Impact of silver nanoparticles on current transport in CVD Mono-layer Graphene/Si Junctions

Badreyya Alshehhi, Ayman Rezk, Yawar Abbas, Irfan Saadat, Ammar Nayfeh, Moh'D Rezeq

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This work presents the impact and interaction of silver nanoparticles (Ag NPs) on chemical vapor deposited (CVD) mono-layer graphene-Si junctions. The vertical and lateral/surface current transport properties for different Si-substrate samples (varying top Si surface treatment) are studied using conductive mode Atomic Force Microscope (C-AFM) and micro-probe station. The presence of NPs modulates the surface conductivity of the graphene layers. Additionally, the presence of a thin 2nm Al2O3 Atomic Layer Deposition (ALD) between the Si substrate and CVD graphene film enhances the transport across the junction by providing an effective lower contact resistance for the nano-SB junction. The results indicate that the presence of cluster of NPs lowers the junction current. Whereas a single NP (nano-probe) contact enhances the localized electric field thus increasing the reverse bias tunneling current. The combination of NPs sizes and types will allow for custom tuning of the nano-SB properties for the desired applications.

Original languageBritish English
Title of host publication2019 IEEE 14th Nanotechnology Materials and Devices Conference, NMDC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728126371
DOIs
StatePublished - Oct 2019
Event14th IEEE Nanotechnology Materials and Devices Conference, NMDC 2019 - Stockholm, Sweden
Duration: 27 Oct 201930 Oct 2019

Publication series

Name2019 IEEE 14th Nanotechnology Materials and Devices Conference, NMDC 2019

Conference

Conference14th IEEE Nanotechnology Materials and Devices Conference, NMDC 2019
Country/TerritorySweden
CityStockholm
Period27/10/1930/10/19

Keywords

  • 2D materials
  • C-AFM
  • Graphene
  • Nanoparticles

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