Preparation and photoluminescence of highly ordered TiO 2 nanowire arrays

Y. Lei, L.D. Zhang, G.W. Meng, G.H. Li, X.Y. Zhang, C.H. Liang, Wei Chen, S.X. Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

553 Citations (Scopus)

Abstract

Highly ordered TiO 2 nanowire (TN) arrays were prepared in anodic alumina membranes (AAMs) by a sol-gel method. The TNs are single crystalline anatase phase with uniform diameters around 60 nm. At room temperature, photoluminescence (PL) measurements of the TN arrays show a visible broadband with three peaks, which are located at about 425, 465, and 525 nm that are attributed to self-trapped excitons, F, and F + centers, respectively. A model is also presented to explain the PL intensity drop-down of the TN arrays embedded in AAMs: the blue PL band of AAMs arises from the F + centers on the pore walls, and the TNs first form in the center area of the pores and then extend to the pore walls. © 2001 American Institute of Physics.
Original languageEnglish
Pages (from-to)1125-1127
Number of pages3
JournalApplied Physics Letters
Volume78
Issue number8
DOIs
Publication statusPublished - 19 Feb 2001
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this