Effect of annealing temperature on the photoelectrochemical properties of dye-sensitized solar cells made with mesoporous TiO2 nanoparticles

被引：173

作者：

Zhao, De ^{[1
]}

Peng, Tianyou ^{[1
,2
]}

Lu, Lanlan ^{[1
]}

Cai, Ping ^{[1
]}

Jiang, Ping ^{[1
]}

Bian, Zuqiang ^{[2
]}

机构：

[1] Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

[2] Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 22期

关键词：

D O I：

10.1021/jp800127x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mesoporous TiO2 (m-TiO2) nanoparticles were used to prepare the porous film electrodes for the dye-sensitized solar cells (DSSCs). The obtained m-TiO2 porous electrodes were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), electrochemical impedance spectra (EIS), and open-circuit photovoltage decay curves (OCVD). Experimental results indicate that the effect of bulk traps and the surface states within the m-TiO2 porous films on the recombination processes of the photoinjected electrons in DSSCs depends on the annealing temperature. Moreover, the homemade m-TiO2 nanoparticles show much higher photoelectric conversion efficiency than the nonporous TiO2 nanoparticles (P25). The mesostructures within the m-TiO2 nanoparticles, which can be maintained even after annealing at 500 degrees C, are of great benefit to the dye adsorption, and then to the improvement of the photoelectrochemical properties of DSSCs.

引用

页码：8486 / 8494

页数：9

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