Accidental Contamination of Substrates and Polymer Films by Organic Quantum Emitters.
Photoluminescence spectroscopy
contamination of substrates and polymer matrices
fluorescence spectroscopy
organic fluorophores
single-molecule spectroscopy
single-photon emitters
Journal
Nano letters
ISSN: 1530-6992
Titre abrégé: Nano Lett
Pays: United States
ID NLM: 101088070
Informations de publication
Date de publication:
08 05 2019
08 05 2019
Historique:
pubmed:
16
4
2019
medline:
16
4
2019
entrez:
16
4
2019
Statut:
ppublish
Résumé
We report the observation of ubiquitous contamination of dielectric substrates and poly(methyl methacrylate) matrices by organic molecules with optical transitions in the visible spectral range. Contamination sites of individual solvent-related fluorophores in thin films of poly(methyl methacrylate) constitute fluorescence hotspots with quantum emission statistics and quantum yields approaching 30% at cryogenic temperatures. Our findings not only resolve prevalent puzzles in the assignment of spectral features to various nanoemitters on bare dielectric substrates or in polymer matrices but also identify the means for the simple and cost-efficient realization of single-photon sources in the visible spectral range.
Identifiants
pubmed: 30985126
doi: 10.1021/acs.nanolett.9b00712
pmc: PMC6542549
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Pagination
3207-3213Références
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