Tandem Dye-sensitized Solar Cell Based on Metal Mesh

doi:10.3724/SP.J.1077.2011.11015

Journal of Inorganic Materials ›› 2011, Vol. 26 ›› Issue (7): 774-778.DOI: 10.3724/SP.J.1077.2011.11015

• Research Letter • Previous Articles Next Articles

Tandem Dye-sensitized Solar Cell Based on Metal Mesh

HUANG Yi-Min, LIU Zhi-Yong, WANG Xiao-Qi, LU Yu-Ming, CAI Chuan-Bing

(Physics Department, Shanghai University, Shanghai 200444, China)

Received:2011-01-04 Revised:2011-02-25 Published:2011-07-20 Online:2011-06-20
About author:HUANG Yi-Min(1986-), female, candidate of master. E-mail: adowntour@gmail.com
Supported by:
National Natural Science Foundation of China (50702033, 10774098); Project of Science and Technology Commission of Shanghai Municipality (0752nm017, 08521101502)

Abstract

Abstract: A newly structured tandem dye-sensitized solar cell (tandem DSC) based on stainless mesh was introduced, in which the electrode constituted a first TiO₂film on TCO and a second TiO₂ film on stainless mesh. Negative interaction between different dyes in this structure is less than that by normal method of cocktail-dyes dipping. The application of stainless mesh here reduces the loss of incident light, solves the problem of electronic connection between two different TiO₂ films, as well as improves electron transport and collection. This tandem cell achieved a power conversion efficiency of 1.96% with short circuit current density of 8.4mA/cm². Compared with normal mono-layer DSC with similar cell thickness, efficiency was improved about 62% by this tandem structure. Electrochemical impedance spectroscope (EIS) was used to analyze the electron transport in tandem DSC, and an equivalent circuit for tandem DSC was also proposed here. Meanwhile, the increased cell thickness and electron recombination on the surface of the stainless mesh have obvious influence on the photovoltaic performance.

Key words: tandem, dye-sensitized solar cell, metal mesh

CLC Number:

TM914

HUANG Yi-Min, LIU Zhi-Yong, WANG Xiao-Qi, LU Yu-Ming, CAI Chuan-Bing. Tandem Dye-sensitized Solar Cell Based on Metal Mesh[J]. Journal of Inorganic Materials, 2011, 26(7): 774-778.

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Tandem Dye-sensitized Solar Cell Based on Metal Mesh

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