11% Efficient Ternary Organic Solar Cells with High Composition Tolerance via Integrated Near-IR Sensitization and Interface Engineering.

Nian, Li; Gao, Ke; Liu, Feng; Kan, Yuanyuan; Jiang, Xiaofang; Liu, Linlin; Xie, Zengqi; Peng, Xiaobin et al. · Adv Mater · 2016

basic_science · Level V

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Abstract

Highly efficient electron extraction is achieved by using a photoconductive cathode interlayer in inverted ternary organic solar cells (OSCs) where a near-IR absorbing porphyrin molecule is used as the sensitizer. The OSCs show improved device performance when the ratio of the two donors varies in a large region and a maximum power conversion efficiency up to 11.03% is demonstrated.