High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor

Jia, Zhenrong; Qin, Shucheng; Meng, Lei; Ma, Qing; Angunawela, Indunil; Zhang, Jinyuan; Li, Xiaojun; He, Yakun; Lai, Wenbin; Li, Ning; Ade, Harald; Brabec, Christoph J.; Li, Yongfang

doi:10.1038/s41467-020-20431-6

High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor

Journal Article · Fri Jan 08 00:00:00 EST 2021 · Nature Communications

DOI:https://doi.org/10.1038/s41467-020-20431-6· OSTI ID:1817063

Jia, Zhenrong ^[1]; Qin, Shucheng ^[2]; ^[2]; Ma, Qing ^[2]; Angunawela, Indunil ^[3]; Zhang, Jinyuan ^[4]; Li, Xiaojun ^[2]; He, Yakun ^[5]; Lai, Wenbin ^[2]; ^[6]; ^[7]; ^[8]; ^[9]

Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Chemistry. CAS Key Lab. of Organic Solids. Beijing National Lab. for Molecular Sciences; Chinese Academy of Sciences (CAS), Beijing (China). School of Chemical Science; OSTI
Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Chemistry. CAS Key Lab. of Organic Solids. Beijing National Lab. for Molecular Sciences; Chinese Academy of Sciences (CAS), Beijing (China). School of Chemical Science
North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics. Organic and Carbon Electronics Laboratories (ORaCEL)
Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Chemistry. CAS Key Lab. of Organic Solids. Beijing National Lab. for Molecular Sciences
Friedrich-Alexander Univ. Erlangen-Nürnberg (Germany). Dept. of Materials Science and Engineering. Inst. of Materials for Electronics and Energy Technology (i-MEET); Erlangen Graduate School in Advanced Optical Technologies (SAOT), Erlangen (Germany)
Friedrich-Alexander Univ. Erlangen-Nürnberg (Germany). Dept. of Materials Science and Engineering. Inst. of Materials for Electronics and Energy Technology (i-MEET); Helmholtz-Inst. Erlangen-Nürnberg for Renewable Energy (HI ERN), Erlangen (Germany)
North Carolina State Univ., Raleigh, NC (United States). Dept. of Physics. Organic and Carbon Electronics Laboratories (ORaCEL)
Friedrich-Alexander Univ. Erlangen-Nürnberg (Germany). Dept. of Materials Science and Engineering. Inst. of Materials for Electronics and Energy Technology (i-MEET); Helmholtz-Inst. Erlangen-Nürnberg for Renewable Energy (HI ERN), Erlangen (Germany)
Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Chemistry. CAS Key Lab. of Organic Solids. Beijing National Lab. for Molecular Sciences; Chinese Academy of Sciences (CAS), Beijing (China). School of Chemical Science; Soochow Univ., Taipai (Taiwan). College of Chemistry, Chemical Engineering and Materials Science. Lab. of Advanced Optoelectronic Materials

Tandem organic solar cells are based on the device structure monolithically connecting two solar cells to broaden overall absorption spectrum and utilize the photon energy more efficiently. Herein, we demonstrate a simple strategy of inserting a double bond between the central core and end groups of the small molecule acceptor Y6 to extend its conjugation length and absorption range. As a result, a new narrow bandgap acceptor BTPV-4F was synthesized with an optical bandgap of 1.21 eV. The single-junction devices based on BTPV-4F as acceptor achieved a power conversion efficiency of over 13.4% with a high short-circuit current density of 28.9 mA cm^-2. With adopting BTPV-4F as the rear cell acceptor material, the resulting tandem devices reached a high power conversion efficiency of over 16.4% with good photostability. The results indicate that BTPV-4F is an efficient infrared-absorbing narrow bandgap acceptor and has great potential to be applied into tandem organic solar cells.

View Accepted Manuscript (DOE)

Sponsoring Organization:: Guangdong Major Project of Basic and Applied Basic Research; National Key R&D Program of China; National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1817063

Journal Information:: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 12; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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