Synthesis of Nanocrystalline TiO 2 by Sol-Gel Combustion Hybrid Method and Its Application to Dye Solar Cells
Synthesis of Nanocrystalline TiO 2 by Sol-Gel Combustion Hybrid Method and Its Application to Dye Solar Cells
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DOI：
10.5012/bkcs.2008.29.8.1495
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发表时间：
2008
影响因子：
1.7
通讯作者：
C. Han;Hak-Soo Lee;S. Han
中科院分区：
文献类型：
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作者：
C. Han;Hak-Soo Lee;S. Han
以乙炔黑为燃料，采用溶胶-凝胶燃烧混合法合成了纳米粉体。干凝胶表现出自催化燃烧行为。在400-600 ℃下获得具有纳米结构和窄尺寸分布的纳米粉末。用X射线粉末衍射（XRD）分析了其晶体结构，用扫描电子显微镜（SEM）分析了其形貌和晶粒尺寸。发现纳米粉末的晶体尺寸在15-20 nm的范围内。将在500 ℃和600 ℃下合成的粉末应用于染料太阳能电池。对于AM 1.5照射（100 mW/），使用通过溶胶-凝胶燃烧混合方法在500 ℃下合成的纳米粉末获得5.2%的太阳能到电的转换效率（= 11.79 mA/，= 0.73 V，和FF = 0.58）。
nanopowders were synthesized by new sol-gel combustion hybrid method using acetylene black as a fuel. The dried gels exhibited autocatalytic combustion behaviour. 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. 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 ( = 11.79 mA/, = 0.73 V, and FF = 0.58) was obtained for an AM 1.5 irradiation (100 mW/) using the nanopowder synthesized by the sol-gel combustion hybrid method at 500 .