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Synthesis and characterization of Nb, F-codoped titania nanoparticles for dye-sensitized solar cells

Published online by Cambridge University Press:  23 January 2014

Mingqi Gao ,
Youlong Xu ,
Yang Bai  and
Shaohua Jin
Mingqi Gao
Affiliation:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China
Youlong Xu*
Affiliation:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China
Yang Bai
Affiliation:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China
Shaohua Jin
Affiliation:
Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, China
*
a)Address all correspondence to this author. e-mail: ylxu@mail.xjtu.edu.cn
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Abstract

Nb, F-codoped TiO2 (NFT) nanoparticles are prepared via hydrothermal processes using Nb2O5 and hydrofluoric acid as doping source. Nb and F distribute homogeneously in the NFT nanoparticles as shown in scanning transmission electron microscopy elemental mappings. The codoping of Nb and F improves the crystallinity of TiO2 significantly and increases the Ti3+ concentration, which results in the enhancement of electron injection and in the increase of the charge-transfer ability in dye-sensitized solar cells. The relative energy conversion efficiency can be 66.1% higher than that of the cell, based on pure TiO2, when the Nb:F:Ti molar ratio is about 0.03:0.15:0.97.

Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 2 , 28 January 2014 , pp. 230 - 238
Copyright
Copyright © Materials Research Society 2013 

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References

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