Issue 46, 2016
From the journal:

RSC Advances

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

Sukanta Nandi,a   Shanmukh Naidu Majjia  and  Abha Misra*a  

* Corresponding authors

a Department of Instrumentation and Applied Physics, Indian Institute of Science, Bangalore, Karnataka, India
E-mail: abha.misra1@gmail.com

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.

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

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Article information

DOI
https://doi.org/10.1039/C6RA03205B
Article type
Paper
Submitted
03 Feb 2016
Accepted
02 Apr 2016
First published
05 Apr 2016

RSC Adv., 2016,6, 40577-40584

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

S. Nandi, S. Naidu Majji and A. Misra, RSC Adv., 2016, 6, 40577 DOI: 10.1039/C6RA03205B

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