A IGZO-based light-addressable potentiometric sensor on a PET susbtrate

Chun Hui Chen, Chia Ming Yang*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

A new device on a polyethylene terephthalate (PET) substrate is proposed for light-addressable potentiometric sensor (LAPS). A Indium Gallium Zinc Oxide (IGZO) film is sputtered on the Indium Tin oxide (ITO)/PET substrate as the photosensitive semiconductor layer. A high-dielectric constant layer of NbOx is sputtered on IGZO as the sensing membrane. Photocurrent versus bias voltage curve is illustrated successfully with the ultra-violet (UV) LED illmination with ac signal modulaiton. pH sensitivity, linearity, drift and hysteresis is 68 mV/pH, 99%, 1.8 mV/h and 1.1 mV of this fabricatd device, respectively. The highest operation frequency is 30 kHz, which make it as a highly potential candidate for 2D chemical image sensor, especially first demostrated in a PET susbtrate.

Original languageEnglish
Title of host publicationFLEPS 2019 - IEEE International Conference on Flexible and Printable Sensors and Systems, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538693049
DOIs
StatePublished - 07 2019
Event1st IEEE International Conference on Flexible and Printable Sensors and Systems, FLEPS 2019 - Glasgow, United Kingdom
Duration: 07 07 201910 07 2019

Publication series

NameFLEPS 2019 - IEEE International Conference on Flexible and Printable Sensors and Systems, Proceedings

Conference

Conference1st IEEE International Conference on Flexible and Printable Sensors and Systems, FLEPS 2019
Country/TerritoryUnited Kingdom
CityGlasgow
Period07/07/1910/07/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

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