Solution-processed small molecules using different electron linkers for high-performance solar cells.

Liu, Yongsheng; Yang, Yang Michael; Chen, Chun-Chao; Chen, Qi; Dou, Letian; Hong, Ziruo; Li, Gang; Yang, Yang · Adv Mater · 2013

basic_science · Level V

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Abstract

Conjugated acceptor-donor-acceptor small molecules using different electron linkers are designed, synthesized, and used in organic solar cells. All of these small molecules show high photoconversion efficiencies (PCEs), ranging from 3.18-6.15% under simulated AM 1.5G condition. A maximum PCE of 6.15% combined with a high Voc of 0.85 V, a Jsc of 10.79 mA cm(-2) and a notable FF of 67.1% are achieved with T3/PC71 BM blend based devices using polydimethylsiloxane as additive.