Ga-doped zno transparent electrodes with Tio 2 blocking layer/nanoparticles for dye-sensitized solar cells

Ji Hong Kim, Kyung Ju Lee, Ji Hyung Roh, Sang Woo Song, Jae Ho Park, Inhyung Yer, Byung-Moo Moon

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Ga-doped ZnO [GZO] thin films were employed for the transparent electrodes in dyesensitized solar cells [DSSCs]. The electrical property of the deposited GZO films was as good as that of commercially used fluorine-doped tin oxide [FTO]. In order to protect the GZO and enhance the photovoltaic properties, a TiO 2 blocking layer was deposited on the GZO surface. Then, TiO 2 nanoparticles were coated on the blocking layer, and dye was attached for the electrodes of DSSCs. The fabricated DSSCs with the GZO/TiO 2 glasses showed an enhanced conversion efficiency of 4.02% compared to the devices with GZO glasses (3.36%). Furthermore, they showed even better characteristics than those using the FTO glasses, which can be attributed to the reduced charge recombination and series resistance.

Original languageEnglish
Article number11
Pages (from-to)1-12
Number of pages12
JournalNanoscale Research Letters
Volume7
DOIs
Publication statusPublished - 2012 Jan 25

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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