A flexible sensor based on polyaniline hybrid using ZnO as template and sensing properties to triethylamine at room temperature

Le Quan, Jianhua Sun, Shouli Bai, Ruixian Luo, Dianqing Li, Aifan Chen, Chung Chiun Liu

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

A network structure of PANI/SnO 2 hybrid was synthesized by an in situ chemical oxidative polymerization using cheaper ZnO nanorods as sacrificial template and the hybrid was loaded on a flexible polyethylene terephthalate (PET) thin film to construct a flexible smart sensor. The sensor not only exhibits high sensitivity which is 20 times higher than that of pure PANI to 10 ppm triethylamine, good selectivity and linear response at room temperature but also has flexible, structure simple, economical and portable characters compared with recently existing sensors. Room temperature operating of the sensor is also particularly interesting, which leads to low power consumption, environmental safety and long life times. The improvement of sensing properties is attributed to the network structure of hybrid and formation of p-n heterojunction at the interface between the PANI and SnO 2 . The research is expected to open a new window for development of a kind of wearable electronic devices based on the hybrid of conducting polymer and metal oxides.

Original languageEnglish
Pages (from-to)583-591
Number of pages9
JournalApplied Surface Science
Volume399
DOIs
StatePublished - 31 Mar 2017

Keywords

  • p-n junction
  • Polyaniline
  • Polyethylene terephthalate substrate
  • SnO
  • ZnO sacrificial template

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