辅助电极
聚苯胺
材料科学
电极
色素敏化染料
铂金
循环伏安法
电解质
光电流
介电谱
化学工程
导电聚合物
无机化学
电化学
光电子学
化学
聚合物
复合材料
有机化学
催化作用
聚合
物理化学
工程类
作者
Shehna Farooq,Asif Ali Tahir,Ulrike Krewer,Anwar‐ul‐Haq Ali Shah,Salma Bilal
标识
DOI:10.1016/j.electacta.2019.07.055
摘要
Platinum-free counter electrodes are crucial for developing cost effective solar energy harvesting technology. We describe here the fabrication of efficient platinum free FTO counter electrodes for dye sensitized solar cells based on pristine polyaniline, polyaniline doped with sulfuric acid, ammonuim lauryl sulfate, as well as binary doped with sulfuric acid and ammonium lauryl sulphate. The characteristics of these counter electrodes were analyzed using cyclic voltammetry, photocurrent density–voltage and electrochemical impedance spectroscopy measurements. At optimized fabrication conditions, the counter electrode shows significantly high photoelectric conversion efficiency of 4.54% compared to 4.03% for reference platinum counter electrode. Charge transfer resistance at the interface between electrolyte and counter-electrode is also decreased for the optimized polyaniline based counter electrode. Furthermore, the device presented characteristics of multiple start/stop ability and fast activity. The simple preparation procedure, low cost and improved photoelectric properties permit fabricated counter electrode to be a reliable alternative for dye sensitized solar cells.
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