Improved conversion efficiency in dye-sensitized solar cells based on electrospun Al-doped ZnO nanofiber electrodes prepared by seed layer treatment

被引:69
作者
Yun, Sining [1 ]
Lim, Sangwoo [2 ]
机构
[1] Xian Univ Architecture & Technol, Sch Mat Sci & Engn, Xian 710055, Peoples R China
[2] Yonsei Univ, Dept Chem & Biomol Engn, Seoul 120749, South Korea
关键词
AZO nanofibers; Electrospinning; Dye-sensitized solar cells; AZO seed layer; ZINC-OXIDE; NANOWIRE ARRAYS; FILMS; SPECTROSCOPY; FABRICATION; TRANSPORT; HYDROGEN;
D O I
10.1016/j.jssc.2010.11.024
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The application of electrospun nanofibers in electronic devices is limited due to their poor adhesion to conductive substrates. To improve this, a seed layer (SD) is introduced on the FTO substrate before the deposition of the electrospun composite nanofibers. This facilitates the release of interfacial tensile stress during calcination and enhances the interfacial adhesion of the AZO nanofiber films with the FTO substrate. Dye-sensitized solar cells (DSSC) based on these AZO nanofiber photoelectrodes have been fabricated and investigated. An energy conversion efficiency (eta) of 0.54-0.55% has been obtained under irradiation of AM 1.5 simulated sunlight (100 mW/cm(2)), indicating a massive improvement of eta in the AZO nanofiber film DSSCs after SD-treatment of the FTO substrate as compared to those with no treatment. The SD-treatment has been demonstrated to be a simple and facile method to solve the problem of poor adhesion between electrospun nanofibers and the conductive substrate. (C) 2010 Elsevier Inc. All rights reserved.
引用
收藏
页码:273 / 279
页数:7
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