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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 29, Number 8
BKCSDE 29(8)
August 20, 2008

Title	Synthesis of Nanocrystalline TiO₂ by Sol-Gel Combustion Hybrid Method and Its Application to Dye Solar Cells
Author	Chi-Hwan Han*, Hak-Soo Lee, Sang-Do Han
Keywords	Nanocrystalline TiO₂, Sol-gel combustion hybrid method, Dye solar cell, Ru-complex
Abstract	TiO₂ nanopowders were synthesized by new sol-gel combustion hybrid method using acetylene black as a fuel. The dried gels exhibited autocatalytic combustion behaviour. TiO₂ nanopowders with an anatase structure and a narrow size distribution were obtained at 400-600℃. Their crystal structures were examined by powder Xray diffraction (XRD) and their morphology and crystal size were investigated by scanning electron microscopy (SEM). The crystal size of the nanopowders was found to be in the range of 15-20 nm. TiO₂ powders synthesized at 500℃ and 600℃ were applied to a dye solar cell. An efficiency of 5.2% for the conversion of solar energy to electricity (J_sc = 11.79 mA/cm2, V_oc = 0.73 V, and FF = 0.58) was obtained for an AM 1.5 irradiation (100 mW/cm²) using the TiO₂ nanopowder synthesized by the sol-gel combustion hybrid method at 500℃.
Page	1495 - 1498
Full Text	PDF

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