Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer
In this study, we report the photoresponse of vertically aligned few-layered graphene (VAG) upon infra-red (IR) irradiation at room temperature. Four probe measurements showed the current−voltage (I−V) characteristic of electrical switching during pulsed IR irradiation. The photo...
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MDPI AG
2019-05-01
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| Online Access: | https://www.mdpi.com/2311-5629/5/2/23 |
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| author | Anil K. Yadav Saba Mehsar Khan Anirban Kundu Renu Rani Navneet Soin James McLaughlin Devi Shanker Misra Kiran Shankar Hazra |
| author_facet | Anil K. Yadav Saba Mehsar Khan Anirban Kundu Renu Rani Navneet Soin James McLaughlin Devi Shanker Misra Kiran Shankar Hazra |
| author_sort | Anil K. Yadav |
| collection | DOAJ |
| description | In this study, we report the photoresponse of vertically aligned few-layered graphene (VAG) upon infra-red (IR) irradiation at room temperature. Four probe measurements showed the current−voltage (I−V) characteristic of electrical switching during pulsed IR irradiation. The photoresponse reported here for VAG was significantly higher than that reported for carbon nanotube (CNT) samples. Our investigation shows that such a photoresponse arose solely from the bolometric effect, where the conductivity changed with temperature. The resistance magnitude of the VAGs increased ~two fold for each 6 °C increase in temperature. Also, the Thermal Coefficient of Resistance (TCR) in this region was ~11%/K, which is the highest TCR value reported for any carbon nanomaterial. |
| first_indexed | 2024-12-14T13:52:57Z |
| format | Article |
| id | doaj.art-15005b05cf6f4219bf4d83c2f7361223 |
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| issn | 2311-5629 |
| language | English |
| last_indexed | 2024-12-14T13:52:57Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-15005b05cf6f4219bf4d83c2f73612232022-12-21T22:58:58ZengMDPI AGC2311-56292019-05-01522310.3390/c5020023c5020023Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic BolometerAnil K. Yadav0Saba Mehsar Khan1Anirban Kundu2Renu Rani3Navneet Soin4James McLaughlin5Devi Shanker Misra6Kiran Shankar Hazra7Department of Physics, Indian Institute of Technology Bombay, Mumbai 400076, IndiaInstitute of Nano Science and Technology, Habitat Centre, Phase 10, Mohali, Punjab 160062, IndiaInstitute of Nano Science and Technology, Habitat Centre, Phase 10, Mohali, Punjab 160062, IndiaInstitute of Nano Science and Technology, Habitat Centre, Phase 10, Mohali, Punjab 160062, IndiaNanotechnology and Integrated Bio-Engineering Centre, School of Engineering, University of Ulster, Jordanstown, Newtownabbey, Northern Ireland BT37 0QB, UKNanotechnology and Integrated Bio-Engineering Centre, School of Engineering, University of Ulster, Jordanstown, Newtownabbey, Northern Ireland BT37 0QB, UKDepartment of Physics, Indian Institute of Technology Bombay, Mumbai 400076, IndiaDepartment of Physics, Indian Institute of Technology Bombay, Mumbai 400076, IndiaIn this study, we report the photoresponse of vertically aligned few-layered graphene (VAG) upon infra-red (IR) irradiation at room temperature. Four probe measurements showed the current−voltage (I−V) characteristic of electrical switching during pulsed IR irradiation. The photoresponse reported here for VAG was significantly higher than that reported for carbon nanotube (CNT) samples. Our investigation shows that such a photoresponse arose solely from the bolometric effect, where the conductivity changed with temperature. The resistance magnitude of the VAGs increased ~two fold for each 6 °C increase in temperature. Also, the Thermal Coefficient of Resistance (TCR) in this region was ~11%/K, which is the highest TCR value reported for any carbon nanomaterial.https://www.mdpi.com/2311-5629/5/2/23nanosciencenanotechnologygraphenebolometer |
| spellingShingle | Anil K. Yadav Saba Mehsar Khan Anirban Kundu Renu Rani Navneet Soin James McLaughlin Devi Shanker Misra Kiran Shankar Hazra Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer C nanoscience nanotechnology graphene bolometer |
| title | Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer |
| title_full | Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer |
| title_fullStr | Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer |
| title_full_unstemmed | Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer |
| title_short | Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer |
| title_sort | vertically aligned few layered graphene based non cryogenic bolometer |
| topic | nanoscience nanotechnology graphene bolometer |
| url | https://www.mdpi.com/2311-5629/5/2/23 |
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