Vertically aligned graphene based non-cryogenic bolometer

Hazra, Kiran and Soin, Navneet ORCID: 0000-0002-0196-2071 (2013) Vertically aligned graphene based non-cryogenic bolometer. arXiv.org e-Print Archive.

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Official URL: http://arxiv.org/abs/1301.1302

Abstract

We report the photoresponse of vertically aligned graphene upon IR irradiation at room temperature. Four probe measurements have shown electrical switching in I-V characteristics during pulsed IR irradiation. The photoresponse reported here for vertically aligned graphene (VAG) is much higher than carbon nanotube (CNT) samples. Our investigation has shown that such photoresponse arise solely due to bolometric effect, where the conductivity changes with temperature. The magnitude of the resistance of VAGs increases by ~ 2 fold for 6 0C increase in temperature. Also the Thermal Coefficient of Resistance (TCR) in this region is ~11%/K, which is the highest TCR value reported so far for any carbon nanomaterials.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: University of Bolton Research Centres > Institute for Materials Research and Innovation
University of Bolton Research Centres > Institute for Materials Research and Innovation
Depositing User: Dr Navneet Soin
Date Deposited: 03 Apr 2018 14:19
Last Modified: 03 Apr 2018 14:19
URI: http://ubir.bolton.ac.uk/id/eprint/1499

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