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 language | English |
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Title of host publication | FLEPS 2019 - IEEE International Conference on Flexible and Printable Sensors and Systems, Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781538693049 |
DOIs | |
State | Published - 07 2019 |
Event | 1st IEEE International Conference on Flexible and Printable Sensors and Systems, FLEPS 2019 - Glasgow, United Kingdom Duration: 07 07 2019 → 10 07 2019 |
Publication series
Name | FLEPS 2019 - IEEE International Conference on Flexible and Printable Sensors and Systems, Proceedings |
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Conference
Conference | 1st IEEE International Conference on Flexible and Printable Sensors and Systems, FLEPS 2019 |
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Country/Territory | United Kingdom |
City | Glasgow |
Period | 07/07/19 → 10/07/19 |
Bibliographical note
Publisher Copyright:© 2019 IEEE.