Issue 31, 2010
From the journal:

Journal of Materials Chemistry

Improvement efficiency of a dye-sensitized solar cell using Eu3+ modified TiO2nanoparticles as a secondary layer electrode†

Jing-Hong Huang,a   Po Yu Hung,b   Shu-Fen Hu*b  and  Ru-Shi Liu*a  

* Corresponding authors

a Department of Chemistry, National Taiwan University, Taipei
E-mail: rsliu@ntu.edu.tw

b Department of Physics, National Taiwan Normal University, Taipei
E-mail: sfhu.hu@gmail.com

Abstract

This novel work presents the successful size control of Eu3+x-modified TiO2 nanoparticles by adding various amounts of Eu3+. The electronic structures of Eu3+x-modified TiO2 nanoparticles are different from those of pure TiO2 nanoparticles, as analyzed by DRS (UV-Vis diffuse reflectance spectroscopy) and XPS (X-ray photoelectron spectroscopy). As Eu3+x-modified TiO2 nanoparticles are used as a second layer in the double-layered electrode, the probability of recombination of excited electrons and holes is reduced to increase the short-circuit current (JSC) during the operation of the dye-sensitized solar cells (DSSCs). The increase in the open circuit voltage (Voc) from 0.66 to 0.71 V is observed owing to the energy of the conduction band in Eu3+x-modified TiO2 layer. Finally, the efficiency (η) is clearly improved from 2.20 to 3.43% when the double-layered structure of Eu0.03-TiO2/Eu0-TiO2 is adopted in the DSSCs.

Graphical abstract: Improvement efficiency of a dye-sensitized solar cell using Eu3+ modified TiO2 nanoparticles as a secondary layer electrode

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Article information

DOI
https://doi.org/10.1039/C0JM00549E
Article type
Paper
Submitted
28 Feb 2010
Accepted
07 May 2010
First published
28 Jun 2010

J. Mater. Chem., 2010,20, 6505-6511

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Improvement efficiency of a dye-sensitized solar cell using Eu3+ modified TiO2 nanoparticles as a secondary layer electrode

J. Huang, P. Y. Hung, S. Hu and R. Liu, J. Mater. Chem., 2010, 20, 6505 DOI: 10.1039/C0JM00549E

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