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Mechanical Robust Flexible Single‐Component Organic Solar Cells
Author(s) -
Xie Chengcheng,
Jiang Xudong,
Zhu Qinglian,
Wang Dan,
Xiao Chengyi,
Liu Chunhui,
Ma Wei,
Chen Qiaomei,
Li Weiwei
Publication year - 2021
Publication title -
small methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.66
H-Index - 46
ISSN - 2366-9608
DOI - 10.1002/smtd.202100481
Subject(s) - materials science , organic solar cell , flexible electronics , polymer solar cell , polymer , nanotechnology , composite material , optoelectronics
Owing to the advantages of being lightweight and compatible with surfaces with different deformations, flexible organic solar cells (OSCs) have broad scopes of applications, including wearable electronics and portable devices. Most flexible OSCs focus on the two‐component bulk‐heterojunction (BHJ) photo‐active layers, but they usually suffer from degradation problems both in efficiency and mechanical durability derived from the limited phase stability under mechanical and thermal stress. Whereas, single‐component organic solar cells (SCOSCs) based on the double‐cable conjugated polymer are supposed to possess excellent mechanical robustness and long‐term stability. Here, the first flexible SCOSCs based on a double‐cable polymer are fabricated on a transparent silver nanowires (AgNWs) electrode on a plastic foil. Impressively, the obtained flexible SCOSCs exhibited a power conversion efficiency (PCE) of 7.21%. The flexible SCOSCs are further demonstrated to possess superior mechanical robustness (>95% retention after 1000 bending cycles) and storage stability (>97% retention after 430 h in nitrogen atmosphere) compared to several BHJ‐type flexible OSCs. The pseudo‐free‐standing tensile test and morphology investigation are conducted to reveal the distinction in mechanical durability of the single‐component polymer film and the BHJ‐type films. Besides, ultraflexible SCOSCs are also fabricated, indicating the application prospect and superiority in flexible devices and wearable electronic products.