Influence of Activator Environment on the Spectral Emission of Phosphors
β Scribed by Fonda, Gorton R.
- Book ID
- 115378861
- Publisher
- Optical Society of America
- Year
- 1957
- Weight
- 520 KB
- Volume
- 47
- Category
- Article
- ISSN
- 0030-3941
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π SIMILAR VOLUMES
## Abstract Photoluminescence (PL) of thallium coβdoped with KCl~0.5~Br~0.5~:Eu^2+^ powder phosphors display emission bands at 320 and 370Β nm attributable to centres involving Tl^+^ ions in addition to characteristic Eu^2+^ emission around 420Β nm. Additional PL excitation and emission bandS observe
reasons for this success are: (1) a tunable, polarized light source, (2) an energy analyzer which could be positioned arbitrarily with respect to the sample and the light source, and (3) a theory of photoemission which is sufficiently accurate that the variations in intensity with molecular orientat