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Optical Engineering

Fe-ions implantation to modify TiO2 trilayer films for dye-sensitized solar cells
Author(s): Jun Luo; Pan Pang; Bin Liao; Wu Xianying; Xu Zhang
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Paper Abstract

A series of Fe-doped TiO2 trilayer films were prepared successfully by using the ion-implantation technique. The aim of the ion implantation was to enhance charge transfer and to reduce charge recombination. A maximum conversion efficiency of 4.86% was achieved in cells using Fe-ion-implanted electrodes with the illumination of 6×1015  atom/cm2. It is 14.1% higher than that of the cells without ion implantations. The significant improvement in conversion efficiency by Fe-ion implantation could be contributed to the enhancement of dye uptake and charge transfer, as indicated from the incident photon-to-collected electron conversion efficiency and ultraviolet-visible measurements. Furthermore, the implanted Fe-ions introduce impurity levels in the bandgap of TiO2, and this improves the electron injection efficiency from lowest unoccupied molecular orbital of excited N719 into the conduction band of TiO2.

Paper Details

Date Published: 24 June 2016
PDF: 6 pages
Opt. Eng. 55(6) 067107 doi: 10.1117/1.OE.55.6.067107
Published in: Optical Engineering Volume 55, Issue 6
Show Author Affiliations
Jun Luo, Beijing Normal Univ. (China)
Pan Pang, Beijing Normal Univ. (China)
Bin Liao, Beijing Normal Univ. (China)
Wu Xianying, Beijing Normal Univ. (China)
Xu Zhang, Beijing Normal Univ. (China)

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