Phosphors
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 |
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| Gd2O2S:Pr | NP3012 | 3.5~4.5 5.5~7.0 10.0~11.5 |
5.0~8.5 10.0~13.0 |
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| BaFCl:Eu | NP3050 | 4.0 | 9.0 | ||
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| BaFBrI:Eu | NP3055 | 2.2~3.0 4.4~5.4 |
3.0~4.0 6.3~7.7 |
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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 |
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| Y2O2S:Tb | NP1045 | 1.5~2.7 | 1.7~3.3 | 0.25~0.26 | 0.31~0.32 | ||
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| Y3(Al,Ga)5O12:Ce | NP1046 | 1.7 3.5 |
2.2 4.3 |
0.29 0.42 |
0.53 0.55 |
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| Y2SiO5:Ce | NP1047 | 3.5 | 5.9 | 0.17 | 0.09 | ||
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