Exploring the structural and optoelectronic properties of natural insulating phlogopite in van der Waals heterostructures

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dc.creatorAlisson Ronieri Cadore
dc.creatorÂngelo Malachias de Souza
dc.creatorKlaus Wilhelm Heinrich Krambrock
dc.creatorIngrid David Barcelos
dc.creatorChristiano José Santiago de Matos
dc.creatorRaphaela de Oliveira Gonçalves
dc.creatorRaphael Longuinhos Monteiro Lobato
dc.creatorVerônica de Carvalho Teixeira
dc.creatorDanilo Argentoni Nagaoka
dc.creatorVinicius Tadin Alvarenga
dc.creatorJenaina Ribeiro Soares
dc.creatorKenji Watanabe
dc.creatorTakashi Taniguchi
dc.creatorRoberto Magalhães Paniago
dc.date.accessioned2025-02-24T19:05:44Z
dc.date.accessioned2025-09-09T00:44:02Z
dc.date.available2025-02-24T19:05:44Z
dc.date.issued2022
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.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.description.sponsorshipFAPESP - Fundação de Amparo à Pesquisa do Estado de São Paulo
dc.identifier.doihttps://doi.org/10.1088/2053-1583/ac6cf4
dc.identifier.issn2053-1583
dc.identifier.urihttps://hdl.handle.net/1843/80376
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartof2D Materials
dc.rightsAcesso Restrito
dc.subjectOptoeletrônica
dc.subjectForças de van der Waals
dc.subject.otherPhlogopite
dc.subject.other2D materials
dc.subject.otherNatural insulating
dc.subject.otherOptoelectronics
dc.titleExploring the structural and optoelectronic properties of natural insulating phlogopite in van der Waals heterostructures
dc.typeArtigo de periódico
local.citation.epage15
local.citation.issue3
local.citation.spage1
local.citation.volume9
local.description.resumoNaturally occurring van der Waals crystals have brought unprecedented interest to nanomaterial researchers in recent years. So far, more than 1800 layered materials (LMs) have been identified but only a few insulating and naturally occurring LMs were deeply investigated. Phyllosilicate minerals, which are a class of natural and abundant LMs, have been recently considered as a low-cost source of insulating nanomaterials. Within this family an almost barely explored material emerges: phlogopite (KMg3(AlSi3)O10(OH)2). Here we carry out a high throughput characterization of this LM by employing several experimental techniques, corroborating the major findings with first-principles calculations. We show that monolayers (1L) and few-layers of this material are air and temperature stable, as well as easily obtained by the standard mechanical exfoliation technique, have an atomically flat surface, and lower bandgap than its bulk counterpart, an unusual trend in LMs. We also systematically study the basic properties of ultrathin phlogopite and demonstrate that natural phlogopite presents iron impurities in its crystal lattice, which decreases its bandgap from about 7 eV to 3.6 eV. Finally, we combine phlogopite crystals with 1L-WS2 in ultrathin van der Waals heterostructures and present a photoluminescence study, revealing a significant enhancement on the 1L-WS2 optical quality (i.e. higher recombination efficiency through neutral excitons) similarly to that obtained on 1L-WS2/hexagonal boron nitride heterostructures. Our proof-of-concept study shows that phlogopite should be regarded as a good and promising candidate for LM-based applications as a low-cost layered nanomaterial.
local.identifier.orcidhttps://orcid.org/0000-0003-1081-0915
local.identifier.orcidhttps://orcid.org/0000-0002-8703-4283
local.identifier.orcidhttps://orcid.org/0000-0002-7562-0285
local.identifier.orcidhttps://orcid.org/0000-0002-5778-7161
local.identifier.orcidhttps://orcid.org/0000-0001-6165-3791
local.identifier.orcidhttps://orcid.org/0000-0003-1391-6694
local.identifier.orcidhttps://orcid.org/0000-0003-1615-4672
local.identifier.orcidhttps://orcid.org/0000-0003-2999-2800
local.identifier.orcidhttps://orcid.org/0000-0003-1976-4062
local.identifier.orcidhttps://orcid.org/0000-0001-7416-476X
local.identifier.orcidhttps://orcid.org/0000-0001-9248-2243
local.identifier.orcidhttps://orcid.org/0000-0003-3701-8119
local.identifier.orcidhttps://orcid.org/0000-0002-0540-7163
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://iopscience.iop.org/article/10.1088/2053-1583/ac6cf4

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