Efficient Ag8GeS6 counter electrode prepared from nanocrystal ink for dye-sensitized solar cells

Qingquan He, Tianyue Qian, Jiantao Zai, Qiquan Qiao, Shoushuang Huang, Yiran Li, Min Wang

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Ternary metal sulfides could provide more alternatives and tune physicochemical properties due to the presence of two cations. However, only Co/Ni-based ternary sulfides have been explored as counter electrode (CE) materials for dye-sensitized solar cells (DSSCs). Herein, CEs fabricated using Ag8GeS6 nanocrystal ink exhibited efficient electrocatalytic activity in the reduction of I3- to I- in DSSCs. The DSSC with the Ag8GeS6 CE displayed a higher power conversion efficiency of 8.10% than that with the Pt CE (8.02%). Moreover, the devices also showed the characteristics of fast activity onset, high multiple start/stop capability and good irradiation stability. The results indicated that the developed Ag8GeS6 CE could be a promising alternative to Pt CEs in DSSCs.

Original languageEnglish (US)
Pages (from-to)20359-20365
Number of pages7
JournalJournal of Materials Chemistry A
Volume3
Issue number40
DOIs
StatePublished - 2015
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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