TOM
Tailored Optical
Materials
Phosphor Information Leaflet
GENERAL
Name
Chemical formula
Application areas
Silicon aluminium oxynitride europium
Si(3-x)AlxOxN(4-x):Eu2+
Light emitting diodes
OPTICAL PROPERTIES
Excitation maxima (λEm = 539 nm)
406 nm (3.05 eV)
Emission maximum (λEx = 450 nm)
Centroid wavelength
FWHM
Lumen equivalent
CIE1931 chromaticity coordinates (x, y)
Band edge of host lattice
Decay time 1/e
T1/2
542 nm (2.29 eV)
561 nm (2.21 eV)
55 nm
558 lm/W
0.3525, 0.6252
6.2 eV[1]
1 µs
> 500 K
PHYSICAL PROPERTIES
Body colour
Density
Refractive index (nD)
Mineral type
Crystal system
Space group (#)
Yellow
3.2 g/cm3
2.0167[3]
Nierite
Hexagonal
P63 (173)
Emission (Ex = 450 nm)
Excitation (Em = 539 nm)
Reflectance
Energy (eV)
3,5
3
2,5
2
0,8
80
0,6
60
0,4
40
0,2
20
0,0
250
300
350
400
450
500
550
600
Wavelength (nm)
X-ray diffraction pattern (Cu K radiation)
1,55
100
650
700
750
0
800
[2]
Normierte Intensität (a.u.)
4
Diffuse reflectance (%)
Relative intensity (a.u.)
4,96 4,5
1,0
10
20
30
40
50
2 (°)
60
70
80
[1] Teak D. Boyko, T. Gross, M. Schwarz, H. Fuess, A. Moewes. J. Mater. Sci. 8 (2014) 3242
[2] PDF-4+ (ICDD) 04-016-3886
[3] Refractive index database, refractiveindex.info