色素敏化染料
电解质
电极
材料科学
纳米晶材料
化学工程
多孔性
纳米结构
球体
纳米技术
化学
复合材料
物理
物理化学
天文
工程类
作者
Jong Hyuk Park,Sun Young Jung,Raehyun Kim,Nam Gyu Park,Junkyung Kim,Sang Soo Lee
标识
DOI:10.1016/j.jpowsour.2009.03.075
摘要
A photoelectrode consisting of titania hollow spheres for dye-sensitized solar cells (DSSCs) is prepared by a paste method and the effect of the nanostructure on the performance of DSSCs with non-volatile electrolytes is investigated. The structure of the hollow sphere (HS) electrode with a large pore size and a high porosity allows highly viscous non-volatile electrolytes to penetrate the electrode thoroughly. Furthermore, its outstanding light-harvesting efficiency and long electron diffusion length make the efficiency of the DSSCs with the HS electrode comparable with those of a conventional nanocrystalline electrode, in spite of the smaller amount of the adsorbed dye, when oligomer electrolytes are used. The results show that the structure of a photoelectrode highly improves the performance of the device and the HS electrode is an effective structure for the use of non-volatile electrolytes in DSSCs.
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