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

作　　者：MO Ao-qiang CAO Da-peng WANG Wu-yang LI Xue-yan MI Bao-xiu GAO Zhi-qiang LIANG Zhong-cheng 莫敖强;曹大鹏;汪午阳;李薛燕;密保秀;高志强;梁忠诚(School of Optoelectronic Engineering, Nanjing University of Posts & Telecommunications;School of Material Science and Engineering, Nanjing University of Posts & Telecommunications;ZTE Nanjing Branch;National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts&Telecommunications)

机构地区：[1]School of Optoelectronic Engineering, Nanjing University of Posts ＆ Telecommunications, Nanjing 210023, China [2]School of Material Science and Engineering, Nanjing University of Posts ＆ Telecommunications, Nanjing 210023, China [3]ZTE Nanjing Branch, Nanjing 210023, China [4]National Synergetic Innovation Center for Advanced Materials, Nanjing University of Posts＆Telecommunications, Nanjing 210023, China

出　　处：《Optoelectronics Letters》2017年第4期263-267,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61474064)

摘　　要：The photovoltaic performance of dye-sensitized solar cells （DSSCs） is enhanced by modifying the binary room tem- perature 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 （1PCE） 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.

关 键 词：Bins Conversion efficiency Cyclic voltammetry Durability Efficiency Electrochemical impedance spectroscopy Electrolytes IODINE Ionic liquids PHOTOELECTRICITY Solar cells Solar power generation 

分 类 号：TM914.4[电气工程—电力电子与电力传动] O645.4[理学—物理化学]