Characterization and conductive coating of phosphors for improved brightness

In this study, the phosphors used in CRTs are coated with In 2O 3 conductive layer derived from the hydrolysis of indium chloride. The conductive coating retards/eliminates charging-up on the phosphor surface during the bombardment of the electrons and improves the cathodoluminescent brightness of t...

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Bibliographic Details
Published in:Applied surface science 2005-04, Vol.243 (1), p.55-61
Main Authors: Chang, Chia-Hao, Chiou, Bi-Shiou, Chen, Kuen-Shian, Ho, Jia-Chong
Format: Article
Language:English
Subjects:
Brightness
Cathodoluminescence, ionoluminescence
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
InCl 3
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other luminescence and radiative recombination
Phosphor
Physics
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Summary:In this study, the phosphors used in CRTs are coated with In 2O 3 conductive layer derived from the hydrolysis of indium chloride. The conductive coating retards/eliminates charging-up on the phosphor surface during the bombardment of the electrons and improves the cathodoluminescent brightness of the phosphor. However, the non-emissive conductive coating also degrades the cathodoluminescent brightness when it is too thick. The cathodoluminescent brightness increases initially with the amount of coating, reaches a maximum at 10 wt.% InCl 3, and decreases with further increase of coating. It is found that with a 10 wt.% InCl 3 coating, the brightness of phosphor increases by 20% at 500 V and 1 μA.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2004.07.069