Quantum-splitting oxide-based phosphors and method of producing the same
Patent
·
OSTI ID:1174471
Strontium, calcium, strontium calcium, strontium calcium magnesium, calcium magnesium aluminates, and strontium borates activated with Pr.sup.3+ exhibit characteristics of quantum-splitting phosphors under VUV excitation. A large emission peak at about 405 nm under VUV excitation is used conveniently to identify quantum-splitting phosphors. Improvements may be achieved with addition of fluorides or boric acid as a flux during the preparation of the phosphors. It is also possible to predict improvement in quantum efficiency by observing the ratio of emission intensities at about 480 nm and about 610 nm.
- Research Organization:
- GE Global Research, Niskayuna, New York (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC26-99FT40632
- Assignee:
- General Electric Company (Niskayuna, NY)
- Patent Number(s):
- 6,613,248
- Application Number:
- 09/681,670
- OSTI ID:
- 1174471
- Country of Publication:
- United States
- Language:
- English
Calculated quantum yields for photon-cascade emission (PCE) for Pr3+ and Tm3+ in fluoride hosts
|
journal | January 1976 |
Two photon luminescence with ultraviolet excitation of trivalent praseodymium
|
journal | February 1974 |
Cascade fluorescent decay in Pr3+-doped fluorides: Achievement of a quantum yield greater than unity for emission of visible light
|
journal | February 1974 |
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