Enhanced Electron Transport in Mesoporous TiO2 Films Modified by Sol- Gel Necking for Dye-Sensitized Solar Cells

Title
Enhanced Electron Transport in Mesoporous TiO2 Films Modified by Sol- Gel Necking for Dye-Sensitized Solar Cells
Author(s)
안상엽[안상엽]박정현[박정현]김재홍최철종[최철종]김현수[김현수]안광순
Keywords
LOW-TEMPERATURE FABRICATION; EFFICIENCY
Issue Date
201204
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.12, no.4, pp.3398 - 3401
Abstract
Mesoporous TiO2 films modified via sol-gel necking were fabricated by dispersing Ti tetra-iso-propoxide (TTIP; 8 to 16 wt% over TiO2) with TiO2 nanoparticles in isopropyl alcohol. The dye-sensitized solar cells (DSSCs) with 13 wt% TTIP-modified TiO2 film exhibited significantly improved overall energy conversion efficiency, despite having less adsorbed dye when compared with DSSCs with untreated and TiCI4 post-treated TiO2 films. The improvement can be attributed to the sol-gel necking (or interconnection) between the nanoparticles which leads to a much faster electron transport and a suppression of the recombination (or back electron transfer) between the TiO2 and electrolyte.
URI
http://hdl.handle.net/YU.REPOSITORY/28604http://dx.doi.org/10.1166/jnn.2012.5575
ISSN
1533-4880
Appears in Collections:
공과대학 > 화학공학부 > Articles
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