Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode

An ultraviolet A (UVA) radiation intensity sensor with responsivity in the wavelength range of 320-360 nm was developed based on a gallium nitride (GaN) photodiode. In this sensor system, a GaN photodiode in reverse-biased mode converts the radiation intensity into current, which was then converted...

Full description

Bibliographic Details
Main Authors:	Theyirakumar .J, Gopir .G, Yatim .B, Sanusi .H, Megat Mahmud .P.S, Hoe .P.C
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2011
Online Access:	http://journalarticle.ukm.my/2441/ http://journalarticle.ukm.my/2441/ http://journalarticle.ukm.my/2441/1/06_Theyirakumar.pdf

id	ukm-2441
recordtype	eprints
spelling	ukm-24412016-12-14T06:31:37Z http://journalarticle.ukm.my/2441/ Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode Theyirakumar .J, Gopir .G, Yatim .B, Sanusi .H, Megat Mahmud .P.S, Hoe .P.C, An ultraviolet A (UVA) radiation intensity sensor with responsivity in the wavelength range of 320-360 nm was developed based on a gallium nitride (GaN) photodiode. In this sensor system, a GaN photodiode in reverse-biased mode converts the radiation intensity into current, which was then converted and amplified into an output voltage by a transimpedance amplifier (TIA), or current-voltage converter, consisting of an operational amplifier and a feedback resistor. For a narrowband UV source, the radiation intensity could be calculated from the values of the output voltage, feedback resistor, photodiode responsivity and photodiode effective area. The sensor was tested by performing measurements over different values of UV source wavelength, source distance, ambient temperature and sampling time. For calibration with a broadband UV source, the GaN-UVA sensor was used simultaneously with a standard Si-UVA sensor to measure solar radiation. The observed linear relationship between the sensors’ outputs enables us to convert the output voltage of the GaN-UVA sensor to UVA intensity. Thus, we have successfully developed, tested and calibrated an ultraviolet A radiation sensor based on the GaN photodiode. Universiti Kebangsaan Malaysia 2011-01 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/2441/1/06_Theyirakumar.pdf Theyirakumar .J, and Gopir .G, and Yatim .B, and Sanusi .H, and Megat Mahmud .P.S, and Hoe .P.C, (2011) Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode. Sains Malaysiana, 40 (1). pp. 21-25. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	An ultraviolet A (UVA) radiation intensity sensor with responsivity in the wavelength range of 320-360 nm was developed based on a gallium nitride (GaN) photodiode. In this sensor system, a GaN photodiode in reverse-biased mode converts the radiation intensity into current, which was then converted and amplified into an output voltage by a transimpedance amplifier (TIA), or current-voltage converter, consisting of an operational amplifier and a feedback resistor. For a narrowband UV source, the radiation intensity could be calculated from the values of the output voltage, feedback resistor, photodiode responsivity and photodiode effective area. The sensor was tested by performing measurements over different values of UV source wavelength, source distance, ambient temperature and sampling time. For calibration with a broadband UV source, the GaN-UVA sensor was used simultaneously with a standard Si-UVA sensor to measure solar radiation. The observed linear relationship between the sensors’ outputs enables us to convert the output voltage of the GaN-UVA sensor to UVA intensity. Thus, we have successfully developed, tested and calibrated an ultraviolet A radiation sensor based on the GaN photodiode.
format	Article
author	Theyirakumar .J, Gopir .G, Yatim .B, Sanusi .H, Megat Mahmud .P.S, Hoe .P.C,
spellingShingle	Theyirakumar .J, Gopir .G, Yatim .B, Sanusi .H, Megat Mahmud .P.S, Hoe .P.C, Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode
author_facet	Theyirakumar .J, Gopir .G, Yatim .B, Sanusi .H, Megat Mahmud .P.S, Hoe .P.C,
author_sort	Theyirakumar .J,
title	Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode
title_short	Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode
title_full	Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode
title_fullStr	Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode
title_full_unstemmed	Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode
title_sort	testing and calibration of an ultraviolet-a radiation sensor based on gan photodiode
publisher	Universiti Kebangsaan Malaysia
publishDate	2011
url	http://journalarticle.ukm.my/2441/ http://journalarticle.ukm.my/2441/ http://journalarticle.ukm.my/2441/1/06_Theyirakumar.pdf
first_indexed	2023-09-18T19:36:05Z
last_indexed	2023-09-18T19:36:05Z
_version_	1777405279800918016

Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode

Similar Items