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ICOP & ICPET 2018, 24 - : 53-56 Back to browse issues page
The Effect of Temperature on the Oxygen Sensing by Graphen
Fahimeh Zakeri * 1, Nafiseh Tobeheiha 1, Fatemeh Ostovari 1
1- Yazd University, Department of Physics
Abstract:   (253 Views)
We have synthesized graphene using Hammers' method. Then the Oxygen sensor is fabricated with qualified graphene nanosheets covered SiO2/Si wafer and Ohmic contact in tow corners. Finally, we investigate the sensitivity of it when exposed to Oxygen at ambient condition in air and at different temperatures.
A resistive graphene-based gas sensor prepared in this way revealed p-type oxygen response at room temperature. So the absorption of Oxygen molecules on it increases the carrier density and cause to increase the electrical current across it. The variations of electrical current across the sensor, when exposed to Oxygen flow, get increased by increasing temperature. 
Keywords: Oxygen sensor, graphene, sensitivity, ambient condition
Full-Text [PDF 472 kb]   (110 Downloads)    
Type of Study: Research | Subject: Special
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Zakeri F, Tobeheiha N, Ostovari F. The Effect of Temperature on the Oxygen Sensing by Graphen. ICOP & ICPET. 2018; 24 :53-56
URL: http://opsi.ir/article-1-1569-en.html


Volume 24 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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