Size-dependent photoconductance in SnO2 nanowires

Sanjay Mathur; Sven Barth; Hao Shen; Jae Chul Pyun; Ulf Werner

doi:10.1002/smll.200400168

Size-dependent photoconductance in SnO₂ nanowires

Sanjay Mathur, Sven Barth, Hao Shen, Jae Chul Pyun, Ulf Werner

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

255 Citations (Scopus)

Abstract

The synthesis and characterization of SnO₂ wires, coins, and ribbons by vapor transport synthesis at elevated temperatures has been offered for the improvements as the nanowires, tubes, or rods display the lowest dimensionability for electron transport. The tin oxide nanowires were obtained by ablating a metallic tin target with an Nd:YAG laser under an O₂/Ar atmosphere. The gaseous species liberated during the chemical vapor growth of SnO₂ nanowires were characterized by on-line mass spectrometric analysis. The growth of tin oxide nanowires follows vapor-liquid-solid (VLS) mechanism, where the VLS model requires the alloying of a metal catalysts with nanowire component for growing quasi-one-dimensional nanostructures. The photoconductance of SnO₂ NWs offers a strong modulation that dependends on the average radical dimensions. The results show that stable photoresponse of samples demonstrate their potential for applications in UV detectors.

Original language	English
Pages (from-to)	713-717
Number of pages	5
Journal	Small
Volume	1
Issue number	7
DOIs	https://doi.org/10.1002/smll.200400168
Publication status	Published - 2005 Jul 1

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All Science Journal Classification (ASJC) codes

Biotechnology
Biomaterials
Chemistry(all)
Materials Science(all)

Cite this

Mathur, S., Barth, S., Shen, H., Pyun, J. C., & Werner, U. (2005). Size-dependent photoconductance in SnO₂ nanowires. Small, 1(7), 713-717. https://doi.org/10.1002/smll.200400168

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10.1002/smll.200400168