Electrical properties inorganic-on-organic hybrid gaas/graphene oxide schottky barrier diode

Kırsoy A., Ahmetoglu M., Okutan M., Yakuphanoglu F.

Journal of Nanoelectronics and Optoelectronics, vol.11, no.1, pp.108-114, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 1
  • Publication Date: 2016
  • Doi Number: 10.1166/jno.2016.1884
  • Journal Name: Journal of Nanoelectronics and Optoelectronics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.108-114
  • Keywords: Current-voltage, GaAs, Graphene oxide, Schottky contacts
  • Yıldız Technical University Affiliated: Yes

Abstract

Copyright © 2016 by American Scientific Publishers All rights reserved.The Au88Ge12 alloy/n-type GaAs(100)/Graphene Oxide (GO)/Au Schottky barrier diode has been fabricated. GO has been prepared by Hummers method and deposited on the GaAs substrate by spraying method. Schottky diode was investigated under dark and light intensity by the current-voltage (I-V) characteristics of the heterojunction. Thermionic current mechanism above the barrier has been detected by current-voltage measurements. It was found that the barrier height increases and the ideality factor decreases with light intensity. The obtained results indicate that GaAs/GO diode can be used as a photosensor in optoelectronic applications. Also, Schottky diode has been measured by capacitance-voltage (C-V) and conductance- voltage (G-V) in the frequency range from 10 kHz to 1 MHz at room temperature.