中文摘要：

有机太阳能电池作为一种新兴的有着巨大潜力的光电转换器件，吸引了越来越多的关注。综述了有机薄膜太阳能电池主要的两种器件结构的研究进展，即基于无机异质结发展出来的双异质结型有机太阳能电池和基于扩展双层异质结活性层受限的接触面积而提出的体异质结型太阳能电池；阐述了这两种器件结构的工作原理、影响有机太阳能电池光电转换效率的因素以及两种结构的不足之处，并展望了有机太阳能电池发展的广阔前景。

英文摘要：

Organic solar cells, as a kind of new optoelectronic devices with high potential, have attracted much attention. Two common device structures of organic thin film solar cells, double heterojunction and bulk heterojunction are reviewed. The double heterojunetion structure is developed based on inorganic heterojunetion solar cell, while the bulk heterojunction is based on the expanding the contact area of p-n junctions in the double heterojunction structure. In addition, the working principles of these two kinds of structures are also introduced, as well as various effects on the optoelectronic conversion efficiency of organic solar cells and the shortcoming of these structures. Broad prospects of organic solar cell are finally given.