The blocking effect of charge recombination by sputtered and acid-treated ZnO thin film in dye-sensitized solar cells

Hyunwoong Seo, Min Kyu Son, Songyi Park, Hee Je Kim, Masaharu Shiratani

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Compact layer preventing the charge recombination has much attention in studies on efficiency enhancement of dye-sensitized solar cells (DSCs). Especially, the charge recombination at the interface between transparent conductive oxide (TCO) and an electrolyte plays an important role due to bad contact of TCO/TiO 2 interface. Although TiO 2 has been widely adopted as a source of the compact layer, ZnO compact layer was investigated in this study because of its unique properties. ZnO thin film was deposited by Zn sputtering without O 2 gas in particular. For the sufficient oxidization of Zn film, the acid treatment was introduced and the thickness of the compact layer was controlled. As a result, the overall performance was much increased from 6.20% to 7.81% by the acid treatment and the thickness control of the compact layer.

Original languageEnglish
Pages (from-to)50-54
Number of pages5
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume248
DOIs
Publication statusPublished - Nov 15 2012

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Physics and Astronomy(all)

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