دورية أكاديمية
أعرض في EDS

Electrically driven photon emission from individual atomic defects in monolayer WS 2 .

التفاصيل البيبلوغرافية
العنوان: Electrically driven photon emission from individual atomic defects in monolayer WS 2 .
المؤلفون: Schuler B; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA. bruno.schuler@empa.ch javier.garciadeabajo@nanophotonics.es afweber-bargioni@lbl.gov., Cochrane KA; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA., Kastl C; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA.; Walter-Schottky-Institut and Physik-Department, Technical University of Munich, Garching 85748, Germany., Barnard ES; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA., Wong E; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA., Borys NJ; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA.; Department of Physics, Montana State University, Bozeman, MT 59717, USA., Schwartzberg AM; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA., Ogletree DF; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA., de Abajo FJG; ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, 08860 Castelldefels, Barcelona, Spain. bruno.schuler@empa.ch javier.garciadeabajo@nanophotonics.es afweber-bargioni@lbl.gov.; ICREA-Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain., Weber-Bargioni A; Molecular Foundry, Lawrence Berkeley National Laboratory, CA 94720, USA. bruno.schuler@empa.ch javier.garciadeabajo@nanophotonics.es afweber-bargioni@lbl.gov.
المصدر: Science advances [Sci Adv] 2020 Sep 16; Vol. 6 (38). Date of Electronic Publication: 2020 Sep 16 (Print Publication: 2020).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 101653440 Publication Model: Electronic-Print Cited Medium: Internet ISSN: 2375-2548 (Electronic) Linking ISSN: 23752548 NLM ISO Abbreviation: Sci Adv Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Original Publication: Washington, DC : American Association for the Advancement of Science, [2015]-
مستخلص: Quantum dot-like single-photon sources in transition metal dichalcogenides (TMDs) exhibit appealing quantum optical properties but lack a well-defined atomic structure and are subject to large spectral variability. Here, we demonstrate electrically stimulated photon emission from individual atomic defects in monolayer WS 2 and directly correlate the emission with the local atomic and electronic structure. Radiative transitions are locally excited by sequential inelastic electron tunneling from a metallic tip into selected discrete defect states in the WS 2 bandgap. Coupling to the optical far field is mediated by tip plasmons, which transduce the excess energy into a single photon. The applied tip-sample voltage determines the transition energy. Atomically resolved emission maps of individual point defects closely resemble electronic defect orbitals, the final states of the optical transitions. Inelastic charge carrier injection into localized defect states of two-dimensional materials provides a powerful platform for electrically driven, broadly tunable, atomic-scale single-photon sources.
(Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).)
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تواريخ الأحداث: Date Created: 20200917 Latest Revision: 20240329
رمز التحديث: 20240329
مُعرف محوري في PubMed: PMC7494346
DOI: 10.1126/sciadv.abb5988
PMID: 32938664
قاعدة البيانات: MEDLINE
الوصف
تدمد:2375-2548
DOI:10.1126/sciadv.abb5988