Optical gating of photoluminescence from color centers in hexagonal boron nitride.
dc.contributor.author | Khatri, P | |
dc.contributor.author | Ramsay, AJ | |
dc.contributor.author | Malein, RNE | |
dc.contributor.author | Chong, HMH | |
dc.contributor.author | Luxmoore, IJ | |
dc.date.accessioned | 2020-05-18T12:55:15Z | |
dc.date.issued | 2020-05-08 | |
dc.description.abstract | We report on multicolor excitation experiments with color centers in hexagonal boron nitride at cryogenic temperatures. We demonstrate controllable optical switching between bright and dark states of color centers emitting around 2eV. Resonant, or quasi-resonant excitation of photoluminescence also pumps the color center, via a two-photon process, into a dark state, where it becomes trapped. Repumping back into the bright state has a step-like spectrum with a defect dependent threshold between 2.25 and 2.6eV. This behavior is consistent with photoionization and charging between optically bright and dark states of the defect. Furthermore, a second zero phonon line, detuned by +0.4eV, is observed in absorption with orthogonal polarization to the emission, evidencing an additional energy level in the color center. | en_GB |
dc.description.sponsorship | Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
dc.identifier.citation | Available online 8 May 2020 | en_GB |
dc.identifier.doi | 10.1021/acs.nanolett.0c00751 | |
dc.identifier.grantnumber | EP/S001557/1 | en_GB |
dc.identifier.grantnumber | EP/026656/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/121078 | |
dc.language.iso | en | en_GB |
dc.publisher | American Chemical Society | en_GB |
dc.relation.url | https://www.ncbi.nlm.nih.gov/pubmed/32383892 | en_GB |
dc.rights | © 2020 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. | en_GB |
dc.subject | Color center | en_GB |
dc.subject | hexagonal boron-nitride | en_GB |
dc.subject | 2D materials | en_GB |
dc.subject | single photon source | en_GB |
dc.title | Optical gating of photoluminescence from color centers in hexagonal boron nitride. | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2020-05-18T12:55:15Z | |
dc.identifier.issn | 1530-6984 | |
exeter.place-of-publication | United States | en_GB |
dc.description | This is the final version. Available from the publisher via the DOI in this record. | en_GB |
dc.identifier.journal | Nano Letters | en_GB |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_GB |
dcterms.dateAccepted | 2020-05-08 | |
exeter.funder | ::Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
exeter.funder | ::Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2020-05-08 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2020-05-18T12:48:48Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2020-05-18T12:55:18Z | |
refterms.panel | B | en_GB |
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