The ZnGa sub 2 O sub 4 phosphor for low-voltage blue cathodoluminescence

Journal Article · Wed May 01 00:00:00 EDT 1991 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2085816· OSTI ID:5546293

Itoh, S; Toki, H; Sato, Y; Morimoto, K; Kishino, T ^[1]

---

1. Futaba Corp., Research and Development Center, Mobara, Chiba 297 (JP)

This paper reports on the ZnCa{sub 2}O{sub 4} phosphor investigated for its application to vacuum fluorescent displays (VFDs) utilizing low-voltage cathodoluminescence. It is expected that this oxide phosphor does not cause damage to filaments in VFD's, while it is a serious problem for conventional sulfide phosphors. This phosphor shows blue luminescence with a spectral peak at with 470 nm and a chromaticity at X = 0.170 and Y = 0.130. A luminous efficiency of 0.7 lm/W has been obtained, when the VFD with this phosphor is operated at 30 V dc. The results of high-temperature operating life test have proven the excellent stability of VFDs utilizing this phosphor.

• OSTI ID: 5546293
• Journal Information: Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 138:5; ISSN 0013-4651; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
CATHODOLUMINESCENCE
CHALCOGENIDES
GALLIUM COMPOUNDS
GALLIUM OXIDES
LUMINESCENCE
MATERIALS TESTING
OXIDES
OXYGEN COMPOUNDS
PHOSPHORS
TESTING
ZINC COMPOUNDS
ZINC OXIDES