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 journalArticlepeer-review

51 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 languageEnglish (US)
Pages (from-to)817-820
Number of pages4
JournalChemSusChem
Volume8
Issue number5
DOIs
StatePublished - Mar 2015
Externally publishedYes

Keywords

  • catalysis
  • dye-sensitized solar cells
  • electron transfer
  • energy conversion
  • silver

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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