Premium
30.3: Reduction of Electron‐Beam‐Induced Degradation of ZnS Green Phosphor Coated with Phosphate
Author(s) -
Mitsuishi Iwao,
Matsuda Naotoshi,
Albessard Ariane Keiko,
Asai Hironori,
Tamatani Masaaki,
Inamura Masaaki,
Yokosawa Nobuyuki
Publication year - 2006
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2433219
Subject(s) - phosphor , degradation (telecommunications) , transmission electron microscopy , desorption , phosphate , materials science , luminescence , scanning electron microscope , mass spectrometry , analytical chemistry (journal) , layer (electronics) , chemistry , optoelectronics , adsorption , nanotechnology , environmental chemistry , composite material , chromatography , telecommunications , organic chemistry , computer science
Electron‐beam‐induced luminescence degradation is found to be reduced in ZnS: Cu, Al phosphor coated with a limited low content of phosphate. The behavior of the degradation is correlated with the quantities of SO 2 and H 2 O gases released from the phosphors, analyzed by temperature programmed desorption‐mass spectrometry (TPD‐MS) and transmission electron microscopy (TEM) observations. We find that the layer coated with the appropriate phosphate content is uniform and continuous, which prevents the surface chemical reactions that cause the degradation.