Fluorescent material

Details Fluorescent material Fluorescent material

1977-10-28

1978-08-15

Cooper, Jack

Chemistry of inorganic compounds

Rare earth compound

423306, 2523014P, C09K 1146

Patent

active

041072731

ABSTRACT:
An infrared rays excited - infrared rays emitting fluorescent material which contains predetermined quantities of neodymium and ytterbium as activators is disclosed.
The fluorescent material according to this invention is higher in the luminescence intensity than a conventional, infrared rays excited - infrared rays emitting fluorescent material which is activated with neodymium only. Moreover, its maximum luminescence wavelength lies within a wavelength region which a silicon photosensor can detect at high sensitivity. It is therefore very useful in practical use.
The fluorescent material is represented by the following formula:

REFERENCES:
patent: 3624549 (1971-11-01), Geusic et al.
patent: 4000247 (1976-12-01), Yamada et al.
Buzhinskii et al., "Chemical Abstracts," vol. 83, 1975, 120045d.
"Chemical Abstracts," vol. 84, 1976, 187444x.
Yamada et al., "J. Applied Physics," vol. 45, No. 11, 1974, pp. 5096-5097.

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