In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 38, No. 4R ( 1999-04-01), p. 2013-
Kurzfassung:
Spray pyrolysis method was applied to the preparation of
submicron Ce 1- x Tb x MgAl 11 O 19 phosphor particles.
The characteristics such as photoluminescence, crystallinity, and morphology were investigated under various preparation
conditions. While the as-prepared particles by spray pyrolysis at temperature of 900°C had amorphous phase, the particles
calcined above 1400°C had phase-pure magnetoplumbite structure, and its crystallinity increased with increasing the
calcining temperature. The as-prepared particles had spherical morphology, submicron size, and narrow size distribution. The mean
size of the particles increased from 0.5 to 1.4 µm when the spray solution concentration increased from 0.03 to 1.5 M. After
calcination, the particles showed 545 nm green emission characteristic of Tb 3+ ions with optimum excitation at
280 nm. The maximum luminous intensity was obtained at x =0.4. The
optimum calcining temperature for good brightness was 1500°C. Particles directly prepared by spray pyrolysis at
1500°C show good green emission characteristics and maintain its sphericity and non-aggregation characteristics.
Materialart:
Online-Ressource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.38.2013
Sprache:
Unbekannt
Verlag:
IOP Publishing
Publikationsdatum:
1999
ZDB Id:
218223-3
ZDB Id:
797294-5
ZDB Id:
2006801-3
ZDB Id:
797295-7
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