[1
]}

Munters, T ^{[1
]}

Goris, L ^{[1
]}

Manca, J ^{[1
]}

D'Olieslaeger, M ^{[1
]}

Vanderzande, D ^{[1
]}

De Schepper, L ^{[1
]}

Andriessen, R ^{[1
]}

机构：

[1] Limburgs Univ Ctr, IMO, B-3590 Diepenbeek, Belgium

来源：

ORGANIC PHOTOVOLTAICS III | 2003年 / 4801卷

关键词：

morphology; hetero-junction; organic solar cell; PCBM; MDMO-PPV; AFM; TEM; KFM;

D O I：

10.1117/12.452453

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The microstructure of MDMO-PPV:PCBM blends as used in bulk hetero-junction organic solar cells was studied by Atomic Force Microscopy (AFM) and Kelvin Force Microscopy (KFM) to image the surface morphology and by means of Transmission Electron Microscopy (TEM) to reveal images of the film's interior. By introducing KFM, it was possible to demonstrate that phase separated domains have different local electrical properties than the surrounding matrix. Since blend morphology clearly influences global electrical properties and photovoltaic performance, an attempt to control the morphology by means of casting conditions was undertaken. By using AFM, it has been proven that not only the choice of solvent, but also drying conditions dramatically influence the blend structure. Therefore, the possibility of discovering the blend morphology by AFM, KFM and TEM makes them powerful tools for understanding today's organic photovoltaic performances and for screening new sets of materials.

引用

页码：40 / 47

页数：8

共 16 条

[1] Photovoltaic performance and morphology of polyfluorene blends: A combined microscopic and photovoltaic investigation [J].