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4.2: A New Blue Phosphor for PDP Applications
Author(s) -
Rao R. P.
Publication year - 2002
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1830953
Subject(s) - phosphor , plasma display , materials science , excited state , brightness , optoelectronics , analytical chemistry (journal) , optics , chemistry , atomic physics , physics , electrode , chromatography
Small particle thulium activated lanthanum phosphate (LaPO 4 : Tm 3+ ) phosphor samples are prepared by a solid‐state as well as sol‐gel processes in presence of flux. These phosphors exhibit a narrow band emission in blue region, peaking at 453 nm when excited by 147 and 173 nm radiation from Xenon gas mixture. They also exhibit good color saturation and better stability when excited with VUV radiation when compared with the currently available commercial phosphors such as BAM. The phosphor of present investigation, having uniform and spherical shape particles in the range 0.1 to 2 microns, is appropriate for thin phosphor screens required for PDP applications. To achieve higher brightness, these phosphors are blended with other UV excited blue emitting phosphors such as BAM. Results related to morphology, emission and degradation of these phosphors in the process and operation of plasma display panels are presented and discussed.