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Optical functionalization of cryolite polycrystals using transition metal/rare earth ions for the applications of lighting and biological imaging
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Zhou, Yuanshu. Optical functionalization of cryolite polycrystals using transition metal/rare earth ions for the applications of lighting and biological imaging. Retrieved from https://doi.org/doi:10.7282/T3C250P2

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TitleOptical functionalization of cryolite polycrystals using transition metal/rare earth ions for the applications of lighting and biological imaging
NameZhou, Yuanshu (author); Riman, Richard E (chair); Rutgers University; School of Graduate Studies
Date Created2018
Other Date2018-01 (degree)
SubjectChemical and Biochemical Engineering, Cryolite
Extent1 online resource (viii, 59 p. : ill.)
DescriptionCryolite (Na3AlF6) was assumed to be a promising luminescent host for near-infrared photon emission with transition metal (TM)/rare earth (RE) ions as dopants. Micron cryolite samples were obtained through hydrothermal reaction, while nanocrystals were synthesized via solvothermal reaction. It is demonstrated that RE3+ ions having large radii cannot be doped into Na3AlF6 host lattice by replacing Al3+ sites that with smaller radius. TM ions(TM=Mn2+, Ni2+，Cr3+, Fe3+) are successfully doped into Na3AlF6 with substitution of Al3+ sites，while the Cr3+ doped Na3AlF6 exhibited broad efficient deep-red emission at ~720 nm. A systematic study of luminescence intensity versus Cr3+ concentration was explored to obtained the optimized cryolite phosphor. Energy decay dynamics was systematically analyzed on the basis of theoretical model and experimental data. Heat-treated micron phosphor and Na3AlF6:60mol%Cr3+@Na3AlF6 nanoparticles were proved to have efficient luminescence, which create big chance for advanced red/far-red light-emitting diodes (LEDs) and specific application like bioimaging in vivo.
NoteM.S.T.
NoteIncludes bibliographical references
Noteby Yuanshu Zhou
Genretheses, ETD graduate
Persistent URLhttps://doi.org/doi:10.7282/T3C250P2
Languageeng
CollectionSchool of Graduate Studies Electronic Theses and Dissertations
Organization NameRutgers, The State University of New Jersey
RightsThe author owns the copyright to this work.
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