Efficient, Thermally Stable, and Mechanically Robust All-Polymer Solar Cells Consisting of the Same Benzodithiophene Unit-Based Polymer Acceptor and Donor with High Molecular Compatibility
Abstract
Abstract All‐polymer solar cells (all‐PSCs) are a highly attractive class of photovoltaics for wearable and portable electronics due to their excellent morphological and mechanical stabilities. Recently, new types of polymer acceptors ( P A s) consisting of non‐fullerene small molecule acceptors (NFSMAs) with strong light absorption have been proposed to enhance the power conversion efficiency (PCE) of all‐PSCs. However, polymerization of NFSMAs often reduces entropy of mixing in PSC blends and prevents the formation of intermixed blend domains required for efficient charge generation and morphological stability. One approach to increase compatibility in these systems is to design P A s that contain the same building blocks as their polymer donor ( P D ) counterparts. Here, a series of NFSMA‐based P A s [P(BDT2BOY5‐X), (X = H, F, Cl)] are reported, by copolymerizing NFSMA (Y5‐2BO) with benzodithiophene (BDT), a common donating unit in high‐performance P D s such as PBDB‐T. All‐PSC blends composed of PBDB‐T P D and P(BDT2BOY5‐X) P A show enhanced molecular compatibility, resulting in excellent morphological and electronic properties. Specifically, PBDB‐T:P(BDT2BOY5‐Cl) all‐PSC has a PCE of 11.12%, which is significantly higher than previous PBDB‐T:Y5‐2BO (7.02%) and PBDB‐T:P(NDI2OD‐T2) (6.00%) PSCs. Additionally, the increased compatibility of these all‐PSCs greatlymore »
- Authors:
-
[1]
- Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of)
- Gyeongsang National University, Jinju (Korea, Republic of)
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1837372
- Alternate Identifier(s):
- OSTI ID: 1804550
- Grant/Contract Number:
- AC02-05CH11231; DE‐AC02‐05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Energy Materials
- Additional Journal Information:
- Journal Volume: 11; Journal Issue: 5; Journal ID: ISSN 1614-6832
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 14 SOLAR ENERGY
Citation Formats
Lee, Jin‐Woo, Sun, Cheng, Ma, Boo Soo, Kim, Hyeong Jun, Wang, Cheng, Ryu, Jong Min, Lim, Chulhee, Kim, Taek‐Soo, Kim, Yun‐Hi, Kwon, Soon‐Ki, and Kim, Bumjoon J. Efficient, Thermally Stable, and Mechanically Robust All-Polymer Solar Cells Consisting of the Same Benzodithiophene Unit-Based Polymer Acceptor and Donor with High Molecular Compatibility. United States: N. p., 2020.
Web. doi:10.1002/aenm.202003367.
Lee, Jin‐Woo, Sun, Cheng, Ma, Boo Soo, Kim, Hyeong Jun, Wang, Cheng, Ryu, Jong Min, Lim, Chulhee, Kim, Taek‐Soo, Kim, Yun‐Hi, Kwon, Soon‐Ki, & Kim, Bumjoon J. Efficient, Thermally Stable, and Mechanically Robust All-Polymer Solar Cells Consisting of the Same Benzodithiophene Unit-Based Polymer Acceptor and Donor with High Molecular Compatibility. United States. https://doi.org/10.1002/aenm.202003367
Lee, Jin‐Woo, Sun, Cheng, Ma, Boo Soo, Kim, Hyeong Jun, Wang, Cheng, Ryu, Jong Min, Lim, Chulhee, Kim, Taek‐Soo, Kim, Yun‐Hi, Kwon, Soon‐Ki, and Kim, Bumjoon J. Mon .
"Efficient, Thermally Stable, and Mechanically Robust All-Polymer Solar Cells Consisting of the Same Benzodithiophene Unit-Based Polymer Acceptor and Donor with High Molecular Compatibility". United States. https://doi.org/10.1002/aenm.202003367. https://www.osti.gov/servlets/purl/1837372.
@article{osti_1837372,
title = {Efficient, Thermally Stable, and Mechanically Robust All-Polymer Solar Cells Consisting of the Same Benzodithiophene Unit-Based Polymer Acceptor and Donor with High Molecular Compatibility},
author = {Lee, Jin‐Woo and Sun, Cheng and Ma, Boo Soo and Kim, Hyeong Jun and Wang, Cheng and Ryu, Jong Min and Lim, Chulhee and Kim, Taek‐Soo and Kim, Yun‐Hi and Kwon, Soon‐Ki and Kim, Bumjoon J.},
abstractNote = {Abstract All‐polymer solar cells (all‐PSCs) are a highly attractive class of photovoltaics for wearable and portable electronics due to their excellent morphological and mechanical stabilities. Recently, new types of polymer acceptors ( P A s) consisting of non‐fullerene small molecule acceptors (NFSMAs) with strong light absorption have been proposed to enhance the power conversion efficiency (PCE) of all‐PSCs. However, polymerization of NFSMAs often reduces entropy of mixing in PSC blends and prevents the formation of intermixed blend domains required for efficient charge generation and morphological stability. One approach to increase compatibility in these systems is to design P A s that contain the same building blocks as their polymer donor ( P D ) counterparts. Here, a series of NFSMA‐based P A s [P(BDT2BOY5‐X), (X = H, F, Cl)] are reported, by copolymerizing NFSMA (Y5‐2BO) with benzodithiophene (BDT), a common donating unit in high‐performance P D s such as PBDB‐T. All‐PSC blends composed of PBDB‐T P D and P(BDT2BOY5‐X) P A show enhanced molecular compatibility, resulting in excellent morphological and electronic properties. Specifically, PBDB‐T:P(BDT2BOY5‐Cl) all‐PSC has a PCE of 11.12%, which is significantly higher than previous PBDB‐T:Y5‐2BO (7.02%) and PBDB‐T:P(NDI2OD‐T2) (6.00%) PSCs. Additionally, the increased compatibility of these all‐PSCs greatly improves their thermal stability and mechanical robustness. For example, the crack onset strain (COS) and toughness of the PBDB‐T:P(BDT2BOY5‐Cl) blend are 15.9% and 3.24 MJ m –3 , respectively, in comparison to the PBDB‐T:Y5‐2BO blends at 2.21% and 0.32 MJ m –3 .},
doi = {10.1002/aenm.202003367},
journal = {Advanced Energy Materials},
number = 5,
volume = 11,
place = {United States},
year = {Mon Dec 21 00:00:00 EST 2020},
month = {Mon Dec 21 00:00:00 EST 2020}
}
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