Preparation and DSSC Performance of Mesoporous Film Photoanodes Based on Aqueous-Synthesized Anatase Nanocrystallites

被引：20

作者：

Charbonneau, C. ^{[1
]}

Lee, K. E. ^{[1
]}

Shan, G. B. ^{[1
]}

Gomez, M. A. ^{[1
]}

Gauvin, R. ^{[1
]}

Demopoulos, G. P. ^{[1
]}

机构：

[1] McGill Univ, Montreal, PQ H3A 2B2, Canada

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2010年 / 13卷 / 08期

基金：

加拿大自然科学与工程研究理事会;

关键词：

mesoporous materials; nanofabrication; nanostructured materials; photoconductivity; photoemission; solar cells; titanium compounds; wide band gap semiconductors; SENSITIZED SOLAR-CELLS; TITANIUM-DIOXIDE; PHOTOCATALYTIC ACTIVITY; TIO2; FABRICATION; EFFICIENCY;

D O I：

10.1149/1.3429249

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this work, anatase nanocrystallites are synthesized from an aqueous titanium(IV) chloride solution by hydrolysis and are used to fabricate mesoporous TiO2 film photoanodes. The aqueous-synthesized titania nanocrystallites possess high specific surface area (250-350 m(2)/g), 4-5 nm crystallite size, enlarged bandgap, and enhanced surface hydroxylation. Current-voltage measurements of dye-sensitized solar cells (DSSCs) based on the aqueous-synthesized titania showed higher photocurrent (13.0 mA/cm(2)) and conversion efficiency (5.0%) when compared to cells built from commercial Dyesol (10.7 mA/cm(2), 4.8%) or P25 (8.5 mA/cm(2), 4.1%) benchmark nanotitania materials. The enhanced performance is discussed in terms of improved dye loading and associated electron injection and transport facilitated by the nanocrystallite surface characteristics. (C) 2010 The Electrochemical Society. [DOI: 10.1149/1.3429249] All rights reserved.

引用

页码：H257 / H260

页数：4

共 34 条

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