Columbia ISA - Audio & Video
Television
CRT Phosphors
CRT phosphors are specific chemical compounds which are luminescent and are arranged on the inside of the TV tube in a certain order and are available in various colors, starting with basic red, green and blue for color CRTs, with precise grain size control, dispersion control and surface treatment to match exact tube specifications. 

When excited by a scanning electron beam in the CRT, the phosphors will glow momentarily until refreshed again (many times per second) forming a picture composed of colors by utilizing the red, green and blue combinations. If you look at your TV screen (while it is turned on) with a magnifying glass, you can see the colored elements. Over many years of use, the phosphors will gradually fade in brilliance and the color of your TV screen will lose its original richness.

   Chemical compounds of phosphors
Red Phosphor (europium yttrium vanadate)
Green Phosphor (zinc cadmium sulfide)
Blue Phosphor (zinc sulfide)
TV display screens
CRT Phosphors2
magnified CRT screen


CRT electron gun 'paints' the picture on the screen many times per second
 
Category
Color (JEDEC RMA Number)
Chemical Composition
Color CRT
Blue (P-22B)
ZnS:Ag
Blue (P-22B)
ZnS:Ag+Pigment
Green (P-22G)
ZnS:Cu,Al
Green (P-22G)
ZnS:Cu,Au,Al
Red (P-22R)
Y2O2S:Eu
Red (P-22R)
Y2O2S:Eu+Pigment
 
Oher phosphors
Phosphors are also widely used in applications such as those listed below.
 
Category
Color
Chemical Composition
EL Panels
Blue-Green
 ZnS:Cu
Green
 ZnS:Cu
Orange
 ZnS:Cu,Mn
X-Ray Intensifying Screens
 
 Gd2O2S:Tb
Printing
Blue
 ZnS:Ag
Green
 ZnS:Cu
Orange
 ZnS:Mn

Luminescent Materials
CRT Phosphors - P22 Color - EIA Registered

NP #
 Composition WTDS/EIA S.G. Emission Peak (nm)/Color Decay (1/10) Notes
NP-2111
 ZnS:Ag,Cl
(non-pigmented)		 X/P22 4.07
450 Blue
MS
-
NP-2112
 ZnS:Ag,Cl
(pigmented)		 X/P22 4.07
450 Blue
MS
-
NP-2121
 ZnS:Ag,Al
(non-pigmented)		 X/P22 4.07
450 Blue
MS
-
NP-2122
 ZnS:Ag,Al
(pigmented)		 X/P22 4.07
450 Blue
MS
-
NP-2211
 ZnS:Cu,Al X/P22,DB/P54 4.10
530 Green
MS
 Cu Green
NP-2221
 ZnS:Cu,Au,Al X/P22 4.10
535 Green
MS
 Au Green
NP-2311
 Y2O2S:Eu
(non-pigmented)		 X/P22,DB/P54 4.95
626 Red
M
-
NP-2312
 Y2O2S:Eu
(pigmented)		 X/P22 4.95
626 Red
M
-

ZnS = Zinc sulfide, Ag = Silver, Cl = Chlorine, Cu = Copper, Al= Aluminum, Au = Gold

NP #
 Composition WTDS/EIA S.G. Emission Peak (nm)/Color Decay (1/10) Notes
NP-1001
 Zn2SiO4:Mn GJ/P1 4.13
525
M
 Display Tubes
NP-1004
 ZnS:Ag + (Zn,Cd)S:Cu WW/P4
-
White
MS
 B&W Tubes, Display Tubes
NP-1011
 ZnS:Ag,Cl or ZnS:(Zn) BE/P11 4.07
460
MS
 Display Tubes, Vacuum Fluorescent Display
NP-1019
 (KF,MgF2):Mn LF/P19 3.14
590
L
 Radar Screen
NP-1020
 (Zn,Cd)S:Ag or (Zn,Cd)S:Cu KA/P20 4.13
Yellow
M
 Display Tubes
NP-1024
 ZnO:Zn GE/P24 5.60
505
S
 Vacuum Fluorescent Display
NP-1026
 (KF,MgF2):Mn LC/P26 3.14
595
VL
 Radar Screen
NP-1028
 (Zn,Cd)S:Cu,Cl KE/P28
-
Yellow
M
 Display Tubes
NP-1031
 ZnS:Cu or ZnS:Cu,Ag GH/P31 4.10
Yellowish-Green
MS
 Oscilloscopes for Printing
NP-1033
 MgF2:Mn LD/P33 3.14
590
VL
 Radar Screen
NP-1038
 (Zn,Mg)F2:Mn LK/P38 3.14
590
VL
 Radar Screen
NP-1039
 Zn2SiO4:Mn,As GR/P39 4.20
525
L
 Display Tubes
NP-1040
 ZnS:Ag + (Zn,Cd)S:Cu GA/P40
-
White
L
 Display Tubes
NP-1043
 Gd2O2S:Tb GY/P43 7.50
545
M
 Display Tubes
NP-1045
 Y2O2S:Tb WB/P45 4.95
545 White
M
 View Finder
NP-1045
 Y2O2S:Tb
-
 4.95
545 Green
M
 Display Tubes
NP-1046
 Y3Al5O12:Ce KG/P46 4.15
530
VS
 Beam Index Tubes
NP-1046A
 Y3(Al,Ga)5O12:Ce
-
 4.96
520
VS
 Beam Index Tubes
NP-1047
 Y2SiO5:Ce BH/P47 4.36
400
VS
 Beam Index Tubes
NP-1053
 Y3Al5O12:Tb KJ/P53 4.74
544
M
 Projection Tubes
NP-1053A
 Y3(Al,Ga)5O12:Tb
-
 5.15
544
M
 Projection Tubes
NP-1055
 ZnS:Ag,Al BM/P55 4.07
450
MS
 Projection Tubes
NP-1056
 Y2O3:Eu X/P22,RF/P56 5.05
611
M
 Projection Tubes

