Electron paramagnetic resonance signature of point defects in neutron-irradiated hexagonal boron nitride

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dc.creatorJosé Roberto de Toledo
dc.creatorDaniel Batista de Jesus
dc.creatorMehran Kianinia
dc.creatorCristiano Fantini Leite
dc.creatorLuiz Alberto Cury
dc.creatorGustavo de Almeida Magalhães Sáfar
dc.creatorIgor Aharonovich
dc.creatorKlaus Wilhelm Heinrich Krambrock
dc.creatorAlexandre Soares Leal
dc.date.accessioned2025-02-24T18:07:19Z
dc.date.accessioned2025-09-09T00:46:08Z
dc.date.available2025-02-24T18:07:19Z
dc.date.issued2018
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.98.155203
dc.identifier.issn2469-9969
dc.identifier.urihttps://hdl.handle.net/1843/80356
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review B
dc.rightsAcesso Restrito
dc.subjectRessonância paramagnética eletrônica
dc.subject.otherPoint defects
dc.subject.otherElectron paramagnetic resonance
dc.titleElectron paramagnetic resonance signature of point defects in neutron-irradiated hexagonal boron nitride
dc.typeArtigo de periódico
local.citation.epage155203-6
local.citation.issue15
local.citation.spage155203-1
local.citation.volume98
local.description.resumoHexagonal boron nitride (h-BN) is an attractive van der Waals material for studying fluorescent defects due to its large band gap. In this work, we demonstrate enhanced pink color due to neutron irradiation and perform electron paramagnetic resonance (EPR) measurements. The point defects are tentatively assigned to doubly occupied nitrogen vacancies with (𝑆=1) and a zero-field splitting (𝐷=1.2GHz). These defects are associated with a broad visible optical absorption band and a near-infrared photoluminescence band centered at ∼490 and 820 nm, respectively. The EPR signal intensities are strongly affected by thermal treatments in the temperature range between 600 °C and 800 °C, where also the irradiation-induced pink color is lost. Our results are important for understanding of point defects in h-BN and their deployment for quantum and integrated photonic applications.
local.identifier.orcidhttps://orcid.org/0000-0001-9785-0279
local.identifier.orcidhttps://orcid.org/0000-0003-4073-1492
local.identifier.orcidhttps://orcid.org/0000-0003-0436-7857
local.identifier.orcidhttps://orcid.org/0000-0002-0763-4431
local.identifier.orcidhttps://orcid.org/0000-0003-1354-3138
local.identifier.orcidhttps://orcid.org/0000-0003-4304-3935
local.identifier.orcidhttps://orcid.org/0000-0002-7562-0285
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.98.155203

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