Structural and photovoltaic properties of highly ordered ZnFe2O4nanotube arrays fabricated by a facile sol-gel template method

Feifei Liu, Xinyong Li, Qidong Zhao, Yang Hou, Xie Quan, Guohua Chen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

78 Citations (Scopus)

Abstract

Highly ordered ZnFe2O4nanotube arrays were successfully prepared using porous anodic aluminum oxide (AAO) template from sol-gel solution. The ZnFe2O4nanotubes are orderly arranged in parallel and each nanotube is composed of many agglutinating nanoparticles. The UV-vis absorption and surface photovoltage spectra of the ZnFe2O4nanotubes and gel powders have been compared. The photovoltaic response threshold of the ZnFe2O4nanotubes exhibited a blue-shift of about 150 nm with respect to that of the ZnFe2O4gel powder, which implies that the photogenerated charges in the nanotubes have a higher redox activity than that of the gel powder. Both materials behave like a p-type semiconductor with photogenerated electrons accumulated at their surface.
Original languageEnglish
Pages (from-to)2684-2690
Number of pages7
JournalActa Materialia
Volume57
Issue number9
DOIs
Publication statusPublished - 1 May 2009
Externally publishedYes

Keywords

  • Nanotube
  • Photovoltaic properties
  • Quantum confinement effects
  • Template synthesis
  • ZnFe O 2 4

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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