Enhanced Gas Sensing of p-Type Co3O4 Nanoflowers by n-Type ZnO Nanowires

Cheng Liang Hsu, Jia Xin Gan, Han Ting Hsueh, Yi Hung Liu

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The ${p}$ -type amorphous structure Co3O4 nanoflowers are synthesized on ${n}$ -type single crystal ZnO nanowires/glass substrate by chemical bath deposition. The humidity sensing of p-n nanocomposite was exhibited the ${p}$ -type characteristics in the lower 50% RH, and revealed n-type property when RH is higher 50% RH. The p-n nanocomposite sensor was revealed good sensing ability for various organic solvents gas. Among them, ethanol is the most sensitive.

Original languageEnglish
Pages (from-to)1861-1863
Number of pages3
JournalIEEE Electron Device Letters
Issue number12
StatePublished - 1 Dec 2021


  • CoOnanoflowers
  • Gas sensor
  • n-type
  • p-type
  • ZnO nanowires


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