Intensify the application of ZnO-based nanodevices in humid environment: O 2 /H 2 plasma suppressed the spontaneous reaction of amorphous ZnO nanowires

Chun Yen Lai*, Tzu Chiao Chien, Ting Yi Lin, Teng Ke, Shih Han Hsu, Yun Ju Lee, Chien ying Su, Jeng-Tzong Sheu, Ping Hung Yeh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In this work, we have demonstrated that amorphous ZnO nanobranches (a-ZnO NBs) could spontaneously react from the crystalline ZnO NWs (c-ZnO NWs) at specific humid environment. The spontaneous reaction mechanism and result can be analyzed by humidity controlling and optical microscope (OM)/scanning electron microscope (SEM)/Kelvin probe force microscopy (KPFM)/transmission electron microscopy (TEM) system. We can make the c-ZnO NWs spontaneous reaction happen at different humid environments and suppress the a-ZnO NBs spontaneous reaction by oxygen/hydrogen plasma surface passivation. The hydrogen plasma surface treatment also can improve the UV sensing sensitivity more than twofold. This work provides the mechanism and methods of the a-ZnO NBs spontaneous growth and offers the passivation treatment for strengthening and enhancing ZnO-based nanodevice application in humid environment and UV light detection, respectively.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalNanoscale Research Letters
Volume9
Issue number1
DOIs
StatePublished - 1 Jan 2014

Keywords

  • Humidity reaction
  • Plasma passivation
  • Spontaneous reaction
  • a-ZnO

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