Phosphors for Cathode Ray
Tubes
| Type |
Chemical Formula |
Emission Color |
Emission Peak |
50% Bandwidth (nm) |
Decay |
JT-31 Code/Application |
| 1152 |
Y2O2S:Eu |
Red |
625 |
3 |
MS |
P-22, color TV 1,2 |
| 1260 |
ZnS:Cu:Al |
Green |
526 |
72 |
MS |
Color TV, data display2 |
| 1261 |
ZnS:Cu:Al:Au |
Green |
540 |
78 |
MS |
Color TV, data display2 |
| 1271 |
Y3(Al,Ga)5O12:Tb |
Green |
544 |
4 |
M |
Heads-up display, special CRT |
| 1330 |
ZnS:Ag |
Blue |
450 |
55 |
MS |
P-22, color TV1,2 |
| 1153 |
Y2O 2S:Eu |
Red (wide gamut) |
625 |
3 |
MS |
Color TV |
| 1262 |
ZnS:Cu:Al:Au |
Green (wide gamut) |
540 |
78 |
MS |
Color TV, data display |
| 1331 |
ZnS:Ag |
Blue (wide gamut) |
450 |
55 |
MS |
Color TV, data display |
Decay (or persistence) is a measure of the time required for the
phosphor brightness to decay to 10% of its initial value after cessation
of excitation. The quantitative counterparts are as follows:
| VL |
- |
over 1 second |
| L |
- |
over 100 milliseconds to 1 second |
| M |
- |
over 1 millisecond to 100 milliseconds |
| MS |
- |
over 10 microseconds to 1 millisecond |
| S |
- |
over 1 microsecond to 10 microseconds |
| VS |
- |
1 microsecond or less |
Notes:
- For improved contrast, pigmented variations are available.
- Particle size and color coordinate value variations are available to
meet individual customer specifications.
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