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Modification and Photoelectrochemical Research Based on Er/Nd-Boped TiO2 Photoanode

Author: ZhouMi
Tutor: YangYuLin
School: Harbin Institute of Technology
Course: Inorganic Chemistry
Keywords: dye-sensitized solar cell rare earth composite photoanode up-conversionluminescence near-IR absorption
CLC: TM914.4
Type: Master's thesis
Year: 2011
Downloads: 69
Quote: 0
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Abstract


The advantages of low cost and low pollution make DSSC become an importantdeveloping direction of the solar cell. Because photoanode made by nanomaterials is oneof the important component, massive research work focus on the anode material research.This paper’s main research direction is anode material doping modification, prepareingand researching the materials of the Er/Nd doped TiO2 electrode and Er、N co-doped TiO2.The paper also carried out research on the surface modification of the photoanode,contrast with the research on the photoanode without modification.Er-doped TiO2 nanoparticle with anatase has been prepared by a method sol-gel.Er-doped TiO2 has been studied by kinds of electro-optic performance tests, such asXRD、SEM、SPS、XPS and so on. The results suggested that dye-sensitized solar cellswith such Er-doped TiO2 have achieved higher conversion efficiency than that made ofpure TiO2. When the 2at% Er-doped TiO2 powder is blended with pure TiO2 as anadditive at the optimal ratio of 7:5, the photocurrent density, voltage and the conversionefficiency of the cell increase to 13.38 mA cm-2, 0.78 V and 6.63%, respectively. WhileDSSC with Nd-doped TiO2 and Er、N co-doped TiO2 have not achieved higherconversion efficiency than that made of pure TiO2.To get the purpose of raising the conversion efficiency of the DSSC, in thisexperiment we has used TiCl4 to modify the photoanode thin film s to shorten thetransmission path of photoinduced carrier and improve the structure of the cell. And inthe end, we got the purpose.

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