Hydrothermal synthesis of rare‐earth magnetoplumbite phosphors for plasma‐display applications | Zendy

Ravichandran D. | Zendy; Roy Rustum | Zendy; White William B. | Zendy

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Hydrothermal synthesis of rare‐earth magnetoplumbite phosphors for plasma‐display applications

Author(s) -

Ravichandran D.,

Roy Rustum,

White William B.

Publication year - 1998

Publication title -

journal of the society for information display

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.578

H-Index - 52

eISSN - 1938-3657

pISSN - 1071-0922

DOI - 10.1889/1.1985211

Subject(s) - phosphor , hydrothermal circulation , materials science , hydrothermal synthesis , plasma display , rare earth , emission intensity , emission spectrum , crystal structure , analytical chemistry (journal) , spectral line , luminescence , mineralogy , crystallography , chemistry , chemical engineering , optoelectronics , metallurgy , physics , electrode , chromatography , astronomy , engineering

— Green phosphors with a nominal composition Ce 1−x Tb x MgAl 11 O 19 (CAT phosphors) (0.05 ≤ × ≤ 0.5) have been prepared under hydrothermal conditions. The phosphor CeMgAl 11 O 19 : Tb 3+ crystallizes in the magnetoplumbite structure. The Tb 3+ emission intensity at 545 nm varies with Tb 3+ composition and reaches a maximum at × = 0.1. The excitation spectra were characteristic of Ce 3+ , but no Ce 3+ emission was observed. Internal energy transfer from Ce 3+ → Tb 3+ is complete. SEM micrographs show well‐crystallized faceted crystal platelets with a particle size of ∼0.4 μm.

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