Nanostructured photoelectrode consisting of TiO2 hollow spheres for non-volatile electrolyte-based dye-sensitized solar cells

作者：Park Jong Hyuk; Jung Sun Young; Kim Raehyun; Park Nam Gyu; Kim Junkyung; Lee Sang Soo^*

来源：Journal of Power Sources, 2009, 194(1): 574-578.

DOI：10.1016/j.jpowsour.2009.03.075

• Dye-sensitized solar cell
• Hollow sphere
• Non-volatile electrolyte
• Light-harvesting
• Electron diffusion

A photorelectrode 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.

• 出版日期2009-10-20