Organic strain sensor comprised of heptazole-based thin film transistor and Schottky diode

Youngsuk Cho, Pyo Jin Jeon, Jin Sung Kim, Seongil Im

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


A strain sensor presenting a voltage signal has been studied, as comprised of an organic thin-film transistor (OTFT) and an organic Schottky diode which are connected in series to sensitively measure elastic tensile strain (up to ∼0.64%, bending radius of ∼4 mm). We chose organic heptazole TFT as a sensor component and large area heptazole Schottky diode as a strain-insensitive load incorporated into this strain sensor gauge circuit, because our heptazole TFTs have shown anisotropic response to the elastic tensile strain. Our organic strain sensor exhibits a decent amount of gauge factor (GF > 1.51) performance in both static and dynamic ways.

Original languageEnglish
Pages (from-to)24-29
Number of pages6
JournalOrganic Electronics
Publication statusPublished - 2017 Jan 1

Bibliographical note

Funding Information:
This work was supported by the Global Leading Technology Program funded by the Ministry of Trade, Industry and Energy, Republic of Korea . (Grant No. 10042433-2012-11 ), NRF (NRL Program: Grant No. 2014R1A2A1A01004815 ), and BK21 Plus program .

Publisher Copyright:
© 2016 Elsevier B.V.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering


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