Discretized hexagonal boron nitride quantum emitters and their chemical interconversion
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Author(s)
Kozawa, Daichi
Li, Sylvia Xin
Ichihara, Takeo
Rajan, Ananth Govind
Gong, Xun
He, Guangwei
Koman, Volodymyr B
Zeng, Yuwen
Kuehne, Matthias
Silmore, Kevin S
Date Issued
January 3, 2023
Journal
Nanotechnology
Publisher
IOP Publishing
Citation
Kozawa, Daichi, Li, Sylvia Xin, Ichihara, Takeo, Rajan, Ananth Govind, Gong, Xun et al. 2023. "Discretized hexagonal boron nitride quantum emitters and their chemical interconversion." Nanotechnology, 34 (11).
Version
Author's final manuscript
Abstract
Quantum emitters in two-dimensional hexagonal boron nitride (hBN) are of significant interest because of their unique photophysical properties, such as single-photon emission at room temperature, and promising applications in quantum computing and communications. The photoemission from hBN defects covers a wide range of emission energies but identifying and modulating the properties of specific emitters remain challenging due to uncontrolled formation of hBN defects. In this study, more than 2000 spectra are collected consisting of single, isolated zero-phonon lines (ZPLs) between 1.59 and 2.25 eV from diverse sample types. Most of ZPLs are organized into seven discretized emission energies. All emitters exhibit a range of lifetimes from 1 to 6 ns, and phonon sidebands offset by the dominant lattice phonon in hBN near 1370 cm−1. Two chemical processing schemes are developed based on water and boric acid etching that generate or preferentially interconvert specific emitters, respectively. The identification and chemical interconversion of these discretized emitters should significantly advance the understanding of solid-state chemistry and photophysics of hBN quantum emission.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
10.1088/1361-6528/aca984
