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

Authors
Park, Jong HyukJung, Sun YoungKim, RaehyunPark, Nam-GyuKim, JunkyungLee, Sang-Soo
Issue Date
20-10월-2009
Publisher
ELSEVIER SCIENCE BV
Keywords
Dye-sensitized solar cell; Hollow sphere; Non-volatile electrolyte; Light-harvesting; Electron diffusion
Citation
JOURNAL OF POWER SOURCES, v.194, no.1, pp.574 - 578
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF POWER SOURCES
Volume
194
Number
1
Start Page
574
End Page
578
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/119103
DOI
10.1016/j.jpowsour.2009.03.075
ISSN
0378-7753
Abstract
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. (C) 2009 Elsevier B.V. All rights reserved.
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