Abstract
The thickness effect of In-Ga-Zn oxide (IGZO) semiconductor layer is investigated for pH sensing in light-addressable potentiometric sensor (LAPS). pH sensing membrane is 45 nm-thick NbOx, which is directly on IGZO/ITO/glass substrate. The thickness of IGZO layer is determined by time-mode control in reactive rf sputtering. The highest photovoltage and operation frequency can be obtained in the IGZO thickness of 300 nm. pH sensitivity is about 65 mV/pH with ac signal frequency at 1 kHz. For better stability in hysteresis, further investigations on sensing membrane optimization are suggested.
| Original language | English |
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| Title of host publication | Proceedings of AM-FPD 2016 - 23rd International Workshop on Active-Matrix Flatpanel Displays and Devices |
| Subtitle of host publication | TFT Technologies and FPD Materials |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 203-205 |
| Number of pages | 3 |
| ISBN (Electronic) | 9784990875312 |
| DOIs | |
| State | Published - 15 08 2016 |
| Event | 23rd International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2016 - Kyoto, Japan Duration: 06 07 2016 → 08 07 2016 |
Publication series
| Name | Proceedings of AM-FPD 2016 - 23rd International Workshop on Active-Matrix Flatpanel Displays and Devices: TFT Technologies and FPD Materials |
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Conference
| Conference | 23rd International Workshop on Active-Matrix Flatpanel Displays and Devices, AM-FPD 2016 |
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| Country/Territory | Japan |
| City | Kyoto |
| Period | 06/07/16 → 08/07/16 |
Bibliographical note
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