An effectual enhancement to the electrical conductivity of graphene FET by silver nanoparticles

Iqbal, Muhammad Waqas and Shahzad, Kinza and Ateeq, Hira and Aslam, Imran and Aftab, Sikandar and Azam, Sikander and Kamran, M.A. and Khan, Muhammad Farooq (2020) An effectual enhancement to the electrical conductivity of graphene FET by silver nanoparticles. Diamond and Related Materials, 106. p. 107833. ISSN 09259635

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Abstract

Electrical properties of two-dimensional materials can be effected by metal adsorbents and clusters. In this manuscript, we have reported the effects of silver (Ag)
nanoparticles on the transport properties of graphene field effect transistor with different diameter and concentrations. Raman spectroscopy is utilized to measure
doping level in graphene field effect transistor. The peak positions of G and 2D peaks after doping of Ag nanoparticles shows n-type doping in graphene. Electrical
transport properties are measured using four probe technique. N-type doping effect in graphene flakes with Ag nanoparticles is also evident from Dirac point shifting
to gate voltages below zero. Electron mobility of graphene field effect transistor is increased from 944.94 cm2 V−1 s−1 to 1430.07 cm2 V−1 s−1 with decreasing
diameter of Ag nanoparticles. The same trend is observed with increasing concentration of Ag nanoparticles. These outcomes may play dynamic role to understand
the performance of graphene-based sensing devices.

Item Type:	Article
Subjects:	Q Science > QC Physics
Divisions:	Faculty of Engineering and Applied Sciences (FEAS) > Department of Basic Sciences Lahore
Depositing User:	Dr. Waqas Iqbal
Date Deposited:	26 Dec 2020 09:32
Last Modified:	26 Dec 2020 09:32
URI:	http://research.riphah.edu.pk/id/eprint/1171

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