High-efficiency inverted solar cells based on a low bandgap polymer with excellent air stability

作者：Chu Ta Ya; Tsang Sai Wing; Zhou Jiayun; Verly Pierre G; Lu Jianping^*; Beaupre Serge; Leclerc Mario; Tao Ye

来源：Solar Energy Materials and Solar Cells, 2012, 96(1): 155-159.

DOI：10.1016/j.solmat.2011.09.042

• Inverted organic solar cells
• Alternating dithienosilole and thienopyrrole-4,6-dione copolymer
• ZnO nanocrystals
• Processing additives
• Air stability

A high-efficiency inverted bulk heterojunction (BHJ) solar cell with good air stability is fabricated using annealing-free ZnO nanocrystals as an electron-transport layer and a blend of a low bandgap polymer PDTSTPD and PC(71)BM as an active layer. A power conversion efficiency as high as 6.7% has been achieved on the inverted devices with an active area of 1.0 cm(2) using nitrobenzene as a processing additive. The device is highly stable, retaining 85% of its original efficiency after being stored in air for 32 days even without encapsulation.

• 出版日期2012-1