Fluoro-Chloro Apatite forms the basis of the now obsolete Halophosphor fluorescent tube phosphor system. Dopant elements of manganese and antimony, at less than one mole-percent, in place of the calcium and phosphorus impart the fluorescence, and adjustment of the fluorine to chlorine ratio adjusts the shade of white produced. Now almost entirely replaced by the Tri-Phosphor system.

Tri-Phosphor T-8 lamps use a blend of rare earth phosphors in a 1-inch diameter bulb for substantial increases in lighting efficiency. They provide system efficacies up to 80 lumens per watt on magnetic ballasts and up to 104 lumens per watt on electronic ballasts. With the rare earth phosphors, they achieve a Color Rendering Index of 85 compared to 62 for standard T-12 fluorescent lamps

Some of the least pleasant light comes from tubes containing the older halophosphate type phosphors (chemical formula Ca5(PO4)3(F,Cl):Sb3+,Mn2+). The bad color reproduction is due to the fact that this phosphor mainly emits yellow and blue light, and relatively little green and red. In the absence of a reference, this mixture appears white to the eye, but the light has an incomplete spectrum. The CRI of such lamps is around 60.

Since the 1990s, higher quality fluorescent lamps use either a higher CRI halophosphate coating, or a triphosphor mixture, based on europium and terbium ions, that have emission bands more evenly distributed over the spectrum of visible light. High CRI halophosphate and triphosphor tubes give a more natural color reproduction to the human eye. The CRI of such lamps is typically 82-100.

A typical "cool white" fluorescent lamp utilizing two rare earth doped phosphors, Tb3+, Ce3+:LaPO4 for green and blue emission and Eu:Y2O3 for red. For an explanation of the origin of the individual peaks click on the image. Note that several of the spectral peaks are directly generated from the mercury arc. This is likely the most common type of fluorescent lamp in use today.



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Zdroj: http://www.phosphor-technology.com/products/crt.htm

Listed below is the range of PTL phosphors for CRTs with their designations and corresponding PTL grade.
TEPAC-WW
PTL GRADE
CHEMICAL COMPOSITION
CIE COLOUR COORDINATE X
CIE COLOUR COORDINATE Y
MEDIAN PARTICLE SIZE (MICRON)

