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Effects of optical and magnetic fields on the electrical characteristics of colloidal graphene quantum dots

Nandi, Sukanta and Majji, Shanmukh Naidu and Misra, Abha (2016) Effects of optical and magnetic fields on the electrical characteristics of colloidal graphene quantum dots. In: RSC ADVANCES, 6 (46). pp. 40577-40584.

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Official URL: http://dx.doi.org/10.1039/c6ra03205b

Abstract

The effects of optical and magnetic fields have a pronounced influence on the electrical performance of graphene quantum dots (GQDs). Nonlinear current-voltage hysteresis during a voltage sweep is revealed due to the charge traps by adsorbates present on the quantum dot (QD) surface. Hence, a polarization dependent variation in QDs even in the presence of the surrounding medium presented an interesting variation in the electrical conductivity. Furthermore, a study of capacitance with frequency revealed that the microwave heating time (MHT) during the preparation of GQDs greatly affected the capacitance value of the colloidal QDs owing to size variation where larger QDs arising from a greater MHT showed lower capacitance and vice versa.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND
Department/Centre: Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Depositing User: Id for Latest eprints
Date Deposited: 15 Jun 2016 05:31
Last Modified: 15 Jun 2016 05:31
URI: http://eprints.iisc.ac.in/id/eprint/53938

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