Humidity sensor using surface adsorbed channel modulated Graphene nanoribbon: NEGF approach

Shakil, Shifur Rahman; Zohra, Fatema Tuz; Pramanik, Parna; Tushar, Raihanul Islam

Date

2015-01

Publisher

Citation

Shakil, S. R., Zohra, F. T., Pramanik, P., Tushar, R. I., Saha, A. K., & Bhuian, M. B. H. (2015). Humidity sensor using surface adsorbed channel modulated graphene nanoribbon: NEGF approach. Paper presented at the 8th International Conference on Electrical and Computer Engineering: Advancing Technology for a Better Tomorrow, ICECE 2014, 377-380. doi:10.1109/ICECE.2014.7026951

Abstract

Electronic transport properties of Graphene nanoribbon (GNR) are explored by self-consistent numerical simulation. The effects of vapour (H2O) adsorption in GNR sheets on its current-voltage (I-V) characteristics, conductivity, electrostatic difference potential and device density of states were studied with necessary physical insight. We found that conductivity of GNR sheet increases in some particular energy range with the increase in number of H2O molecules adsorbed. Then we encounter the effects of metal-GNR contact to investigate the practical performance of GNR as a medium of humidity sensing. Later we propose a simple schematic model for GNR Humidity Sensor (GNRHS) to investigate its performance in applied regime.

Keywords

GNR; GNRHS; Graphene; Humidity sensor; NEGF

Description

This conference paper was presented in theInternational Conference on Electrical and Computer Engineering, ICECE 2014; Pan Pacific Sonargaon DhakaDhaka; Bangladesh; 20 December 2014 through 22 December 2014 [© 2014 IEEE] The conference paper's definite version is available at: http://dx.doi.org/10.1109/ICECE.2014.7026951

Publisher Link

http://ieeexplore.ieee.org/document/7026951/

DOI

http://dx.doi.org/10.1109/ICECE.2014.7026951

Department

Department of Computer Science and Engineering, BRAC University

Type

Conference paper