Agoria price 2012. Results published in Optical Materials: http://www.sciencedirect.com/science/article/pii/S0925346712002418

1. Lumilab
Department of Solid State Sciences
Agoria, November 23, 2012
Green phosphors for high brightness applications
Jonas Joos
Jonas Joos Green phosphors for high brightness applications

2. OFF ON
Conversion phosphor
Principle
Jonas Joos Green phosphors for high brightness applications

3. OFF ON
Conversion phosphor
Principle
Jonas Joos Green phosphors for high brightness applications

4. Conversion phosphor
Principle
Jonas Joos Green phosphors for high brightness applications

5. OFF ON
Conversion phosphor
Principle
Jonas Joos Green phosphors for high brightness applications

6. OFF ON
Conversion phosphor
Principle
Jonas Joos Green phosphors for high brightness applications

7. Conversion phosphor
Principle
Jonas Joos Green phosphors for high brightness applications

8. Conversion phosphor
Technological Applications
Jonas Joos Green phosphors for high brightness applications

9. Liquid Crystal Display (LCD)
Phosphors in displays
Laser Phosphor Display (LPD)
Jonas Joos Green phosphors for high brightness applications

10. Improved efficiency for displays
EBU gamut
Planckian locus
v.s.
Jonas Joos Green phosphors for high brightness applications

11. Sr1-xEuxGa2S4
Photoluminescence
Luminescence
Jonas Joos Green phosphors for high brightness applications

12. Sr1-xEuxGa2S4
Photoluminescence
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

13. Photoluminescence
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

14. Photoluminescence
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

15. Photoluminescence
Thermal stability
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

16. Photoluminescence
Thermal stability
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

17. Photoluminescence
Thermal stability
Quantum efficiency
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

18. Photoluminescence
Thermal stability
Quantum efficiency
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

19. Photoluminescence
Thermal stability
Quantum efficiency
Absence of emission saturation at high fluxes
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

20. Photoluminescence
Thermal stability
Quantum efficiency
Absence of emission saturation at high fluxes
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

21. Photoluminescence
Thermal stability
Quantum efficiency
Absence of emission saturation at high fluxes
Chemical stability
Sr1-xEuxGa2S4
Luminescence
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

22. Photoluminescence
Thermal stability
Quantum efficiency
Absence of emission saturation at high fluxes
Chemical stability
emission
excitation
Sr1-xEuxGa2S4
Luminescence
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

23. Sr1-xEuxGa2S4
Chemical stability
Time (h)
Normalizedintensity
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

24. Sr1-xEuxGa2S4
Time (h)
Normalizedintensity
Sol-gel deposition
20 s
800 RPM
50’
500°C
Transparant
sol
Spin-
coating
Sol on phosphor
(op Si)
Heat
treatment
Al2O3
coating
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Chemical stability
Jonas Joos Green phosphors for high brightness applications

25. Sr1-xEuxGa2S4
Time (h)
Normalizedintensity
Sol-gel deposition
Unprotected powder
Sol-gel coated
20 s
800 RPM
50’
500°C
Transparant
sol
Spin-
coating
Sol on phosphor
(op Si)
Heat
treatment
Al2O3
coating
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Chemical stability
Jonas Joos Green phosphors for high brightness applications

26. Sr1-xEuxGa2S4
Time (h)
Normalizedintensity
Atomic layer deposition (ALD)
Unprotected powder
Sol-gel coated
Precursor pulse
Reactive gas pulse
Al2O3
coating
Chemical stability
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

27. Sr1-xEuxGa2S4
Time (h)
Normalizedintensity
Atomic layer deposition (ALD)
Unprotected powder
Sol-gel coated
Precursor pulse
Reactive gas pulse
Al2O3
coating
ALD coated
Chemical stability
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

28. Sr1-xEuxGa2S4
Time (h)
Normalizedintensity
Atomic layer deposition (ALD)
Unprotected powder
Sol-gel coated
Precursor pulse
Reactive gas pulse
Al2O3
coating
ALD coated
Chemical stability
emission
excitation
TQ
QE
saturation
stability
SrGa2S4:Eu
Jonas Joos Green phosphors for high brightness applications

29. Conclusions & Prospects
SrGa2S4:Eu : promising phosphor for displays
chemical stability maintained with coating
6/6
Prospects : Infitec® 3D without filtering
red phosphors
remote phosphors
alternative dopants
-
-
-
-
-
-
-
Jonas Joos Green phosphors for high brightness applications

30. SrSi2O2N2:Eu2+ ZnGa2S4:Eu2+
Ba3Si6O12N2:Eu2+ SrGa2S4:Eu2+
Thank you!
Jonas Joos Green phosphors for high brightness applications