Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 122, Issue 1, Pages 284-289Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2010.02.050
Keywords
Nanoporous TiO2; Nano-sized TiO2; Dye-sensitized solar cell (DSSC); N719 dye
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Funding
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [2009-0064865]
- National Research Foundation of Korea [2009-0064865] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study examined the characterization of nanoporous structured titanium dioxide and its application to dye-sensitized solar cells (DSSCs). TEM revealed nanopore sizes of 10.0 nm with a regular hexagonal form. When nanoporous structured TiO2 was applied to DSSC, the energy conversion efficiency was enhanced considerably compared with that using nanometer sized TiO2 prepared using a hydrothermal method. The energy conversion efficiency of the DSSC prepared from nanoporous structured TiO2 was approximately 8.71% with the N719 dye under 100 mW cm(-2) simulated light. FT-IR spectroscopy showed that the dye molecules were attached perfectly to the surface and more dye molecules were absorbed on the nanoporous structured TiO2 than on the nano-sized TiO2 particles prepared using a conventional hydrothermal method. Electrostatic force microscopy (EFM) showed that the electrons were transferred rapidly to the surface of the nanoporous structured TiO2 film. (C) 2010 Elsevier B.V. All rights reserved.
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