Search results for "Thermal quenching"

showing 2 items of 2 documents

Luminescence of natural α-quartz crystal with aluminum, alkali and noble ions impurities

2019

This work was supported by the Latvian Science Council Grant No lzp-2018/1–0289 .

Materials sciencePhotoluminescenceOptically stimulated luminescenceTime resolved photoluminescenceBiophysicsAnalytical chemistrychemistry.chemical_element010502 geochemistry & geophysicsThermal quenching01 natural sciencesBiochemistryIonα-quartz0103 physical sciences:NATURAL SCIENCES:Physics [Research Subject Categories]Spontaneous emissionAluminum-one-valence ions complex0105 earth and related environmental sciences010302 applied physicsCondensed Matter - Materials ScienceGeneral ChemistryCondensed Matter PhysicsAlkali metalCopperAtomic and Molecular Physics and OpticschemistryAtomic electron transitionLuminescenceExcimer lasers
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Exciton emission and defect formation in yttrium trifluoride

2005

Two intrinsic emission bands at 220 and 280 nm have been detected in nominally pure YF3 powders at 10 K. Excitation spectra for both emissions have a sharp peak at 12 eV near the edge of interband transition. Observed emissions are assigned to the radiative decay of self-trapped excitons in YF3. The strong thermal quenching of intrinsic luminescence was observed at temperature above 120 K. It was supposed that non-radiative decay of self-trapped exciton at high temperatures lead to defect formation in YF3. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

TrifluoridechemistryIntrinsic luminescenceExcitonExcitation spectraRadiative decaychemistry.chemical_elementYttriumAtomic physicsThermal quenchingphysica status solidi (c)
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