本文将石墨、TiO2纳米晶以及TiO2胶体共混,采用旋涂法制备了碳薄膜对电极,并用于组装染料敏化太阳能电池.采用场发射扫描电子显微镜观察薄膜的表面形貌,采用四探针电阻率测试仪、电化学交流阻抗图谱及太阳能电池综合测试仪对碳对电极的电学、电化学性质以及电池的光电性能分别进行测试;研究了薄膜厚度对碳对电极导电性能与电化学催化性能的影响.结果表明随着厚度增加,碳对电极的方块电阻和界面电荷传输电阻均变小,分别可达到26.6Ω.sP -1和11.8Ω.cm-2,而电池的填充因子及光电转换效率增大.当碳薄膜厚度为19.5μm时,光电转换效率可达到Pt对电极的70％.
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