Realizing Small Energy Loss of 0.55 eV, High Open-Circuit Voltage >1 V and High Efficiency >10% in Fullerene-Free Polymer Solar Cells via Energy Driver.

Cheng, Pei; Zhang, Mingyu; Lau, Tsz-Ki; Wu, Yao; Jia, Boyu; Wang, Jiayu; Yan, Cenqi; Qin, Meng et al. · Adv Mater · 2017

basic_science · Level V

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Abstract

A new, easy, and efficient approach is reported to enhance the driving force for charge transfer, break tradeoff between open-circuit voltage and short-circuit current, and simultaneously achieve very small energy loss (0.55 eV), very high open-circuit voltage (>1 V), and very high efficiency (>10%) in fullerene-free organic solar cells via an energy driver.