Functional multilayered transparent conducting oxide thin films for photovoltaic devices

Jun Hong Noh, Sangwook Lee, Jin Young Kim, Jung Kun Lee, Hyun Soo Han, Chin Moo Cho, In Sun Cho, Hyun Suk Jung, Kug Sun Hong

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


In this study, we present a thermally stable multilayered transparent conducting oxide (TCO) functionalized for dye-sensitized solar cells (DSSCs). Nb-doped TiO 2 (NTO) layers deposited on conventional Sn-doped In 2O 3 (ITO) substrates using pulsed laser deposition (PLD) enhanced the optical-to-electrical conversion efficiency of the DSSCs by as much as 17% compared to that of bare ITO-based DSSCs. The electrical properties and J - V characteristics of the multilayered NTO/ITO films showed that the improved cell performance was due to the facilitated charge injection from TiO 2 to ITO that resulted from the formation of an ohmic contact with ITO, as well as the conserved high conductivity of ITO after the oxidizing annealing process. Moreover, the NTO/ITO-based DSSC exhibited higher efficiency than a F-doped SnO 2(FTO)-based one, which demonstrates that optimization of multilayered NTO-based TCOs is a realistic approach for achieving highly efficient photoenergy conversion devices.

Original languageEnglish
Pages (from-to)1083-1087
Number of pages5
JournalJournal of Physical Chemistry C
Issue number3
Publication statusPublished - 2009 Jan 22
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films


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