Temperature-dependent Spectral Emission of Hexagonal Boron Nitride Quantum Emitters on Conductive and Dielectric Substrates

Hamidreza Akbari, Wei Hsiang Lin, Benjamin Vest, Pankaj K. Jha, Harry A. Atwater

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We report a reduction in the linewidth and suppression of spectral diffusion of quantum emitters in hexagonal boron nitride supported on a conductive substrate. We observe a temperature-dependent reduction in the spectral emission linewidth for CVD-grown and exfoliated crystals on conductive ITO relative to those seen on silicon dioxide (SiO2) substrates. We show that the inhomogeneous linewidth can be suppressed by 45% as a result of using a conductive substrate. We investigate the zero-phonon line profile at temperatures ranging from 4 to 300 K and decompose the effects of thermal broadening and spectral diffusion at each temperature by Voigt fitting. The temperature dependence of homogeneous and inhomogeneous components of the broadening is discussed.

Original languageEnglish (US)
Article number014036
JournalPhysical Review Applied
Volume15
Issue number1
DOIs
StatePublished - Jan 2021
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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