Enhanced photovoltaic properties of TiO2 film prepared by polycondensation in sol reaction

被引：25

作者：

Hwang, Kyung-Jun ^{[1
]}

Im, Chan ^{[1
]}

Cho, Dae Won ^{[1
]}

Yoo, Seung-Joon ^{[2
]}

Lee, Jae-Wook ^{[3
]}

Shim, Wang-Geun ^{[4
]}

机构：

[1] Konkuk Univ, Konkuk Univ Fraunhofer ISE Next Generat Solar Cel, Seoul 143701, South Korea

[2] Seonam Univ, Namwon 590711, South Korea

[3] Chosun Univ, Dept Chem Engn, Kwangju 501759, South Korea

[4] Chonnam Natl Univ, Sch Appl Chem Engn, Kwangju 500757, South Korea

来源：

RSC ADVANCES | 2012年 / 2卷 / 07期

关键词：

PHOTOELECTRIC CHARACTERISTICS; FRACTAL DIMENSION; METHYLENE-BLUE; PORE VOLUME; ADSORPTION; RUTILE; ANATASE; ELECTRODES; PHASE; CELL;

D O I：

10.1039/c2ra01218a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A TiO2 film of dye-sensitized solar cells was fabricated using a TiO2 sol prepared from titanium isopropoxide as a starting material. The effect of polycondensation time and temperature on physical and chemical properties of TiO2 film shows that the crystallinity, particle size, roughness, and surface area of TiO2 film can be successfully controlled by adjusting the polycondensation time and temperature in the synthesis process of the TiO2 sol. Adsorption properties (adsorption equilibrium, isosteric enthalpies of adsorption, and adsorption energy distributions) of N719 dye molecules on the prepared TiO2 film revealed that the short circuit current (I-sc) and overall conversion efficiency (eta(eff)) are highly dependent on the crystallite size and the N719 dye adsorption properties. The TiO2 film has a pure anatase phase, high surface area including pore volume, and large anatase crystallite size and is capable of enhancing the photovoltaic performance. The energy conversion efficiency of the dye sensitized solar cells is highly dependent on the physical and chemical properties of TiO2 films.

引用

页码：3034 / 3048

页数：15

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