Gas permeable silver nanowire electrode for realizing vertical type sensitive gas sensor

Ming Yen Chuang, Hsiao-Wen Zan*, Pei-Chen Yu, Yi Chun Lai, Hsin-Fei Meng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We successfully demonstrated a Poly (3-hexylthiophene) (P3HT) diode gas sensor with silver nanowires as a gas permeable top electrode. The silver nanowires dispersed in isopropyl alcohol (IPA) were used to form a top electrode by a simple drop-casting method. The meshes between nanowires enable gas molecules pass through the electrode and diffuse into the underlying organic sensing layer to dope or dedope the organic semiconductor. Here, the proposed sensor successfully detects ammonia down to 30 parts-per-billion (ppb), which is sensitive enough in many applications including breath ammonia monitoring as a point-of-care application.

Original languageEnglish
Pages (from-to)2769-2774
Number of pages6
JournalOrganic Electronics
Volume15
Issue number11
DOIs
StatePublished - 1 Jan 2014

Keywords

  • Ammonia
  • Gas sensor
  • P3HT
  • Silver nanowire
  • Vertical

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