LOW-VOLTAGE CATHODOLUMINESCENCE OF MN2-ACTIVATED ZNGA2O4()

ZnGa2O4 and Zn1-xMnxGa2O4 were investigated as potential low voltage c athodoluminescence phosphors for use in vacuum fluorescent displays. A low-voltage cathodoluminescence spectrophotometer was developed for p hosphor characterization. Brightness was measured as a function of ano de voltage (10 to 300 V). The effects of activator concentration, phos phor layer thickness, deposition process, and internal pressure were e xamined. The stability of these oxide phosphors in high vacuum and abs ence of corrosive gas emission under electron bombardment, offer advan tages over commonly used sulfide phosphors.