The Role of Mott-Schottky Heterojunctions in Ag-Ag8SnS6 as Counter Electrodes in Dye-Sensitized Solar Cells

Qingquan He; Shoushuang Huang; Cheng Wang; Qiquan Qiao; Na Liang; Miao Xu; Wenlong Chen; Jiantao Zai; Xuefeng Qian

doi:10.1002/cssc.201403343

The Role of Mott-Schottky Heterojunctions in Ag-Ag₈SnS₆ as Counter Electrodes in Dye-Sensitized Solar Cells

Qingquan He, Shoushuang Huang, Cheng Wang, Qiquan Qiao, Na Liang, Miao Xu, Wenlong Chen, Jiantao Zai, Xuefeng Qian

Research output: Contribution to journal › Article › peer-review

65 Scopus citations

Abstract

Well-defined uniform pyramidal Ag-Ag₈SnS₆ heterodimers are prepared via a one-pot method. A plausible formation mechanism for the unique structures based on a seed-growth process and an etching effect due to oleylamine is proposed. The formed metal-semiconductor Mott-Schottky heterojunction promotes electron transfer from semiconducting Ag₈SnS₆ to metallic Ag, which catalyzes the reduction of I₃^- to I^-. When used as counter electrode in dye-sensitized solar cells, the heterodimers show comparable performance to platinum.

Original language	English (US)
Pages (from-to)	817-820
Number of pages	4
Journal	ChemSusChem
Volume	8
Issue number	5
DOIs	https://doi.org/10.1002/cssc.201403343
State	Published - Mar 2015
Externally published	Yes

Keywords

catalysis
dye-sensitized solar cells
electron transfer
energy conversion
silver

ASJC Scopus subject areas

Environmental Chemistry
General Chemical Engineering
General Materials Science
General Energy

Access to Document

10.1002/cssc.201403343

Cite this

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title = "The Role of Mott-Schottky Heterojunctions in Ag-Ag8SnS6 as Counter Electrodes in Dye-Sensitized Solar Cells",

abstract = "Well-defined uniform pyramidal Ag-Ag8SnS6 heterodimers are prepared via a one-pot method. A plausible formation mechanism for the unique structures based on a seed-growth process and an etching effect due to oleylamine is proposed. The formed metal-semiconductor Mott-Schottky heterojunction promotes electron transfer from semiconducting Ag8SnS6 to metallic Ag, which catalyzes the reduction of I3- to I-. When used as counter electrode in dye-sensitized solar cells, the heterodimers show comparable performance to platinum.",

keywords = "catalysis, dye-sensitized solar cells, electron transfer, energy conversion, silver",

author = "Qingquan He and Shoushuang Huang and Cheng Wang and Qiquan Qiao and Na Liang and Miao Xu and Wenlong Chen and Jiantao Zai and Xuefeng Qian",

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AU - He, Qingquan

AU - Huang, Shoushuang

AU - Wang, Cheng

AU - Qiao, Qiquan

AU - Liang, Na

AU - Xu, Miao

AU - Chen, Wenlong

AU - Zai, Jiantao

AU - Qian, Xuefeng

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AB - Well-defined uniform pyramidal Ag-Ag8SnS6 heterodimers are prepared via a one-pot method. A plausible formation mechanism for the unique structures based on a seed-growth process and an etching effect due to oleylamine is proposed. The formed metal-semiconductor Mott-Schottky heterojunction promotes electron transfer from semiconducting Ag8SnS6 to metallic Ag, which catalyzes the reduction of I3- to I-. When used as counter electrode in dye-sensitized solar cells, the heterodimers show comparable performance to platinum.

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KW - electron transfer

KW - energy conversion

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