The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor
The hydrogen sensing characteristics of undoped-AlGaN/GaN/sapphire circular Schottky diodes are systematically studied and compared over wide hydrogen concentration and temperature ranges. High purity hydrogen gas was exposed to the sample together with the ambient gas of either air or pure nitrogen...
| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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2008
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| Online Access: | http://eprints.utm.my/7617/ http://eprints.utm.my/7617/1/Hashim_Abdul_Manaf_2008_Sensing_Performance_Undoped-AlGaNGaNSapphire_HEMT.pdf |
| _version_ | 1848891504768057344 |
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| author | Mohamad, Mazuina Fong, Yee Meng Hashim, Abdul Manaf |
| author_facet | Mohamad, Mazuina Fong, Yee Meng Hashim, Abdul Manaf |
| author_sort | Mohamad, Mazuina |
| building | UTeM Institutional Repository |
| collection | Online Access |
| description | The hydrogen sensing characteristics of undoped-AlGaN/GaN/sapphire circular Schottky diodes are systematically studied and compared over wide hydrogen concentration and temperature ranges. High purity hydrogen gas was exposed to the sample together with the ambient gas of either air or pure nitrogen or without ambient gas (vacuum) at pressure in the range of 50 Torr to 200 Torr was used for both types of ambient gases. The sensing characteristics at different hydrogen concentration are investigated. The sensitivity to hydrogen gas was also investigated in dependence of various catalytic metals thickness and operating temperatures. |
| first_indexed | 2025-11-15T20:59:01Z |
| format | Conference or Workshop Item |
| id | utm-7617 |
| institution | Universiti Teknologi Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T20:59:01Z |
| publishDate | 2008 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | utm-76172017-10-09T07:33:43Z http://eprints.utm.my/7617/ The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor Mohamad, Mazuina Fong, Yee Meng Hashim, Abdul Manaf TK Electrical engineering. Electronics Nuclear engineering The hydrogen sensing characteristics of undoped-AlGaN/GaN/sapphire circular Schottky diodes are systematically studied and compared over wide hydrogen concentration and temperature ranges. High purity hydrogen gas was exposed to the sample together with the ambient gas of either air or pure nitrogen or without ambient gas (vacuum) at pressure in the range of 50 Torr to 200 Torr was used for both types of ambient gases. The sensing characteristics at different hydrogen concentration are investigated. The sensitivity to hydrogen gas was also investigated in dependence of various catalytic metals thickness and operating temperatures. 2008 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/7617/1/Hashim_Abdul_Manaf_2008_Sensing_Performance_Undoped-AlGaNGaNSapphire_HEMT.pdf Mohamad, Mazuina and Fong, Yee Meng and Hashim, Abdul Manaf (2008) The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor. In: Proceedings- 2nd Asia International on Modelling and Simulation,AMS 2008, 13-15 May 2008. http://dx.doi.org/10.1109/AMS.2008.184 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Mohamad, Mazuina Fong, Yee Meng Hashim, Abdul Manaf The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor |
| title | The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor |
| title_full | The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor |
| title_fullStr | The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor |
| title_full_unstemmed | The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor |
| title_short | The sensing performance of undoped-AlGaN/GaN/sapphire HEMT hydrogen gas sensor |
| title_sort | sensing performance of undoped-algan/gan/sapphire hemt hydrogen gas sensor |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.utm.my/7617/ http://eprints.utm.my/7617/ http://eprints.utm.my/7617/1/Hashim_Abdul_Manaf_2008_Sensing_Performance_Undoped-AlGaNGaNSapphire_HEMT.pdf |