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

Akbari, Hamidreza and Lin, Wei-Hsiang and Vest, Benjamin and Jha, Pankaj K. and Atwater, Harry A. (2021) Temperature-dependent Spectral Emission of Hexagonal Boron Nitride Quantum Emitters on Conductive and Dielectric Substrates. Physical Review Applied, 15 (1). Art. No. 014036. ISSN 2331-7019. https://resolver.caltech.edu/CaltechAUTHORS:20210121-101410749

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/physrevapplied.15.014036DOIArticle
ORCID:
AuthorORCID
Akbari, Hamidreza0000-0002-6073-3885
Lin, Wei-Hsiang0000-0003-0037-1277
Vest, Benjamin0000-0003-3640-4560
Jha, Pankaj K.0000-0002-5839-3391
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2021 American Physical Society. (Received 12 October 2020; revised 4 December 2020; accepted 9 December 2020; published 20 January 2021) This work is supported by the “Photonics at Thermodynamic Limits” Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0019140. We thank Phillip Jahelka for the discussion and Komron Shayegan and Arun Nagpal for feedback on the paper.
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0019140
Issue or Number:1
Record Number:CaltechAUTHORS:20210121-101410749
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210121-101410749
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107627
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:21 Jan 2021 20:42
Last Modified:21 Jan 2021 20:42

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