Effect of Sulfur Doped TiO2 on Photovoltaic Properties of Dye-Sensitized Solar Cells

被引：16

作者：

Seo, Hyunwoong ^{[1
]}

Nam, Sang-Hun ^{[2
]}

Itagaki, Naho ^{[1
]}

Koga, Kazunori ^{[1
]}

Shiratani, Masaharu ^{[1
]}

Boo, Jin-Hyo ^{[2
]}

机构：

[1] Kyushu Univ, Grad Sch Informat Sci & Elect Engn, Fukuoka 8190395, Japan

[2] Sungkyunkwan Univ, Dept Chem, Suwon 16419, South Korea

来源：

ELECTRONIC MATERIALS LETTERS | 2016年 / 12卷 / 04期

关键词：

sulfur doping; dye-sensitized solar cell; photovoltaic enhancement; electron lifetime; photo-conversion; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; VISIBLE-LIGHT; SEMICONDUCTOR ELECTRODE; PHOTOCATALYTIC ACTIVITY; TITANIUM-DIOXIDE; CONDUCTION-BAND; EFFICIENCY; PERFORMANCE; ARRAYS; FILMS;

D O I：

10.1007/s13391-016-4018-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In a dye-sensitized solar cell (DSC), a nano-porous semiconductor layer plays an important role in the performance. It determines open-circuit voltage and it affects the dye adsorption capacity and charge transfer, which are closely associated with photocurrent and overall performance. TiO2 is the most proper material for nano-porous layer since the first development of DSCs. This work focuses on the enhancement of TiO2 by doping. Sulfur (S) doping enhances charge transfer and the photo-conversion of TiO2. Therefore, the increase in photocurrent and efficiency is expected by S doping. S is doped into TiO2 by hydrolysis method. The amount of S is varied and their photo-responses are verified. The most effective S doped TiO2 is applied to DSCs. Overall performance of DSC is enhanced by the addition of S doped TiO2. Especially, the photocurrent is much increased by the improvement on charge transfer, electron lifetime, and photo-conversion. The photovoltaic properties of DSCs are investigated with various ratios of undoped and S doped TiO2. Finally, a DSC based on undoped and S doped TiO2 ratio of 1:1 has the highest efficiency, better than that of a standard DSC based on undoped TiO2.

引用

页码：530 / 536

页数：7

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