Low-pressure metalorganic chemical vapor deposition of photoluminescent Eu-doped Y sub 2 O sub 3 films

Journal Article · Sun Jul 01 00:00:00 EDT 1990 · Journal of Materials Research; (USA)

DOI:https://doi.org/10.1557/JMR.1990.1573· OSTI ID:6534541

West, G A; Beeson, K W ^[1]

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1. Allied-Signal Inc., P. O. Box 1021R, Morristown, New Jersey 07962 (USA)

We have produced thin photoluminescent films of Eu-doped Y{sub 2}O{sub 3} (Y{sub 2}O{sub 3}:Eu) by low-pressure metalorganic chemical vapor deposition (MOCVD). Yttrium and europium {beta}-diketonate precursors are thermally decomposed in a hot-walled MOCVD reactor in the presence of oxygen at a total reactor pressure of 1 Torr. The films are microcrystalline and photoluminescent as deposited and contain {lt}1 atomic percent of carbon contamination. Subsequent annealing at 1200 {degree}C in air enhances and stabilizes the luminescence. We have measured the photoluminescent lifetimes of the MOCVD films as a function of temperature for the Eu{sup +3} {sup 5}D{sub 1}{r arrow}{sup 7}F{sub 1} and {sup 5}D{sub 0}{r arrow}{sup 7}F{sub 2} transitions using excimer laser excitation at 248 nm. We present a kinetic model which can account for the observed emission lifetimes from 20--1000 {degree}C.

• OSTI ID: 6534541
• Journal Information: Journal of Materials Research; (USA), Vol. 5:7; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
YTTRIUM OXIDES
PHOTOLUMINESCENCE
ANNEALING
CHEMICAL VAPOR DEPOSITION
DOPED MATERIALS
EUROPIUM ADDITIONS
LASER RADIATION
LIFETIME
TEMPERATURE DEPENDENCE
THIN FILMS
ALLOYS
CHALCOGENIDES
CHEMICAL COATING
DEPOSITION
ELECTROMAGNETIC RADIATION
EUROPIUM ALLOYS
FILMS
HEAT TREATMENTS
LUMINESCENCE
MATERIALS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties