Enhanced photovoltaic performance of back-illuminated dye-sensitized solar cell based on TiO2 nanoparticle/nanowire composite film in cobalt redox system

Kyung Won Lee, Myoung Kim, Ju Mi Kim, Jeum Jong Kim, In-Hwan Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In this study, we explore the use of various ratios of TiO2 nanoparticle (NP)/nanowire (NW) composite films in back-illuminated dye-sensitized solar cells (DSSCs) based on cobalt redox couples. TiO2 NPs provided sufficient surface areas for dye adsorption and TiO2 NWs helped efficient charge transport in NP/NW composite film. Furthermore, incorporation of NWs in TiO2 film makes it more porous, relaxing the limited mass transport of cobalt redox ions. As a result, DSSCs with proper weight percentage of NW incorporated TiO2 NP/NW composite film showed a superior photovoltaic performance to DSSCs with pure TiO2 NPs film.

Original languageEnglish
Pages (from-to)568-572
Number of pages5
JournalJournal of Alloys and Compounds
Volume656
DOIs
Publication statusPublished - 2016 Jan 25
Externally publishedYes

Keywords

  • Back illumination
  • Cobalt electrolyte
  • Dye-sensitized solar cell
  • Metal foil
  • TiO nanoparticle/nanowire composite

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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