An organoboron compound with a wide absorption spectrum for solar cell applications

Chemical Communications : Chem Comm
Fangbin LiuLixiang Wang

Abstract

Organoboron compounds offer new approaches to tune the electronic structures of π-conjugated molecules. In this work, an electron acceptor (M-BNBP4P-1) is developed by endcapping an organoboron core unit with two strong electron-withdrawing groups. M-BNBP4P-1 exhibits a unique wide absorption spectrum with two strong absorption bands in the long wavelength region (λmax= 771 nm) and the short wavelength region (λmax= 502 nm), which indicate superior sunlight harvesting capability. This is due to its special electronic structure, i.e. a delocalized LUMO and a localized HOMO. Prototype solution-processed organic solar cells based on M-BNBP4P-1 show a power conversion efficiency of 7.06% and a wide photoresponse from 350 nm to 880 nm.

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Citations

Jun 17, 2018·Chemistry : a European Journal·Tao WangLixiang Wang
Aug 17, 2020·Chemistry, an Asian Journal·Fangbin LiuLixiang Wang
Oct 5, 2018·Frontiers in Chemistry·Zhenzhen ZhangYingping Zou
Aug 29, 2019·Chemical Communications : Chem Comm·Matthew M MorganBenjamin S Gelfand
Dec 15, 2017·Chemical Communications : Chem Comm·Junhui MiaoLixiang Wang
Jan 27, 2022·Dalton Transactions : an International Journal of Inorganic Chemistry·Sisi WangZhen Shen

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Methods Mentioned

BETA
differential
X-ray
atomic force microscopy

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