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Title: Regulating crystallization to maintain balanced carrier mobility via ternary strategy in blade-coated flexible organic solar cells

Abstract

Regulating the crystallization of donor and acceptor to maintain balanced carrier mobility is of great importance to fabricate efficient organic solar cells (OSCs). Herein, the balanced crystallinity between donor and acceptor was finely controlled in blade-coated OSCs. By adding high crystalline FOIC into PBDB-T:ITIC system, a balanced carrier mobility was achieved, resulting in the much improved fill factor. The optimized ternary device exhibits an increased current density, due to the enhanced light-harvesting efficiency with complementary absorption and the morphology change. Morphology characterization demonstrated that the ternary film exhibits a highly balanced crystallinity between the donor and acceptor on account of the formation of acceptor alloy. Moreover, the ternary film not only possesses a small domain size, but also exhibits a high domain purity as compared to both binary films. Encouragingly, a highest power conversion efficiency (PCE) of 10.68% was obtained for the blade-coated ternary OSCs. In addition, the blade-coated flexible large-area (105 mm2) OSC based on PBDB-T:ITIC:FOIC ternary system also exhibits a high PCE of 9.81%, showing great potential in the high-throughput fabrication of OSCs.

Authors:
ORCiD logo [1];  [1];  [2];  [1];  [1];  [1];  [3];  [2];  [2];  [4];  [1]
  1. Central South University, Changsha (China)
  2. Nanchang University (China)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Xi'an Jiaotong Univ., Shaanxi (China)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1778012
Alternate Identifier(s):
OSTI ID: 1809774
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Organic Electronics
Additional Journal Information:
Journal Volume: 89; Journal ID: ISSN 1566-1199
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; Organic solar cells; Blade-coating; Ternary; Balance; Large-area

Citation Formats

Zhang, Lin, Yang, Fang, Meng, Xiangchuan, Yang, Shuzhi, Ke, Lili, Zhou, Conghua, Yan, Hongping, Hu, Xiaotian, Zhang, Shaohua, Ma, Wei, and Yuan, Yongbo. Regulating crystallization to maintain balanced carrier mobility via ternary strategy in blade-coated flexible organic solar cells. United States: N. p., 2021. Web. doi:10.1016/j.orgel.2020.106027.
Zhang, Lin, Yang, Fang, Meng, Xiangchuan, Yang, Shuzhi, Ke, Lili, Zhou, Conghua, Yan, Hongping, Hu, Xiaotian, Zhang, Shaohua, Ma, Wei, & Yuan, Yongbo. Regulating crystallization to maintain balanced carrier mobility via ternary strategy in blade-coated flexible organic solar cells. United States. https://doi.org/10.1016/j.orgel.2020.106027
Zhang, Lin, Yang, Fang, Meng, Xiangchuan, Yang, Shuzhi, Ke, Lili, Zhou, Conghua, Yan, Hongping, Hu, Xiaotian, Zhang, Shaohua, Ma, Wei, and Yuan, Yongbo. 2021. "Regulating crystallization to maintain balanced carrier mobility via ternary strategy in blade-coated flexible organic solar cells". United States. https://doi.org/10.1016/j.orgel.2020.106027.
@article{osti_1778012,
title = {Regulating crystallization to maintain balanced carrier mobility via ternary strategy in blade-coated flexible organic solar cells},
author = {Zhang, Lin and Yang, Fang and Meng, Xiangchuan and Yang, Shuzhi and Ke, Lili and Zhou, Conghua and Yan, Hongping and Hu, Xiaotian and Zhang, Shaohua and Ma, Wei and Yuan, Yongbo},
abstractNote = {Regulating the crystallization of donor and acceptor to maintain balanced carrier mobility is of great importance to fabricate efficient organic solar cells (OSCs). Herein, the balanced crystallinity between donor and acceptor was finely controlled in blade-coated OSCs. By adding high crystalline FOIC into PBDB-T:ITIC system, a balanced carrier mobility was achieved, resulting in the much improved fill factor. The optimized ternary device exhibits an increased current density, due to the enhanced light-harvesting efficiency with complementary absorption and the morphology change. Morphology characterization demonstrated that the ternary film exhibits a highly balanced crystallinity between the donor and acceptor on account of the formation of acceptor alloy. Moreover, the ternary film not only possesses a small domain size, but also exhibits a high domain purity as compared to both binary films. Encouragingly, a highest power conversion efficiency (PCE) of 10.68% was obtained for the blade-coated ternary OSCs. In addition, the blade-coated flexible large-area (105 mm2) OSC based on PBDB-T:ITIC:FOIC ternary system also exhibits a high PCE of 9.81%, showing great potential in the high-throughput fabrication of OSCs.},
doi = {10.1016/j.orgel.2020.106027},
url = {https://www.osti.gov/biblio/1778012}, journal = {Organic Electronics},
issn = {1566-1199},
number = ,
volume = 89,
place = {United States},
year = {2021},
month = {11}
}

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