P1-GK  GBK25/N-C1  Zn2SiO4:Mn  0.208  0.704  7.0
P1-GK  GBK25/F-C1  Zn2SiO4:Mn  0.208  0.704  3.0
P5-BJ  FPK/N-C1  CaWO4  0.170  0.120  8.0
P7Y-X  JGL29/N-C1  (Zn,Cd)S:Cu  0.358  0.524  12.0
P11-BE  GL47/N-C1  ZnS:Ag  0.147  0.076  6.5
P11-BE  GL47/F-C1  ZnS:Ag  0.147  0.076  4.0
P15-GG  GK30/F-F1  ZnO:Zn  0.245  0.442  3.5
P19-LF  CEQ25S/N-C1  KMgF3:Mn  0.568  0.425  8.0
P20-KA  GJL47/N-C1  (Zn,Cd)S:Ag  0.297  0.571  8.0
P20-KA  GJL47/F-C1  (Zn,Cd)S:Ag  0.297  0.571  3.5
P20-KA  GJL47/UF-C1  (Zn,Cd)S:Ag  0.297  0.571  2.5
P22B-X  GL47/N-C2  ZnS:Ag  0.148  0.062  8.0
P22G-X  GL29A/N-C1  ZnS:Cu,Au,Al  0.310  0.594  8.0
P22R-X  QHK63/N-U1  YVO4:Eu  0.661  0.332  6.5
P22R-X  QHK63/S-U1  YVO4:Eu  0.661  0.332  5.0
P22R-X  QKL63/N-C1  Y2O2S:Eu  0.647  0.343  7.5
P25-LJ  FBK25P/N-C1  CaSiO3:Mn,Pb  0.540  0.456  8.0
P26-LC  CEQ25/N-C1  KMgF3:Mn  0.570  0.423  8.0
P31-GH  GL29/N-C1  ZnS:Cu  ON REQUEST  8.0
P31-GH  GL29/F-C1  ZnS:Cu  ON REQUEST  4.0
P33-LD  EQ25/N-C1  MgF2:Mn  0.561  0.434  8.0
P38-LK  GEQ25/N-C1  (Zn,Mg)F2:Mn  0.541  0.450  5.0
P39-GR  GBK25A/N-C1  Zn2SiO4:Mn,As  0.195  0.697  7.5
P39-GR  GBK25I/N-C1  Zn2SiO4:Mn,In  0.197  0.712  6.0
P43-GY  UKL65D/N-C1  Gd2O2S:Tb  0.337  0.561  8.5
P43-GY  UKL65D/S-C1  Gd2O2S:Tb  0.337  0.561  5.0
P43-GY  UKL65D/F-C1  Gd2O2S:Tb  0.337  0.561  3.5
P43-GY  UKL65D/UF-C1  Gd2O2S:Tb  0.337  0.561  2.5
P44-GX  SKL65/N-C1  La2O2S:Tb  0.346  0.590  8.0
P45-WB  QKL65/N-C1  Y2O2S:Tb  0.263  0.342  7.5
P45-WB  QKL65/F-C1  Y2O2S:Tb  0.263  0.342  3.5
P45-WB  QKL65/UF-C1  Y2O2S:Tb  0.263  0.342  2.5
P45-RED-ENH.  QKL65E/S-C1  Y2O2S:Tb,Eu  0.295  0.267  5.0
P45-RED-ENH.  QKL65E/F-C1  Y2O2S:Tb,Eu  0.295  0.267  3.5
P45-RED-ENH.  QKL65E/UF-C1  Y2O2S:Tb,Eu  0.295  0.267  2.5
P46-KG  QMK58/N-C1  Y3Al5O12:Ce  0.412  0.544  8.0
P46-KG  QMK58/F-C1  Y3Al5O12:Ce  0.412  0.544  3.5
P46(Ga)  QMPK58/S-C1  Y3(Al,Ga)5O12:Ce  0.306  0.521  5.5
P46(Ga)  QMPK58/F-C1  Y3(Al,Ga)5O12:Ce  0.306  0.521  3.5
P46(Ga)  QMPK58/UF-C1  Y3(Al,Ga)5O12:Ce  0.306  0.521  2.5
P47-BH  QBK58/N-A2  Y2SiO5:Ce  0.170  0.103  9.0
P47-BH  QBK58/F-A2  Y2SiO5:Ce  0.170  0.103  3.5
P47-BH  QBK58/UF-A2  Y2SiO5:Ce  0.170  0.103  2.5
P48-KH  QMBK58/N-C1  P46+P47 BLEND  0.318  0.394  6.0
P48-KH  QMBK58/F-C1  P46+P47 BLEND  0.318  0.394  4.0
P53(Ga)  QMPK65/N-C1  Y3(Al,Ga)5O12:Tb  0.355  0.557  8.5
P53(Ga)  QMPK65/F-C1  Y3(Al,Ga)5O12:Tb  0.355  0.557  4.0
P53(Ga)  QMPK65/UF-C1  Y3(Al,Ga)5O12:Tb  0.355  0.557  2.5
P56-RF  QK63/N-C1  Y2O3:Eu  0.650  0.346  8.0
P56-RF  QK63/F-C1  Y2O3:Eu  0.650  0.346  5.0
P56-RF  QK63/UF-C1  Y2O3:Eu  0.650  0.346  3.5
------  RL63/N-C1  InBO3:Eu  0.592  0.405  6.5
------  RL65/N-C1  InBO3:Tb  0.320  0.619  7.5
PAPER-WHITE  RLW  InBO3:Eu + InBO3:Tb + ZnS:Ag  0.265  0.286  8.5
-LA (Cd-Free)  RLA/N-C1  InBO3:Eu + InBO3:Tb  0.531  0.455  8.5

PDP phosphors are designed for operation in flat panel plasma displays.
PTL GRADE
CHEMICAL COMPOSITION
MEDIAN PARTICLE SIZE (MICRON)
EMISSION PEAK (nm)
QK63/UF-P1  Y2O3:Eu  2.5  611
QUL63/F-P1  (Y,Gd)BO3:Eu  4.0  593, 612, 627
GBK25/F-P1  Zn2SiO4:Mn  3.5  525
KMK25/F-P1  BaO.6Al2O3:Mn  3.5  515
KEMK63/F-P1  BaMg2Al16O27:Eu  4.0  450