Green emitting phosphor
A green emitting phosphor exhibiting an excellent absorption ratio is provided. A green emitting phosphor containing a crystal represented by MGa 2 S 4 :Eu 2+ , wherein M is an element comprising one species or a combination of two or more species among Sr, Ba and Ca, and Eu 2+ is a luminescent center, and wherein the particle diameter at 10%, D10, 4.5 μm to 30 μm in the volume-based particle size distribution measured and obtained by the laser diffraction/diffusion particle size distribution measurement method.
1. A green emitting phosphor containing a crystal represented by MGa 2 S 4 :Eu 2+ , wherein M is an element comprising one species or a combination of two or more species among Sr, Ba and Ca, and Eu 2+ is a luminescent center, and wherein
the particle diameter at 10% (D10) cumulative percent passing from the small particle-size side is 4.5 μm to 30 μm in the volume-based particle size distribution measured and obtained by the laser diffraction/diffusion particle size distribution measurement method.
2. The green emitting phosphor according to claim 1 , wherein the particle diameter at 90% (D90) cumulative percent passing from the small particle-size side being 100 μm or smaller in the volume-based particle size distribution measured and obtained by the laser diffraction/diffusion particle size distribution measurement method.
3. The green emitting phosphor according to claim 1 , displaying an excitation spectrum of 300 nm to 510 nm wavelength.
4. The green emitting phosphor according to claim 2 , displaying an excitation spectrum of 300 nm to 510 nm wavelength.
5. A green light luminescent device provided with an excitation source and the green emitting phosphor according to claim 1 .
6. A green light luminescent device provided with an excitation source and the green emitting phosphor according to claim 2 .
7. A green light luminescent device provided with an excitation source and the green emitting phosphor according to claim 3 .
8. A green light luminescent device provided with an excitation source and the green emitting phosphor according to claim 4 .
9. A green light luminescent unit provided with an excitation source and the green emitting phosphor according to claim 1 .
10. A green light luminescent unit provided with an excitation source and the green emitting phosphor according to claim 2 .
11. A green light luminescent unit provided with an excitation source and the green emitting phosphor according to claim 3 .
12. A green light luminescent unit provided with an excitation source and the green emitting phosphor according to claim 4 .
13. A white light luminescent device provided with an excitation source, the green emitting phosphor according to claim 1 and a red emitting phosphor.
14. A white light luminescent device provided with an excitation source, the green emitting phosphor according to claim 2 and a red emitting phosphor.
15. A white light luminescent device provided with an excitation source, the green emitting phosphor according to claim 3 and a red emitting phosphor.
16. A white light luminescent device provided with an excitation source, the green emitting phosphor according to claim 4 and a red emitting phosphor.
17. A white light luminescent unit provided with an excitation source, the green emitting phosphor according to claim 1 and a red emitting phosphor.
18. A white light luminescent unit provided with an excitation source, the green emitting phosphor according to claim 2 and a red emitting phosphor.
19. A white light luminescent unit provided with an excitation source, the green emitting phosphor according to claim 3 and a red emitting phosphor.
20. A white light luminescent unit provided with an excitation source, the green emitting phosphor according to claim 4 and a red emitting phosphor.