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Material
(Index)
Definition
Se
Selenium
ZnSe
Zinc Selenide
General characteristics
: in preparation
Crystal structure:
zinc blend
Lattice constant [nm]:
0.566
Density [g/cm
3
]:
5.42
Atomic concentration [cm
-3
]:
Melting point [
o
C]:
1,520
Thermal conductivity [W/cm
o
C]:
Thermal expansion coefficient[1/
o
C]:
Dielectric constant (static):
9.2
Refractive index:
2.89
Energy gap [eV]:
2.6
Type of energy gap:
direct
Drift mobility [cm
2
/V-sec]:
Electron:
540
Hole:
30
Intrinsic carrier conc. [cm
-3
]:
CdSe
Cadmium Selenide
General characteristics:
II-VI emiconductor compound potentially useful in various photonic device and solar cell applications; recently explored in the form of nanocrystalline quantum dot for LED applications.
Crystal structure:
wurzite (hexagonal)
Lattice constant [nm]:
a
0.429
;
c
0.7
Density [g/cm
3
]:
5.81
Atomic concentration [cm
-3
]:
Melting point [
o
C]:
1268
Thermal conduct.[W/cm K]:
0.04
Th. expansion coeff.[1/
o
C]:
Dielectric constant (static):
Refractive index:
2.4
Energy gap [eV]:
1.74
Type of energy gap:
direct
Drift mobility [cm
2
/V sec]:
Electron:
900
Hole
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