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Dissertation/Thesis Abstract

Novel Phosphors Based on Ordered Olivine Type Metal Oxide CaYGaO 4
by Araiza, Stephanie M., M.S., California State University, Long Beach, 2018, 88; 10837382
Abstract (Summary)

Two series of novel phosphors based on parent compound CaYGaO4 were developed. The first series was created by doping trivalent europium into the yttrium position in percentages ranging from 0.50–20. The samples exhibit one strong emission in the orange region of the visible spectrum one medium emission in the yellow and several weak emissions in the green and red. This series preforms well in elevated temperatures, which makes them good candidates for solid state lighting purposes. The second series was created by doping terbium into the yttrium position at percentages ranging from 0.50–20. This latter series exhibits two strong emissions in the green portion of the visible spectrum, and a few weak ones in the red. These, however have high thermal quenching which makes them not suitable for solid state lighting purposes. It should be noted that using just this host lattice alone, there are still many more possibilities for the development of other phosphors, and this work is only the very beginning.

Indexing (document details)
Advisor: Derakhshan, Shahab
Commitee: Slowinska, Katarzyna, Tian, Fangyuan
School: California State University, Long Beach
Department: Chemistry and Biochemistry
School Location: United States -- California
Source: MAI 58/02M(E), Masters Abstracts International
Subjects: Chemistry, Inorganic chemistry
Keywords: CaYGaO4, Europium, Olivine, Phosphor, Terbium
Publication Number: 10837382
ISBN: 978-0-438-63362-9
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