On The Investigations Of Chip-On-Board Ultra-Violet Sensor By Screen Printing Of Gan Powder

Khi, Poay Beh and Abdalrheem, Raed and Fong, Kwong Yam and Hassan, Zainuriah (2019) On The Investigations Of Chip-On-Board Ultra-Violet Sensor By Screen Printing Of Gan Powder. In: International Conference On Semiconductor Materials Technology.

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Abstract

In this work, the characteristics of a chip-on-board screen printed GaN UV sensor was investigated. On the sensing material, GaN powders were obtained through ammonolysis of Ga2O3 at 1000°C under NH3 flow. The XRD result revealed the polycrystalline nature of hexagonal wurtzite GaN. For the fabrication of the UV sensor platform, soft-lithography was employed in patterning a copper clad board. About 20 pairs of interdigitated electrodes with 127 m spacing were produced. For the screen printing process, GaN powder is mixed with PVP binder, subsequently deposited on the electrode pairs. The overall UV sensor showed three times of changes in sensing current upon illumination. The preliminary works showed the possibility of simple designing and fabricating process of a GaN based UV sensor.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QC Physics > QC1-999 Physics
Divisions: Institut Penyelidikan dan Teknologi Nano Optoelektronik (Institute of Nano Optoelectronics Research and Technology (INOR)) > Conference or Workshop Item
Depositing User: Mr Aizat Asmawi Abdul Rahim
Date Deposited: 13 Apr 2021 03:01
Last Modified: 13 Apr 2021 03:01
URI: http://eprints.usm.my/id/eprint/48860

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