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Melt synthesis of oxide phosphors with K2NiF4 structures: CaLa1−xEuxGaO4

Ishigaki, Tadashi ; Toda, Kenji ; Watanabe, Tomoaki ; Sakamoto, Naonori ; Matsushita, Nobuhiro ; Yoshimura, Masahiro

Journal of materials science, 2008-07, Vol.43 (14), p.4749-4752 [Periódico revisado por pares]

New York: Springer US

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Título:
Melt synthesis of oxide phosphors with K2NiF4 structures: CaLa1−xEuxGaO4
Autor: Ishigaki, Tadashi ; Toda, Kenji ; Watanabe, Tomoaki ; Sakamoto, Naonori ; Matsushita, Nobuhiro ; Yoshimura, Masahiro
Assuntos: Characterization and Evaluation of Materials ; Chemistry and Materials Science ; Classical Mechanics ; Crystallography and Scattering Methods ; Materials Science ; Polymer Sciences ; Reactivity of Solids ; Solid Mechanics
É parte de: Journal of materials science, 2008-07, Vol.43 (14), p.4749-4752
Descrição: In order to synthesize compounds of various Perovskite-related structures, we have utilized a novel “melt synthesis technique” for phosphors rather than the conventional solid state reaction techniques. The solid state reactions require multi-step processes of heating/cooling with intermediate grindings to make homogeneous samples. However, for the melt synthesis, it is possible to make a homogeneous sample in a single step within a short period of time (1–60 s) due to the liquid phase reaction in the molten samples, which were melted by strong light radiation in an imaging furnace. In this study, we have prepared a red-phosphor CaLaGaO 4 :Eu 3+ which has a perovskite—related layered K 2 NiF 4 structure. Well-crystallized CaLa 1− x Eu x GaO 4 samples with the K 2 NiF 4 structure have been obtained up to x = 0.25, but there was the formation of an olivine phase when x = 0.5–1.0. The red emission at 618 nm increased with the increasing value of x up to x = 0.25.
Editor: New York: Springer US
Idioma: Inglês

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Melt synthesis of oxide phosphors with K2NiF4 structures: CaLa1−xEuxGaO4

Ishigaki, Tadashi ; Toda, Kenji ; Watanabe, Tomoaki ; Sakamoto, Naonori ; Matsushita, Nobuhiro ; Yoshimura, Masahiro

New York: Springer US

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