Chemistry An Asian Journal 2014-04-01

Thieno[3,4-c]pyrrole-4,6-dione-based small molecules for highly efficient solution-processed organic solar cells.

Jong-jin Ha, Yu Jin Kim, Jong-gwang Park, Tae Kyu An, Soon-Ki Kwon, Chan Eon Park, Yun-Hi Kim

文献索引：Chem. Asian J. 9(4) , 1045-1053, (2014)

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摘要

Two small molecules named BT-TPD and TBDT-TTPD with a thieno[3,4-c]pyrrole-4,6-dione (TPD) unit were designed and synthesized for solution-processed bulk-heterojunction solar cells. Their thermal, electrochemical, optical, charge-transport, and photovoltaic characteristics were investigated. These compounds exhibit strong absorption at 460-560 nm and low highest occupied molecular orbital levels (-5.36 eV). Field-effect hole mobilities of these compounds are 1.7-7.7×10(-3) cm(2) V(-1) s(-1). Small-molecule organic solar cells based on blends of these donor molecules and a acceptor display power conversion efficiencies as high as 4.62% under the illumination of AM 1.5G, 100 mW cm(-2).© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.