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Preparation and photoluminescence of highly ordered TiO[sub 2] nanowire arrays.
- Source :
-
Applied Physics Letters . 2/19/2001, Vol. 78 Issue 8, p1125. 3p. 2 Diagrams, 2 Graphs. - Publication Year :
- 2001
-
Abstract
- Highly ordered TiO[sub 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[sup +] 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[sup +] 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHOTOLUMINESCENCE
*NANOWIRES
Subjects
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 78
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 4710831
- Full Text :
- https://doi.org/10.1063/1.1350959