Structural Characterization of Atomically Thin Hexagonal Boron Nitride via Raman Spectroscopy

Abstract

A non-destruction evaluation of atomically thin hexagonal boron nitride (h-BN) films is critical to the U.S. Air Force and Department of Defense initiatives pursuing graphene-based electronic field effect transistors (FETs) capable of operating at terahertz frequencies. H-BN thin films an increase to the characteristic E2g 1367cm-1 h-BN peak intensity has been correlated to an increase in film thickness. Raman spectroscopy on a h-BN film with thicknesses of 7, 14, and 21 atoms (2.5nm, 5nm, 7.5nm respectively) revealed a linear relationship between peak intensity and thickness. This relationship can mathematically be described as y=0.0265x+0.8084, and fits the data with a R2 value of 0.9986. There was no observed correlation between film thickness and full width at half maximum (FWHM) and there was no measured shift to the E2g peak with increasing film thickness.

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Document Details

Document Type
Technical Report
Publication Date
Mar 27, 2014
Accession Number
ADA598330

Entities

People

  • James M. Bondy

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Ceramic Materials
  • Chemical Vapor Deposition
  • Crystal Lattice Vibrations
  • Department Of Defense
  • Field Effect Transistors
  • Graphene
  • High Electron Mobility Transistors
  • Lasers
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Raman Spectroscopy
  • Semiconductors
  • Spectroscopy

Fields of Study

  • Physics

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Semiconductor Device Technology
  • Spectroscopy.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene