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Nonfullerene Acceptor for Organic Solar Cells with Chlorination on Dithieno[3,2-b:2′,3′-d]pyrrol Fused-Ring AITranslate

Renyong Geng; Xin Song; Haohao Feng; Jiangsheng Yu; Ming Zhang; Nicola Gasparini; Zhuohan Zhang; Feng Liu; Derya Baran; Weihua Tang;
Nanjing University of Science and Technology; King Abdullah University of Science and Technology (KAUST); Nanjing University of Science and Technology; Nanjing University of Science and Technology; Shanghai Jiao Tong University; King Abdullah University of Science and Technology (KAUST); Nanjing University of Science and Technology; Shanghai Jiao Tong University; King Abdullah University of Science and Technology (KAUST); Nanjing University of Science and Technology
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Publisher: ACS
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Abstract AITranslate

A narrow-band-gap molecular acceptor, IPIC-4Cl, featuring an indacenobis(dithieno[3,2-b:2′,3′-d]pyrrol) (INP) core with 2-butyl-1-octyl side chains and chlorinated (dicyanomethylidene)-indan-1-one (IC) as electron-accepting end group, has been rationally designed as nonfullerene acceptors (NFAs) for organic solar cells (OSCs). The impact of chlorination on the acceptor unit is revealed by a comparison study with two counterpart NFAs bearing a fluorinated or nonhalogenated IC unit. The synergetic photophysical and morphological analyses reveal that PBDB-T:IPIC-4Cl blend possesses efficient exciton dissociation and charge collection integrated with higher crystallinity and optimized phase separation. Consequently, the OSCs constructed by PBDB-T:IPIC-4Cl obtain a champion power conversion efficiency (PCE) of 13.4% with an extremely low energy loss of 0.51 eV. More encouragingly, we achieve a higher photovoltaic performance of 14.3% for ternary solar cells by combining an optimal amount of PC71BM with PBDB-T:IPIC-4Cl blend.

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DOI：https://doi.org/10.1021/acsenergylett.9b00147

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Citation Information:

A narrow-band-gap molecular acceptor, IPIC-4Cl, featuring an indacenobis(dithieno[3,2-b:2′,3′-d]pyrrol) (INP) core with 2-butyl-1-octyl side chains and chlorinated (dicyanomethylidene)-indan-1-one (IC) as electron-accepting end group, has been rationally designed as nonfullerene acceptors (NFAs) for organic solar cells (OSCs). The impact of chlorination on the acceptor unit is revealed by a comparison study with two counterpart NFAs bearing a fluorinated or nonhalogenated IC unit. The synergetic photophysical and morphological analyses reveal that PBDB-T:IPIC-4Cl blend possesses efficient exciton dissociation and charge collection integrated with higher crystallinity and optimized phase separation. Consequently, the OSCs constructed by PBDB-T:IPIC-4Cl obtain a champion power conversion efficiency (PCE) of 13.4% with an extremely low energy loss of 0.51 eV. More encouragingly, we achieve a higher photovoltaic performance of 14.3% for ternary solar cells by combining an optimal amount of PC71BM with PBDB-T:IPIC-4Cl blend.

quote

GB/T 7714-2015 [1] Renyong Geng, Xin Song, Haohao Feng, et al. ACS Energy Letters, 2019(4). DOI:10.1021/acsenergylett.9b00147.
MLA [1] Renyong Geng, et al., ACS Energy Letters, no. 4, 2019, https://doi.org/10.1021/acsenergylett.9b00147.
APA [1] Renyong Geng, Xin Song, Haohao Feng, Jiangsheng Yu, Ming Zhang, Nicola Gasparini, Zhuohan Zhang, Feng Liu, Derya Baran, & Weihua Tang. (2019). ACS Energy Letters(4). https://doi.org/10.1021/acsenergylett.9b00147
IEEE [1] Renyong Geng, Xin Song, Haohao Feng, Jiangsheng Yu, Ming Zhang, Nicola Gasparini, Zhuohan Zhang, Feng Liu, Derya Baran, and Weihua Tang, ACS Energy Letters, no. 4, 2019, doi: 10.1021/acsenergylett.9b00147.