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- W1999001950 abstract "ZnS phosphor powders have been subjected to electron bombardment (2 keV, 2 mA/cm2) at a residual gas pressure of 1.2×10−8 Torr and oxygen pressures of 10−6 Torr. Auger electron spectroscopy and cathodoluminescence (CL), both excited by the same electron beam were used to monitor changes in surface state and luminous efficiency during electron bombardment. A direct correlation between the surface reactions and the degradation of CL brightness was observed. Both C and S were depleted from the surface during electron bombardment. The postulated mechanism for the electron stimulated reactions on the phosphor surface is electron beam dissociation of molecular species to atomic species which subsequently react with C to form volatile compounds (COx, CH4, etc.) and with ZnS to form a nonluminescence layer of either ZnO or ZnSO4. The growth in thickness of the nonluminescence surface layer is directly responsible for the degradation in CL brightness." @default.
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- W1999001950 date "1996-05-01" @default.
- W1999001950 modified "2023-09-23" @default.
- W1999001950 title "Degradation of zinc sulfide phosphors under electron bombardment" @default.
- W1999001950 cites W1504193762 @default.
- W1999001950 doi "https://doi.org/10.1116/1.580322" @default.
- W1999001950 hasPublicationYear "1996" @default.
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