Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer
AbstractIn 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.
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Yadav, A.K.; Khan, S.M.; Kundu, A.; Rani, R.; Soin, N.; McLaughlin, J.; Misra, D.S.; Hazra, K.S. Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer. C 2019, 5, 23.
Yadav AK, Khan SM, Kundu A, Rani R, Soin N, McLaughlin J, Misra DS, Hazra KS. Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer. C. 2019; 5(2):23.Chicago/Turabian Style
Yadav, Anil K.; Khan, Saba Mehsar; Kundu, Anirban; Rani, Renu; Soin, Navneet; McLaughlin, James; Misra, Devi Shanker; Hazra, Kiran Shankar. 2019. "Vertically Aligned Few-Layered Graphene-Based Non-Cryogenic Bolometer." C 5, no. 2: 23.
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