Size-dependent photoconductance in SnO2 nanowires

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

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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 languageEnglish
Pages (from-to)713-717
Number of pages5
JournalSmall
Volume1
Issue number7
DOIs
Publication statusPublished - 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