Dithienopicenocarbazole-Based Acceptors for Efficient Organic Solar Cells with Optoelectronic Response Over 1000 nm and an Extremely Low Energy Loss

Zhaoyang Yao; Xunfan Liao; Ke Gao; Francis Lin; Xiaobao Xu; Xueliang Shi; Lijian Zuo; Feng Liu; Yiwang Chen; Alex K-Y Jen

doi:10.1021/jacs.7b13239

Dithienopicenocarbazole-Based Acceptors for Efficient Organic Solar Cells with Optoelectronic Response Over 1000 nm and an Extremely Low Energy Loss

J Am Chem Soc. 2018 Feb 14;140(6):2054-2057. doi: 10.1021/jacs.7b13239. Epub 2018 Feb 5.

Authors

Zhaoyang Yao¹, Xunfan Liao^{1

2}, Ke Gao¹, Francis Lin³, Xiaobao Xu¹, Xueliang Shi¹, Lijian Zuo¹, Feng Liu⁴, Yiwang Chen², Alex K-Y Jen^{1

3

5}

Affiliations

¹ Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195-2120, United States.
² Institute of Polymers, Department of Chemistry, Nanchang University , Nanchang 330031, China.
³ Department of Chemistry, University of Washington , Seattle, Washington 98195, United States.
⁴ Department of Physics and Astronomy, Shanghai Jiaotong University , Shanghai 200240, China.
⁵ Department of Chemistry, City University of Hong Kong , Kowloon 999077, Hong Kong.

PMID: 29377679
DOI: 10.1021/jacs.7b13239

Abstract

Two cheliform non-fullerene acceptors, DTPC-IC and DTPC-DFIC, based on a highly electron-rich core, dithienopicenocarbazole (DTPC), are synthesized, showing ultra-narrow bandgaps (as low as 1.21 eV). The two-dimensional nitrogen-containing conjugated DTPC possesses strong electron-donating capability, which induces intense intramolecular charge transfer and intermolecular π-π stacking in derived acceptors. The solar cell based on DTPC-DFIC and a spectrally complementary polymer donor, PTB7-Th, showed a high power conversion efficiency of 10.21% and an extremely low energy loss of 0.45 eV, which is the lowest among reported efficient OSCs.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.