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Title: Surpassing the 10% efficiency milestone for 1-cm2 all-polymer solar cells

Abstract

Naphthalenediimide-based n-type polymeric semiconductors are extensively used for constructing high-performance all-polymer solar cells (all-PSCs). For such all-polymer systems, charge recombination can be reduced by using thinner active layers, yet suffering insufficient near-infrared light harvesting from the polymeric acceptor. Conversely, increasing the layer thickness overcomes the light harvesting issue, but at the cost of severe charge recombination effects. Here we demonstrate that to manage light propagation within all-PSCs, a thick bulk-heterojunction film of approximately 350 nm is needed to effectively enhance photo-harvesting in the near-infrared region. To overcome the severe charge recombination in such a thick film, a non-halogenic additive is used to induce a well-ordered micro-structure that inherently suppresses recombination loss. The combined strategies of light management and delicate morphology optimization lead to a promising efficiency over 10% for thick-film all-PSCs with active area of 1 cm2, showing great promise for future large-scale production and application of all-PSCs.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]; ORCiD logo [1]; ORCiD logo [3];  [1];  [4]; ORCiD logo [1];  [1]
  1. South China Univ. of Technology (SCUT), Guangzhou (China)
  2. Shanghai Jiao Tong Univ. (China)
  3. Friedrich-Alexander-Univ. Erlangen-Nürnberg, (Germany); Helmholtz Inst. Erlangen-Nürnberg for Renewable Energy (HI ERN) (Germany); Zhengzhou Univ., (China)
  4. Friedrich-Alexander-Univ. Erlangen-Nürnberg, (Germany); Helmholtz Inst. Erlangen-Nürnberg for Renewable Energy (HI ERN) (Germany)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NNSFC); German Research Foundation (DFG); State of Bavaria
OSTI Identifier:
1624191
Grant/Contract Number:  
AC02-05CH11231; BR 4031/13-1
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; Science & technology - other topics; Materials science; Optics and photonics

Citation Formats

Fan, Baobing, Zhong, Wenkai, Ying, Lei, Zhang, Difei, Li, Meijing, Lin, Yanrui, Xia, Ruoxi, Liu, Feng, Yip, Hin-Lap, Li, Ning, Ma, Yuguang, Brabec, Christoph J., Huang, Fei, and Cao, Yong. Surpassing the 10% efficiency milestone for 1-cm2 all-polymer solar cells. United States: N. p., 2019. Web. doi:10.1038/s41467-019-12132-6.
Fan, Baobing, Zhong, Wenkai, Ying, Lei, Zhang, Difei, Li, Meijing, Lin, Yanrui, Xia, Ruoxi, Liu, Feng, Yip, Hin-Lap, Li, Ning, Ma, Yuguang, Brabec, Christoph J., Huang, Fei, & Cao, Yong. Surpassing the 10% efficiency milestone for 1-cm2 all-polymer solar cells. United States. doi:10.1038/s41467-019-12132-6.
Fan, Baobing, Zhong, Wenkai, Ying, Lei, Zhang, Difei, Li, Meijing, Lin, Yanrui, Xia, Ruoxi, Liu, Feng, Yip, Hin-Lap, Li, Ning, Ma, Yuguang, Brabec, Christoph J., Huang, Fei, and Cao, Yong. Tue . "Surpassing the 10% efficiency milestone for 1-cm2 all-polymer solar cells". United States. doi:10.1038/s41467-019-12132-6. https://www.osti.gov/servlets/purl/1624191.
@article{osti_1624191,
title = {Surpassing the 10% efficiency milestone for 1-cm2 all-polymer solar cells},
author = {Fan, Baobing and Zhong, Wenkai and Ying, Lei and Zhang, Difei and Li, Meijing and Lin, Yanrui and Xia, Ruoxi and Liu, Feng and Yip, Hin-Lap and Li, Ning and Ma, Yuguang and Brabec, Christoph J. and Huang, Fei and Cao, Yong},
abstractNote = {Naphthalenediimide-based n-type polymeric semiconductors are extensively used for constructing high-performance all-polymer solar cells (all-PSCs). For such all-polymer systems, charge recombination can be reduced by using thinner active layers, yet suffering insufficient near-infrared light harvesting from the polymeric acceptor. Conversely, increasing the layer thickness overcomes the light harvesting issue, but at the cost of severe charge recombination effects. Here we demonstrate that to manage light propagation within all-PSCs, a thick bulk-heterojunction film of approximately 350 nm is needed to effectively enhance photo-harvesting in the near-infrared region. To overcome the severe charge recombination in such a thick film, a non-halogenic additive is used to induce a well-ordered micro-structure that inherently suppresses recombination loss. The combined strategies of light management and delicate morphology optimization lead to a promising efficiency over 10% for thick-film all-PSCs with active area of 1 cm2, showing great promise for future large-scale production and application of all-PSCs.},
doi = {10.1038/s41467-019-12132-6},
journal = {Nature Communications},
number = 1,
volume = 10,
place = {United States},
year = {2019},
month = {9}
}

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