Mechanically and Ultraviolet Light Stable Ultrathin Organic Solar Cell via Semi‐Embedding Silver Nanowires in a Hydrogen Bonds‐Based Polyimide. Issue 22 (2nd August 2022)

• Record Type: Journal Article
• Authors: Wang, Yongmei; Chen, Qiaomei; Wang, Yupu; Zhang, Guangcong; Zhang, Zhou; Fang, Jie; Zhao, Chaowei; Li, Weiwei
• Other Names: Zhang Xin guestEditor.; Huang Hui guestEditor.
• Is Part Of: Macromolecular rapid communications. Volume 43:Issue 22(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-02
• Subjects: flexible transparent composite electrodes -- operational stability -- polyimides -- semi‐embedding strategies -- ultrathin organic solar cells; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.202200432
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: Ultrathin organic solar cells (OSCs) with both high power conversion efficiency (PCE) and operational stability are of great significance for the industrial applications but still challenging. Here, a polyimide (PI) substrate for high‐performance and stable ultrathin OSCs, which is physically crosslinked via strong hydrogen bonds (denoted as HB–PI) to enhance the mechanical, thermal, solvent‐resistant, and UV filtering properties (with a cut‐off wavelength of 376 nm), is synthesized. An ultrathin flexible transparent composite electrode (FTCE, ≈7 µm) is fabricated via semi‐embedding AgNWs in the HB–PI substrate. The FTCE possesses excellent optoelectronic property, smooth surface, and high mechanical stability simultaneously. Based on this FTCE, an ultrathin OSC is constructed with a PCE of 13.52% (average of 13.22%). Moreover, the ultrathin OSC shows outstanding mechanical stability (PCE decreased by less than 4% after 1000 bending cycles at a small bending radius of 0.5 mm) and superior UV light stability (no evident PCE degradation after irradiation under UV light for 10 h). This work will provide a new avenue for fabricating high‐performance and stable ultrathin OSCs. Abstract : A hydrogen bond enhanced polyimide with UV light filtering property is explored to fabricate an ultrathin organic solar cell via the strategy of semi‐embedding AgNWs in the polyimide. The obtained ultrathin organic solar cell shows both outstanding mechanical stability and UV light stability.