Journal article
Size-controlled electrochemical synthesis and properties of SnO2 nanotubes
Nanotechnology, Vol.20(18), pp.185602-185602
05/06/2009
DOI: 10.1088/0957-4484/20/18/185602
PMID: 19420618
Abstract
SnO(2) nanotubes with controlled diameter and length were synthesized using an electrochemical method at room temperature. The length and wall thickness of the nanotubes increased monotonically with the deposition time and the diameter of the nanotubes was altered by varying the pore size of the scaffolds. Post-annealing at 400 degrees C in dry air significantly improved the crystallinity while maintaining the nanotube structure. The temperature-dependent photoluminescence spectra indicated an activation energy of 58 meV for emission centered at 410 nm. The temperature-dependent electrical resistance revealed that the dominant electrical conduction mechanism alters from the ionization of the main donor centers to impurity scattering as the temperature decreases. The electrical conductance of 200 nm diameter nanotubes increased to 33 times the original value upon UV illumination at 254 nm.
Details
- Title: Subtitle
- Size-controlled electrochemical synthesis and properties of SnO2 nanotubes
- Creators
- Min Lai - Nanjing University of Information Science and TechnologyJae-Hong LimSyed Mubeen - University of California, RiversideYoungwoo Rheem - University of California, RiversideAshok Mulchandani - University of California, RiversideMarc A Deshusses - Duke UniversityNosang V Myung - University of California, Riverside
- Resource Type
- Journal article
- Publication Details
- Nanotechnology, Vol.20(18), pp.185602-185602
- DOI
- 10.1088/0957-4484/20/18/185602
- PMID
- 19420618
- ISSN
- 0957-4484
- eISSN
- 1361-6528
- Grant note
- U01ES016026 / NIEHS NIH HHS
- Language
- English
- Date published
- 05/06/2009
- Academic Unit
- Civil and Environmental Engineering; Chemical and Biochemical Engineering
- Record Identifier
- 9984197351202771
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