Gold nanoparticle-modulated conductivity in gold peapodded silica nanowires

Sheng Bo Wang, Ming Shien Hu, Shoou Jinn Chang, Cheong Wei Chong, Hsieh Cheng Han, Bohr Ran Huang, Li Chyong Chen, Kuei Hsien Chen

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

We report the enhanced electrical conductivity properties of single gold-peapodded amorphous silica nanowires synthesized using microwave plasma enhanced chemical vapor deposition. Dark conductivity of the gold-peapodded silica nanowires can be adjusted by controlling the number of incorporated metal nanoparticles. The temperature-dependent conductivity measurement reveals that the band tail hopping mechanism dominates the electron transport in the gold-peapodded silica nanowires. The high conductivity in the nano-peapodded nanowires with more embedded gold-nanoparticles can be explained by the higher density of hopping states and shorter hopping distance. These Au-embedded amorphous silica nanowires have provided a new approach to enhance not only the electron conduction, but also the chemical-sensor response/sensitivity.

Original languageEnglish
Pages (from-to)3660-3664
Number of pages5
JournalNanoscale
Volume4
Issue number12
DOIs
Publication statusPublished - 2012 Jun 12

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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