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RESEARCH PRODUCT
Accidental Contamination of Substrates and Polymer Films by Organic Quantum Emitters.
Alexander HögeleStefan ThomsThomas BaschéAndre NeumannJessica Lindlausubject
chemistry.chemical_classificationMaterials sciencebusiness.industryMechanical EngineeringBioengineering02 engineering and technologyGeneral ChemistryDielectricPolymerContamination021001 nanoscience & nanotechnologyCondensed Matter PhysicsFluorescenceFluorescence spectroscopyCondensed Matter::Soft Condensed Matterchemistry.chemical_compoundchemistryOptoelectronicsGeneral Materials ScienceMethyl methacrylateThin film0210 nano-technologybusinessQuantumdescription
[Image: see text] 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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-04-15 | Nano letters |