Efficient Inorganic-organic heterojunction solar cells employing Sb 2(Sx/Se1-x)3 graded-composition sensitizers

Yong Chan Choi, Yong Hui Lee, Sang Hyuk Im, Jun Hong Noh, Tarak Nath Mandal, Woon Seok Yang, Sang I. Seok

Research output: Contribution to journalArticlepeer-review

93 Citations (Scopus)


A Sb2(S1-x/Sex)3 graded-composition is obtained by a sequential deposition of Sb 2S3 and Sb2Se3 onto a mesoporous TiO2 photoelectrode followed by thermal annealing at 300 C. The compositional graded-solar cells exhibit a greatly enhanced performance compared to pristine Sb2S3-sensitized or Sb2Se 3-sensitized solar cells. The best performing cell, delivering an incident-photon-to-current efficiency extended to 1050 nm, exhibits an overall power conversion efficiency of 6.6% under simulated illumination.

Original languageEnglish
Article number1301680
JournalAdvanced Energy Materials
Issue number7
Publication statusPublished - 2014 May 13
Externally publishedYes


  • graded composition
  • heterojunction solar cells

ASJC Scopus subject areas

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


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