Comprehensive study of efficient dye-sensitized solar cells based on the binary ionic liquid electrolyte by modifying with additives and iodine

Optoelectronics Letters - Tập 13 - Trang 263-267 - 2017
Ao-qiang Mo1, Da-peng Cao2, Wu-yang Wang1,3, Xue-yan Li2, Bao-xiu Mi2,4, Zhi-qiang Gao2, Zhong-cheng Liang1
1School of Optoelectronic Engineering, Nanjing University of Posts & Telecommunications, Nanjing, China
2School of Material Science and Engineering, Nanjing University of Posts & Telecommunications, Nanjing, China
3ZTE Nanjing Branch, Nanjing, China
4National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts&Telecommunications, Nanjing, China

Tóm tắt

The photovoltaic performance of dye-sensitized solar cells (DSSCs) is enhanced by modifying the binary room temperature ionic liquid (RTIL) electrolyte with additives and iodine. The average photoelectric conversion efficiency (PCE) of 6.39% is achieved. Through electrochemical impedance spectroscopy (EIS), cyclic voltammetry scans and incident photon-to-current conversion efficiency (IPCE) data, the working principles are analyzed. The enhancement is mainly attributed to the improvement of short circuit current which is caused by the reduction of overall internal resistance of the devices. Durability tests are measured at room temperature, and the long-term stability performance can be maintained.

Tài liệu tham khảo

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