石墨烯/TiO_2复合光阳极的制备及对染料敏化太阳能电池的影响  

Preparation of Graphene/TiO_2 Composite Photoanode for Dye-sensitized Solar Cells

作　　者：郭俊雄[1] 崔旭梅[2] 蓝德均[2] 左承阳[2] 

机构地区：[1]西华大学材料科学与工程学院,成都610039 [2]攀枝花学院材料工程学院,攀枝花617000

出　　处：《材料导报（纳米与新材料专辑）》2016年第2期210-212,218,共4页

基　　金：教育部新世纪优秀人才支持计划项目(NCET-10-0946);四川省青年科技创新团队项目(2011JTD0039;2015TD0008);攀枝花市创新团队项目(2011TX-15)

摘　　要：采用手术刀刮涂方式制备了不同质量比的片状石墨烯/TiO_2复合电极,研究了石墨烯的加入对染料敏化太阳能电池性能的影响。结果表明,石墨烯复合电极能有效抑制电子与氧化态染料分子及电解质中氧化还原点对的复合,降低电池的暗电流,提高电子的传输与收集效率,进而提高电池的性能。当石墨烯与纳米TiO_2颗粒的质量比为0.6%时电池性能达到最佳,较之单一TiO_2电极,短路电流密度为9.19mA·cm-2,提高了47.28%,光电转化效率为4.79%,提高了52.20%。Doctor-Made method was used to prepare the combination electrodes with different mass ratio of graphene and TiO2 particles and the influence on the dye-sensitized solar cells with the addition of graphene was studied comprehensively. It could be concluded that the prepared composite electrode dark current had declined and the short- circuit current density had been enhanced. When the doping mass ratio of P25 and graphene was 0. 6%, the perfor- mance of assembled cell was the best. The short-circuit current density and photoelectric conversion efficiency was 9. 19 mA · cm-2 and 4. 79% ,which increased 47. 28% and 52. 20%compared with the pure TiO2 electrode,respectively.

关 键 词：石墨烯 染料敏化太阳能电池 光电转换效率 复合电极 

分 类 号：TM914.4[电气工程—电力电子与电力传动]