Organic Thin Film Solar Cells

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 heterojunction structure is developed based on inorganic heterojunction 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.