Porous TiO2 thin films synthesized by a spray pyrolysis deposition (SPD) technique and their application to dye-sensitized solar cells
Porous TiO2 thin films synthesized by a spray pyrolysis deposition (SPD) technique and their application to dye-sensitized solar cells
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DOI：
10.1016/s0927-0248(01)00033-2
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发表时间：
2002
影响因子：
6.9
通讯作者：
M. Okuya;K. Nakade;S. Kaneko
中科院分区：
文献类型：
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作者：
M. Okuya;K. Nakade;S. Kaneko
以乙酰丙酮氧钛（IV）的正丁醇溶液为原料，采用喷雾热分解沉积（SPD）技术在玻璃基片上制备了二氧化钛（TiO 2）薄膜。薄膜由TiO 2片层组成，薄膜沿（200）方向沿着取向生长。通过在源溶液中添加少量的乙酰丙酮铝（III）（AA）成功地增加了膜的表面积。这是因为AA在膜形成期间容易升华，从而在膜内留下许多孔。采用SPD技术在掺氟氧化锡薄膜上沉积TiO 2薄膜，制成染料敏化太阳能电池。当源溶液中AA含量为0.6at%时，电池的转换效率提高了3.2%，这是由于AA含量为0.6at%时，固定在TiO 2层表面的染料量最高。虽然转换效率相对较低，但这一发现导致在不久的将来工业生产染料敏化太阳能电池的可能性。
Titanium dioxide (TiO2) thin films were synthesized on glass substrates from titanium(IV)oxy acetylacetonate 2-butanol solution by a spray pyrolysis deposition (SPD) technique. The films consisted of TiO2leaflets and showed the oriented growth along the (200) direction. The surface area of the film was successfully increased by adding a small amount of aluminum(III) acetylacetonate (AA) in the source solution. This is because AA sublimates easily during the film formation to leave many pores within the film. A dye-sensitized solar cell was constructed with the TiO2film which was deposited on the fluorine-doped tin(IV) oxide layer by the SPD technique. The conversion efficiency of the cell was effectively enhanced as high as 3.2% at AA content of 0.6at% in the source solution, attributing to the fact that the amount of a dye anchored on the surface of TiO2layer was the highest at this AA content. Although the conversion efficiency is relatively low, this finding leads to the possibility of an industrial production of a dye-sensitized solar cell in the near future.