Authors: Ryohei Mori Tsutomu Ueta Kazuo Sakai Yasuhiro Niida Yasuko Koshiba Li Lei Katsuhiko Nakamae Yasukiyo Ueda
Publish Date: 2010/09/28
Volume: 46, Issue: 5, Pages: 1341-1350
Abstract
In order to prepare the TiO2 liquid dispersions for the electrodes of dyesensitized solar cells with industrial mass production level at a reasonable cost the present study investigates the preparation of TiO2 liquid dispersions by a general industrial dispersion technique using readily available P25 To determine the TiO2 dispersion offering the best light–electricity energy conversion efficiency the suitability of various types of solvents and resins for use in TiO2 dispersion are tested In general organic solvent based TiO2 dispersions are found to allow the formation of more uniform thin films in comparison with waterbased dispersions A preparation using ethyl cellulose as the resin and the terpineol as the solvent is found to exhibit the best conversion efficiency We have also found that using two kinds of resins of different molecular weights gave rise to better efficiency Among 26 metal compounds tested in this study the best metal dopant was Ag XRD and XPS measurements confirm that the Ag exists as metal Ag and silver oxideThis study has been carried out through Collaboration of Regional Entities for the Advancement of Technological Excellence abbr CREATE organized by HYOGO Prefecture and funded by Japan Science and Technology Agency abbr JST for development of common ground of nanoparticle composite
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