Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/20259
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dc.contributor.authorReddy, G. V. Lokeswarapt
dc.contributor.authorMoorthy, L. Ramapt
dc.contributor.authorPavani, K.pt
dc.contributor.authorJamalaiah, B. C.pt
dc.date.accessioned2017-12-07T19:40:51Z-
dc.date.issued2013pt
dc.identifier.issn1842-6573pt
dc.identifier.urihttp://hdl.handle.net/10773/20259-
dc.description.abstractTrivalent samarium (Sm3+)/terbium (Tb3+) co-doped YAl3(BO3)(4) (YAB) phosphors were prepared by solid-state reaction method. The phase, structure, optical and energy transfer studies were systematically characterized through X-ray diffraction, Fourier transform infrared spectroscopy, photoluminescence (PL) and decay measurements, respectively. Upon 406 nm excitation, both Sm3+ single- and Sm3+/Tb3+ co-doped YAB phosphors emit orange-red luminescence with peak maximum at 602 nm. The YAB:Tb3+ phosphor emits green luminescence at 546 nm when excited with 375 nm near UV wavelength. The YAB:Sm3+/Tb3+ phosphors emit green-to-white luminescence as a function of Sm3+ concentration upon an excitation wavelength of 375 nm. The Tb3+ acts as an efficient sensitizer of luminescence of Sm3+ under 375 nm excitation in YAB phosphors. Doped Sm3+ and Tb3+ ions were located at the inversion symmetry sites of YAB lattice. The Commission International de l'Eclairage chromaticity coordinates were calculated from the PL spectra. The energy transfer from Tb3+ to Sm3+ ions was described in detail. The YAB:Sm3+/Tb3+ phosphors can be used as a promising material for solid state lighting devices.pt
dc.language.isoengpt
dc.publisherNATL INST OPTOELECTRONICSpt
dc.relationinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F76581%2F2011/PTpt
dc.relationinfo:eu-repo/grantAgreement/FCT/COMPETE/132936/PTpt
dc.rightsrestrictedAccesspor
dc.subjectLANTHANIDE AQUO IONSpt
dc.subjectLUMINESCENCE PROPERTIESpt
dc.subjectZNO NANOPOWDERpt
dc.subjectX-RAYpt
dc.subjectGLASSESpt
dc.subjectEMISSIONpt
dc.subjectEXCITATIONpt
dc.subjectSYSTEMpt
dc.subjectTB3+pt
dc.subjectXRDpt
dc.titlePhotoluminescence and energy transfer studies of YAl3(BO3)(4):Sm3+/Tb3+ phosphors for solid state lighting applicationspt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage712pt
degois.publication.lastPage719pt
degois.publication.titleOPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONSpt
degois.publication.volume7pt
dc.date.embargo10000-01-01-
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