CRT Phosphors - Others

NP #
 Composition S.G. Emission Peak (nm)/Color Decay (1/10) Notes
NP-1101
 InBO3:Tb 5.47
550
M
-
NP-1102
 InBO3:Eu 5.47
588
M
-
NP-1104
 ZnS:Ag 4.07
450
MS
-
NP-1108
 ZnS:Cu,Al or ZnS:Cu,Au,Al 4.07
530
MS
-
NP-1109
 ZnS:Ag
-
450
MS
-
NP-1150
 Y2SiO5:Tb 4.43
545
M
 Projection Tubes
NP-1201
 (Zn,Cd)S:Cu,Cl + (Zn,Cd)S:Ag,Cl
-
White
M
-
NP-1291
 InBO3:Tb + InBO3:Eu
-
Amber
M
-
NP-1305
 ZnS:Ag + ZnS:Cu(or ZnS:Cu,Au) + Y2)2S:Eu
-
White
M
 Cd free P4, B&W Tubes, Display Tubes
NP-1381
 InBO3:Tb + InBO3:Eu + ZnS:Ag
-
White
M
-


PHOSPHORS FOR CATHODE RAY TUBES
 
TEPAC-WW CHEMICAL COMPOSITION MEDIAN PARTICLE SIZE (µm)
      
P1-GK Zn2SiO4:Mn 8.0
P1-GK Zn2SiO4:Mn 3.0
P5-BJ CaWO4 8.0
P7-YX (Zn,Cd)S:Cu 12.0
P11-BE ZnS:Ag 6.5
P11-BE ZnS:Ag 3.0
P15-GG ZnO:Zn 4.0
P19-LF KMgF3:Mn 8.0
P20-KA (Zn,Cd)S:Ag 8.0
P20-KA (Zn,Cd)S:Ag 3.5
P20-KA (Zn,Cd)S:Ag 2.1
P22-X (R) Y2O2S:Eu 7.5
P22-X (R) YVO4:Eu 5.0
P22-X (G) ZnS:Cu,Au,Al 8.0
P22-X (B) ZnS:Ag 8.0
P25-LJ CaSiO3:Mn,Pb 8.0
P26-LC KMgF3:Mn 8.0
P31-GH ZnS:Cu 10.0
P33-LD MgF2:Mn 9.0
P38-LK (Zn,Mg)F2:Mn 8.5
P39-GR Zn2SiO4:Mn, As 7.5
P39-GR Zn2SiO4:Mn, In 6.0
P43-GY Gd2O2S:Tb 8.5
P43-GY Gd2O2S:Tb 3.5
P43-GY Gd2O2S:Tb 2.5
P44-GX La2O2S:Tb 7.0
P45-WB Y2O2S:Tb 7.5
P45-WB Y2O2S:Tb 3.5
P45-RED-ENH Y2O2S:Tb,Eu 5.0
P45-RED-ENH Y2O2S:Tb,Eu 3.5
P45-RED-ENH Y2O2S:Tb,Eu 2.5
P46-KG Y3Al5O12:Ce 6.0
P46-KG Y3Al5O12:Ce 3.0
P46(Ga) Y3(Al,Ga)5O12:Ce 5.7
P46(Ga) Y3(Al,Ga)5O12:Ce 2.5
P47-BH Y2SiO5:Ce 6.5
P47-BH Y2SiO5:Ce 3.0
P47-BH Y2SiO5:Ce 2.0
P48-KH (P46+P47 BLEND) 6.0
P53(Ga) Y3(Al,Ga)5O12:Tb 8.5
P53(Ga) Y3(Al,Ga)5O12:Tb 3.5
P53(Ga) Y3(Al,Ga)5O12:Tb 2.5
P56-RF Y2O3:Eu 6.0
P56-RF Y2O3:Eu 3.5

Compounds of zinc:

zinc (II) sulphide

Synonyms

Physical properties

Element analysis.

Element

%
S 32.90
Zn 67.10

TV Screens



 
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