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The Synthesize of Mesoporous Nanometer TiO2 and Applied in Dye-sensitized Solar Cell

Author: JiaoLiNan
Tutor: ShaoZhongBao；CaoLiHua
School: Northeastern University
Course: Physical and chemical
Keywords: Nano TiO2 mesoporous Sol-gel method Hydrothermal crystallization method Dye-sensitized solar cells
CLC: TM914.4
Type: Master's thesis
Year: 2008
Downloads: 183
Quote: 0
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Abstract


Mesoporous nanocrystalline titanium dioxide is a very important semiconductor material has a wide range of applications in the field of photovoltaics , gas sensing and photocatalytic . In order to make better use of its performance in this respect , as well as the porous material to obtain a large surface area and to be applied on the solar cell was prepared in the pore structure having a nanocrystalline titanium dioxide has an important significance. The use of chemical synthesis of mesoporous nanocrystalline titanium dioxide prepared dye-sensitized solar cells . By XRD, TG-DSC , BET, a transmission electron microscope , a field emission of the material were characterized by scanning tunneling electron microscope analysis means , and also studied the influence of the surface active agent to be added on the pore size and other factors . Using the sol-gel synthesis of mesoporous nanocrystalline TiO2 . Surfactant prepared aperture range of 5-10nm hole nano- TiO2 discussed using hydrothermal crystallization method , by changing the amount of pore-forming agent , and the structure of the pore-forming agent for the synthesis of mesoporous nanocrystalline TiO2 . , by changing the added amount of the block polymer , to study the impact on powder properties . studies show : using CTAB as a surfactant, to obtain a pore diameter in the range between 10-40nm hole nano TiO2 , P123 as surfactant , prepared by the pore size distribution in the 5-40nm hole nano- TiO2 surfactant CTAB and P123 prepared by the pore size distribution in the 6-35nm hole nano- TiO2 used alone compared to CTAB and P123 dual the surfactant makes more uniform powder size and arrangement , and a very wide range of the pore size distribution of the sample , larger than the surface area , pore diameter wider hole large amount . TiO2 film prepared by the CTAB and P123 two surfactants on the dye-sensitized solar cell performance . Experimental results show that : the average pore diameter about 38nm in the hole Nano TiO2 good adsorption of the dye , while increasing the specific surface area of the mesoporous nano-TiO2 , it will increase the efficiency of the battery .

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CLC: > Industrial Technology > Electrotechnical > Independent power supply technology (direct power) > Photocell > Solar cells
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