Cathodoluminescence spectra recorded from surfaces of solids with hydrous molecules

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dc.contributor.authorGarcia-Guinea J.
dc.contributor.authorCorrecher V.
dc.contributor.authorCan N.
dc.contributor.authorGarrido F.
dc.contributor.authorTownsend P.D.
dc.date.accessioned2024-07-22T08:09:39Z
dc.date.available2024-07-22T08:09:39Z
dc.date.issued2018
dc.description.abstractModern cathodoluminescence detectors coupled to Environmental Scanning Electron Microscopes (ESEM) with X-ray microanalysis are increasingly sensitive and, nowadays, low intense luminescence spectra may be recorded from nominally non-luminescent solid materials. Structural or attached hydroxyl groups are universally present in solid samples kept in environmental conditions being potentially active luminescence emitters. Hence, we collected cathodoluminescence (CL) spectra of sixty solid materials of minerals and synthetic compounds, organics and inorganics, metallic and non-metallic, crystalline and amorphous, including widespread CL bands at circa 315 nm and 620 and 650 nm from surfaces of solids with hydroxyl and hydrous molecules. We observed as iron bearing materials, such as biotite, olivine or native iron, show appreciable cathodoluminescence spectral bands associated with hydroxyl groups (315 nm) and water molecules (620 and 650 nm), being probable precursors of non-bridging oxygen hole centers. The wide set of very different samples analyzed shows spectral similarities among separated sample types but with the only common factor of the hydrous molecules. These conclusions seem crucial for remote sensing detection of water; environmental dosimetry; degradation of phosphor materials, etc. Analyzing spectral luminescence emissions of hydrated materials it is frequent to observe erroneous interpretations of their defect-emission relationships which should be avoided. © 2018 Elsevier B.V.
dc.identifier.DOI-ID10.1016/j.elspec.2018.05.008
dc.identifier.issn03682048
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/14898
dc.language.isoEnglish
dc.publisherElsevier B.V.
dc.subjectAmorphous materials
dc.subjectIron
dc.subjectLuminescence
dc.subjectMica
dc.subjectMolecules
dc.subjectRemote sensing
dc.subjectScanning electron microscopy
dc.subjectSilicate minerals
dc.subjectWater
dc.subjectX ray detectors
dc.subjectCathodoluminescence spectra
dc.subjectEnvironmental conditions
dc.subjectEnvironmental dosimetry
dc.subjectEnvironmental scanning electron microscopes
dc.subjectHydroxyl groups
dc.subjectNonbridging oxygen hole center
dc.subjectSpectral luminescence
dc.subjectUV emissions
dc.subjectCathodoluminescence
dc.titleCathodoluminescence spectra recorded from surfaces of solids with hydrous molecules
dc.typeArticle

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