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Molecular Crystals and Liquid Crystals Volume 600, 2014 - Issue 1: KJF International Conference on Organic Materials for Electronics and Photonics (KJF 2013)
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Original Articles

Influence of Fe2O3 Doping on TiO2 Electrode for Enhancement Photovoltaic Efficiency of Dye-Sensitized Solar Cells

Tae Sung EomDepartment of Electrical Engineering, Gachon University, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do, Korea
,
Kyung Hwan KimDepartment of Electrical Engineering, Gachon University, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do, Korea
,
Chung Wung BarkDepartment of Electrical Engineering, Gachon University, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do, Korea
&
Hyung Wook ChoiDepartment of Electrical Engineering, Gachon University, Sujeong-Gu, Seongnam-Si, Gyeonggi-Do, KoreaCorrespondence[email protected]
Pages 39-46 | Published online: 17 Nov 2014
 
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Abstract

In this work, we report for the first time the improvement of the photovoltaic characteristics of dye-sensitized solar cells (DSSCs) by doping TiO2 with Fe2O3. DSSCs were fabricated using various percentages of Fe2O3-doped TiO2 composite nanoparticles. The Fe2O3-doped DSSCs exhibited a maximum conversion efficiency of 5.76% because of the effective electron transport. DSSCs based on Fe2O3-doped TiO2 films showed better photovoltaic performance than cells fabricated with only TiO2 nanoparticles. This result was attributed to the prevention of recombination between electrons in the TiO2 conduction band with the dye or electrolytes. A mechanism was suggested based on impedance results, which indicated improved electron transport at the interface of the TiO2/dye/electrolyte.

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