By William M. Yen, Marvin J. Weber
Inorganic Phosphors: Compositions, coaching and Optical homes addresses useful and theoretical features of inorganic phosphors utilized in lighting fixtures and exhibit functions. Authors Yen and Weber current the synthesis of phosphors in a ...cookbook... variety that includes approximately three hundred ...recipes... utilizing the main updated guidance and strategies. additionally they categorize approximately 500 phosphors by way of chemical composition and luminescence output wavelengths, summarizing their actual and emissive optical homes. This ebook is the 1st of its style to supply a mixed useful and technical beginning that may be utilized in advertisement and educational study and improvement of recent phosphors and functions.
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Extra info for Inorganic Phosphors: Compositions, Preparation and Optical Properties
Powderize. 2. Fire in open quartz boats, N2 loaded with H2O, 1200ºC, 1 hour. After this firing, quench again to room temperature as quickly as possible. Powderize. 3. Fire in open quartz boats, stagnant air, 1200ºC, ~20 min. After this firing, quench again to room temperature as quickly as possible. Powderize. Store in well-closed container. Keep dry. 40 eV by addition of Bi (see CaO:Bi3+) Excitation efficiency by e-beam: Poor Spectra Wavelength (nm) 800 700 600 500 400 300 50 2 3 4 Photon Energy (eV) 5 Absorption (%) Emission 100 0 Remarks 1.
115, 538 (1968). 7 Preparation Mix by slurrying in water. Dry in air. Powderize when dry. Fire in capped quartz tubes, N2, 1300ºC, 1 hour. Powderize. Wash in concentrated nitric acid and then in water until neutral. Dry. 40 eV) Excitation efficiency by e-beam: 4% Spectra Wavelength (nm) 800 700 600 500 400 300 50 2 3 4 Photon Energy (eV) 5 Absorption (%) Emission 100 0 Remark This phosphor has been proposed for X-ray excitation because of the high stopping power of ThO2 for x-rays. References 1.
Parts or all of the Si can be replaced by Ge (but not by Sn). 4. Emission peak moves slightly to longer wavelength with increasing Mn concentration. 5. Efficiency for excitation by UV and by e-beam, and decay after excitation by e-beam pulse, depend on the Mn concentration used. References 1. , An Introduction to Luminescence of Solids, John Wiley & Sons, New York, and Chapman & Hall, London (1950). 2. , The thermoluminescence characteristics of silicate phosphors activated by manganese and arsenic, J.