Mechanisms behind blue, green, and red photoluminescence emissions in CaWO4 and CaMoO4 powders

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade Federal de São Carlos (UFSCar)
dc.contributorUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:23:20Z
dc.date.accessioned2022-10-05T16:21:31Z
dc.date.available2014-05-20T15:23:20Z
dc.date.available2022-10-05T16:21:31Z
dc.date.created2014-05-20T15:23:20Z
dc.date.issued2007-07-30
dc.identifierApplied Physics Letters. Melville: Amer Inst Physics, v. 91, n. 5, 3 p., 2007.
dc.identifier0003-6951
dc.identifierhttp://hdl.handle.net/11449/34141
dc.identifier10.1063/1.2766856
dc.identifierWOS:000248595800051
dc.identifierWOS000248595800051.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3906333
dc.description.abstractA combined experimental and theoretical study was conducted to analyze the photoluminescence (PL) properties of ordered and disordered CaWO4 (CW) and CaMoO4 (CM) powders. Two mechanisms were found to be responsible for photoluminescence emission in CW and CM powders. The first one, in the disordered powders, was caused by oxygen complex vacancies [MO3 center dot V-O(x)], [MO3 center dot V-O(center dot)] and [MO3 center dot V-O(center dot center dot)], where M=W or Mo, which leads to additional levels in the band gap. The second mechanism, in ordered powders, was caused by an intrinsic slight distortion of the [WO4] or [MoO4] tetrahedral in the short range. (c) 2007 American Institute of Physics.
dc.languageeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relationApplied Physics Letters
dc.relation3.495
dc.relation1,382
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.titleMechanisms behind blue, green, and red photoluminescence emissions in CaWO4 and CaMoO4 powders
dc.typeArtigo


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