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

Li Nian; Ke Gao; Feng Liu; Yuanyuan Kan; Xiaofang Jiang; Linlin Liu; Zengqi Xie; Xiaobin Peng; Thomas P Russell; Yuguang Ma

doi:10.1002/adma.201602834

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

Adv Mater. 2016 Oct;28(37):8184-8190. doi: 10.1002/adma.201602834. Epub 2016 Jul 14.

Authors

Li Nian¹, Ke Gao¹, Feng Liu^{2

3}, Yuanyuan Kan¹, Xiaofang Jiang¹, Linlin Liu¹, Zengqi Xie⁴, Xiaobin Peng⁵, Thomas P Russell^{6

7}, Yuguang Ma¹

Affiliations

¹ Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China.
² Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China.
³ Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.
⁴ Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China. msxiez@scut.edu.cn.
⁵ Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China. chxbpeng@scut.edu.cn.
⁶ Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA. russell@mail.pse.umass.edu.
⁷ Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA, 01003, USA. russell@mail.pse.umass.edu.

PMID: 27414963
DOI: 10.1002/adma.201602834

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.

Keywords: composition tolerance; high efficiency; near-IR sensitization; photoconductive cathode interlayers; ternary organic solar cells.