Phosphors

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Phosphors

Phosphors are substances that convert energy from electron beams, electromagnetic waves, and ultraviolet photons primarily into visible light.Nichia's phosphors are used in a variety of applications, including LEDs and medical X-ray applications. Nichia is proud of its world-leading technology.

Phosphors for X-ray

Nichia manufactures phosphors for X-ray applications: Gd2O2S:Tb, Gd2O2S:Pr, BaFCl:Eu, and BaFBrI;Eu. In recent years, these X-ray phosphors have been widely used for baggage inspection as well as medical applications.

Chemical Formula Part No. Material Average Particle Size (μm) Median Particle Size (μm) Applications
Gd2O2S:Tb NP3010 Powder 2.0~3.0
6.0~6.5
10.0~11.0
3.0~4.0
6.5~7.5
11.0~12.0
X-ray Intensifying Screens
Baggage Inspection
Gd2O2S:Pr NP3012 3.5~4.5
5.5~7.0
10.0~11.5
5.0~8.5
10.0~13.0
BaFCl:Eu NP3050 4.0 9.0
BaFBrI:Eu NP3055 2.2~3.0
4.4~5.4
3.0~4.0
6.3~7.7

Specialty Phosphors

Four types of specialty phosphors are available: Gd2O2S:Tb, Y2O2S:Tb, Y3(Al,Ga)5O12:Ce, and Y2SiO5:Ce.Specialty phosphors are mainly used for image intensifier applications that amplify and improve visual imaging for low-light processes or for converting non-visible light sources to visible.

Chemical Formula Part No. Material Average Particle Size (μm) Median Particle Size (μm) CIE x CIE y Applications
Gd2O2S:Tb NP1043 Powder 1.4~3.2
4.2~5.3
1.4~2.3
3.3~4.0
5.5~6.7
0.34~0.35 0.57 Image Intensifier
Y2O2S:Tb NP1045 1.5~2.7 1.7~3.3 0.25~0.26 0.31~0.32
Y3(Al,Ga)5O12:Ce NP1046 1.7
3.5
2.2
4.3
0.29
0.42
0.53
0.55
Y2SiO5:Ce NP1047 3.5 5.9 0.17 0.09