Down-converting lanthanide doped TiO2 photoelectrodes for efficiency enhancement of dye-sensitized solar cells

被引：133

作者：

Hafez, H. ^{[2
]}

Saif, M. ^{[1
]}

Abdel-Mottaleb, M. S. A. ^{[3
]}

机构：

[1] Ain Shams Univ, Fac Educ, Dept Chem, Cairo, Egypt

[2] Minoufiya Univ, ESRI, Sadat Branch, Sadat City, Egypt

[3] Ain Shams Univ, Fac Sci, Dept Chem, Nanophotochem & Solarchem Lab, Cairo 11566, Egypt

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 13期

关键词：

Dye-sensitized solar cells; Lanthanide ions; Down-conversion; PHOTOCATALYTIC ACTIVITY; LUMINESCENCE PROPERTIES; EU; PHOTOLUMINESCENCE; ELECTROLYTE; PERFORMANCE; NANOTUBES; IONS; TB; SM;

D O I：

10.1016/j.jpowsour.2011.02.031

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：

Lanthanide (Ln(3+)) doped TiO2 down-conversion photoelectrodes (Ln(3+) = Eu3+ and Sm3+ ions) are used to enhance the photovoltaic efficiency of dye-sensitized solar cells (DSSC). We report on achieving fill factors of 0.67 and 0.69 and efficiencies of 5.81% and 5.16% for Sm3+ and Eu3+, respectively. This is compared to the 4.23% efficiency for the undoped-titania photoelectrodes. This enhancement is probably due to the improved UV radiation harvesting via a down-conversion luminescence process by the lanthanide ions. The structure, optical and photoluminescence properties of the down-converting photoelectrode are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray (EDX) and room temperature photoluminescence excitation and emission spectrofluorimetric measurements. (C) 2011 Elsevier B.V. All rights reserved.

引用

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页码：5792 / 5796

页数：5

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