Electron injection assisted phase transition in a nano-Au-VO2 junction

Gang Xu, C. M. Huang, Masato Tazawa, Ping Jin, D. M. Chen, L. Miao

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


The semiconductor-metal transition of vanadium dioxide (VO2) thin films epitaxially grown on C-plane sapphire is studied by depositing Au nanoparticles onto the thermochromic films forming a metal-semiconductor contact, namely, a nano-Au-VO2 junction. It reveals that Au nanoparticles have a marked effect on the reduction in the phase transition temperature of VO2. A process of electron injection in which electrons flow from Au to VO2 due to the lower work function of the metal is believed to be the mechanism. The result may support the Mott-Hubbard phase transition model for VO2.

Original languageEnglish
Article number061911
JournalApplied Physics Letters
Issue number6
Publication statusPublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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