Journal
CRYSTENGCOMM
Volume 16, Issue 14, Pages 3020-3028Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ce42594k
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Funding
- NRF [2011-0029527]
- Leaders in Industry-University Cooperation Project
- Ministry of Education, Science & Technology (MEST)
- National Research Foundation of Korea (NRF)
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Highly dense and well-defined TiO2 nanoflowers (NFs) were grown by the hydrothermal process on a titanium (Ti) coated FTO substrate. The Ti layer with a thickness of similar to 500-600 nm was deposited on FTO at room temperature with a pressure of similar to 5 mTorr using a Ti-source through RF magnetic sputtering. The unique TiO2 NF thin film substrate was applied as a photoanode for the fabrication of a dye sensitized solar cell (DSSCs). Each NF was made of uniform clover leaf-like petals of an average diameter of similar to 80-100 nm. The synthesized TiO2 NFs possessed a pure anatase phase with good crystal quality. The fabricated DSSC with TiO2 NF thin film photoanode accomplished a reasonably good overall solar-to-electricity conversion efficiency (eta) of similar to 3.64% with a high short circuit photocurrent density (J(SC)) of similar to 9.6 mA cm(-2). The improved performance and photocurrent density were explained by the charge transport time, diffusion coefficient, diffusion length and charge collection efficiency of the fabricated DSSC.
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