期刊
SCIENCE CHINA-CHEMISTRY
卷 62, 期 7, 页码 851-858出版社
SCIENCE PRESS
DOI: 10.1007/s11426-018-9430-8
关键词
flexible electrodes; flexible organic solar cells; silver nanowire; composite electrode; power conversion efficiency
资金
- National Natural Science Foundation of China [51673138, 51820105003, 91633301]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Jiangsu Provincial Natural Science Foundation [BK20160059]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [16KJB430027]
- National Key Research and Development Program of China [2017YFA0207700]
The performance of flexible organic solar cells (OSCs) significantly relies on the quality of transparent flexible electrode. Here, we used silver nanowires (AgNWs) with various weight ratios to dope high-conductive poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (PH1000) to optimize the optical and electronic properties of PH1000 film. A high-quality flexible composite electrode PET/Ag-mesh/PH1000:AgNWs-20 with smooth surface, a low sheet resistance of 6 /sq and a high transmittance of 86% at 550-nm wavelength was obtained by doping 20 wt% AgNWs to PH1000 (PH1000:AgNWs-20). The flexible OSCs based on the PET/Ag-mesh/PH1000:AgNWs-20 electrode delivered a power conversion efficiency (PCE) of 12.07% with an open circuit voltage (V-oc) of 0.826 V, a short-circuit current density (J(sc)) of 20.90 mA/cm(2) and a fill factor (FF) of 69.87%, which is the highest reported PCE for the flexible indium-tin oxide (ITO)-free OSCs. This work demonstrated that the flexible composite electrodes of PET/Ag-mesh/PH1000:AgNWs are promising alternatives for the conventional PET/ITO electrode, and open a new avenue for developing high-performance flexible transparent electrode for optoelectronic devices.
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