Fe-ions implantation to modify TiO2 trilayer films for dye-sensitized solar cells

被引：3

作者：

Luo, Jun ^{[1
]}

Pang, Pan ^{[1
]}

Liao, Bin ^{[1
]}

Wu Xianying ^{[1
]}

Zhang, Xu ^{[1
]}

机构：

[1] Beijing Normal Univ, Coll Nucl Sci & Technol, Minist Educ, Key Lab Radiat Beam Technol & Mat Modificat, 12 Xue Ruan Sorthern Rd, Beijing 100875, Peoples R China

来源：

OPTICAL ENGINEERING | 2016年 / 55卷 / 06期

基金：

中国国家自然科学基金;

关键词：

ion implantation; conversion efficiency; TiO2; light harvesting; dye-sensitized solar cells; ELECTRON-TRANSPORT; PHOTOCATALYTIC ACTIVITY; THIN-FILMS; FABRICATION; SURFACE; PERFORMANCE; EFFICIENCY; CONVERSION;

D O I：

10.1117/1.OE.55.6.067107

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 x 10(15) atom/cm(2). 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. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：6

共 33 条

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