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dc.contributor.authorYu, Naiyin
dc.date.accessioned2014-03-04T16:20:03Z
dc.date.available2014-03-04T16:20:03Z
dc.date.issued2008-08
dc.identifier.otheryu_naiyin_200808_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/yu_naiyin_200808_ms
dc.identifier.urihttp://hdl.handle.net/10724/25098
dc.description.abstractStrontium aluminate co-doped with divalent europium, trivalent dysprosium ions 2+3+(SrAl2O4: Eu, Dy) shows a green demonstrated long persistence lasting for up to 15 hours 3+3+under sunlight excitation. The research presented in this thesis focus on the Er/ Nd activated 2+infrared (IR) long persistence due to the persistent energy transfer process in SrAl2O4: Eu, 3+3+3+Dy, Er/ Nd nanophosphor system. The XRD, SEM, EDX and optical spectra analysis method are employed to characterize the phosphors synthesized by combustion route. The 2+3+3+efficient energy transfer process from sensitizer Eu to the activator Er/ Nd in SrAl2O4 host system is investigated. Meanwhile, the long persistence luminescence in IR region is obtained. To our knowledge, there is no related material system regarding sunlight-excited infrared long persistence nanophosphor reported. 2+3+3+3+
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectSrAl2O4: Eu2+
dc.subjectDy3+
dc.subjectEr3+/ Nd3+
dc.subjectInfrared (IR) long persistence
dc.subjectPersistent energy transfer
dc.titleSunlight-excited infrared long persistence of SrAl2O4: Eu2+, Dy3+, Er3+/ Nd3+ nanophosphors
dc.typeThesis
dc.description.degreeMS
dc.description.departmentPhysics and Astronomy
dc.description.majorPhysics
dc.description.advisorZhengwei Pan
dc.description.committeeZhengwei Pan
dc.description.committeeHeinz-Bernd Schuttler
dc.description.committeeLoris Magnani


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