skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: From binary to quaternary: high-tolerance of multi-acceptors enables development of efficient polymer solar cells [From binary to quaternary: high-tolerance of multi-acceptors enables efficient polymer solar cells]

Abstract

For optimum coverage of the optical spectrum and further enhancement of the carrier transport, ternary and even more multi-composition strategies have been universally explored. As PC 71BM and PC 61BM are both compatible with PTB7-Th and IEICO-4F takes advantage of optical absorption in the near-infrared region, we combined PTB7-Th:IEICO-4F:PC 71BM:PC 61BM quaternary compositions to fabricate high-efficiency polymer solar cells (PSCs) with good tolerance ratios of the fullerene acceptors. After blending the fullerene alloys PC 71BM and PC 61BM into the host PTB7-Th:IEICO-4F system, the optical response in the whole wavelength regime has been strengthened with significantly enhanced electron mobility. Concomitantly, the short-circuit current density ( J sc) surged from 22.07 to 24.37 mA cm –2 and the fill factor (FF) ascended from 58.24% to 69.30%, which finally resulted in a champion power conversion efficiency (PCE) of 12.52%, which is much higher than that of the binary control device (9.67%). This significant improvement is attributed to the fine-tuning of the morphology of the photo-active layer and feasible carrier transport. Interestingly, this finding implicates the synergistic effect of PC 71BM and PC 61BM to successfully enhancing the carrier transport. In addition, it demonstrates a broad tolerance of the acceptor proportions, resulting inmore » higher PCE values for the quaternary devices as compared to the ternary devices. Lastly, generality for other systems evidences and provides guidelines for quaternary strategy utilization. Furthermore, the simplicity of quaternary strategies could be greatly beneficial to not yet elaborate commercial processes.« less

Authors:
 [1];  [2]; ORCiD logo [3]; ORCiD logo [2]
  1. Southern Univ. of Science and Technology, Shenzhen (People's Republic of China); Harbin Inst. of Technology, Harbin (People's Republic of China)
  2. Southern Univ. of Science and Technology, Shenzhen (People's Republic of China)
  3. Argonne National Lab. (ANL), Lemont, IL (United States); The Univ. of Chicago, Chicago, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Natural Science Foundation of China (NNSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
OSTI Identifier:
1508131
Alternate Identifier(s):
OSTI ID: 1499823
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Materials Chemistry. A
Additional Journal Information:
Journal Volume: 7; Journal Issue: 13; Journal ID: ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; polymer solar cells; quaternary; high tolerance; carrier transport

Citation Formats

Liu, Longzhu, Chen, Hui, Chen, Wei, and He, Feng. From binary to quaternary: high-tolerance of multi-acceptors enables development of efficient polymer solar cells [From binary to quaternary: high-tolerance of multi-acceptors enables efficient polymer solar cells]. United States: N. p., 2019. Web. doi:10.1039/C9TA00948E.
Liu, Longzhu, Chen, Hui, Chen, Wei, & He, Feng. From binary to quaternary: high-tolerance of multi-acceptors enables development of efficient polymer solar cells [From binary to quaternary: high-tolerance of multi-acceptors enables efficient polymer solar cells]. United States. doi:10.1039/C9TA00948E.
Liu, Longzhu, Chen, Hui, Chen, Wei, and He, Feng. Thu . "From binary to quaternary: high-tolerance of multi-acceptors enables development of efficient polymer solar cells [From binary to quaternary: high-tolerance of multi-acceptors enables efficient polymer solar cells]". United States. doi:10.1039/C9TA00948E.
@article{osti_1508131,
title = {From binary to quaternary: high-tolerance of multi-acceptors enables development of efficient polymer solar cells [From binary to quaternary: high-tolerance of multi-acceptors enables efficient polymer solar cells]},
author = {Liu, Longzhu and Chen, Hui and Chen, Wei and He, Feng},
abstractNote = {For optimum coverage of the optical spectrum and further enhancement of the carrier transport, ternary and even more multi-composition strategies have been universally explored. As PC71BM and PC61BM are both compatible with PTB7-Th and IEICO-4F takes advantage of optical absorption in the near-infrared region, we combined PTB7-Th:IEICO-4F:PC71BM:PC61BM quaternary compositions to fabricate high-efficiency polymer solar cells (PSCs) with good tolerance ratios of the fullerene acceptors. After blending the fullerene alloys PC71BM and PC61BM into the host PTB7-Th:IEICO-4F system, the optical response in the whole wavelength regime has been strengthened with significantly enhanced electron mobility. Concomitantly, the short-circuit current density (Jsc) surged from 22.07 to 24.37 mA cm–2 and the fill factor (FF) ascended from 58.24% to 69.30%, which finally resulted in a champion power conversion efficiency (PCE) of 12.52%, which is much higher than that of the binary control device (9.67%). This significant improvement is attributed to the fine-tuning of the morphology of the photo-active layer and feasible carrier transport. Interestingly, this finding implicates the synergistic effect of PC71BM and PC61BM to successfully enhancing the carrier transport. In addition, it demonstrates a broad tolerance of the acceptor proportions, resulting in higher PCE values for the quaternary devices as compared to the ternary devices. Lastly, generality for other systems evidences and provides guidelines for quaternary strategy utilization. Furthermore, the simplicity of quaternary strategies could be greatly beneficial to not yet elaborate commercial processes.},
doi = {10.1039/C9TA00948E},
journal = {Journal of Materials Chemistry. A},
issn = {2050-7488},
number = 13,
volume = 7,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on March 14, 2020
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Polymer Solar Cells That Use Self-Assembled-Monolayer- Modified ZnO/Metals as Cathodes
journal, June 2008

  • Yip, Hin-Lap; Hau, Steven K.; Baek, Nam Seob
  • Advanced Materials, Vol. 20, Issue 12, p. 2376-2382
  • DOI: 10.1002/adma.200703050