Journal ArticleDOI
The ZnGa2 O 4 Phosphor for Low‐Voltage Blue Cathodoluminescence
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TLDR
In this paper, the ZnCa{sub 2}O{sub 4} phosphor was investigated for its application to vacuum fluorescent displays (VFDs) utilizing lowvoltage cathodoluminescence.Abstract:
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.read more
Citations
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Journal ArticleDOI
ZnGa2O4:Cr3+: a new red long-lasting phosphor with high brightness
Aurélie Bessière,Sylvaine Jacquart,K. R. Priolkar,Aurélie Lecointre,Bruno Viana,Didier Gourier +5 more
TL;DR: ZnGa2O4:Cr3+ is shown to be a new bright red UV excited long-lasting phosphor potentially suitable for in vivo imaging due to its 650 nm-750 nm emission range.
Journal ArticleDOI
Considerable Improvement of Long-Persistent Luminescence in Germanium and Tin Substituted ZnGa2O4
Mathieu Allix,Sébastien Chenu,Emmanuel Véron,T. Poumeyrol,El Amin Kouadri-Boudjelthia,Salaheddine Alahrache,Florence Porcher,Dominique Massiot,Franck Fayon +8 more
TL;DR: In this paper, the red long-lasting luminescence properties of the ZnGa2O4:Cr3+ spinel material are shown to be improved when germanium or tin is substituted to the nominal composition.
Journal ArticleDOI
Electronic structure of spinel oxides: zinc aluminate and zinc gallate
TL;DR: In this article, the authors used the self-consistent tight-binding linearized muffin-tin orbital method with the atomic sphere approximation to predict zinc-based spinel oxides to be direct-gap materials.
Journal ArticleDOI
Two self-activated optical centers of blue emission in zinc gallate
TL;DR: In this article, the compositional dependence of the photoluminescence of ZnGa2O4 has been studied to identify the optical centers, and the new self activated optical centers are due to the tetrahedral GaO groups in the spinel lattice.
Journal ArticleDOI
Structural and optical properties of terbium oxide nanoparticles
TL;DR: In this article, high-resolution transmission electron microscopy has identified particles with a mean size of 4.2 µm and a cubic phase with green luminescence corresponding to 5 D 4 → 7 F n = 3,4,5,6 transitions of Tb 3+ ions.