- Zinc telluride
Chembox new
Name = Zinc telluride
ImageFile = Zinc-selenide-unit-cell-3D-balls.png
OtherNames =
Section1 = Chembox Identifiers
CASNo = 1315-11-3
Section2 = Chembox Properties
Formula = ZnTe
MolarMass = 192.99 g/mol
Appearance = red crystals
Density = 6.34 g/cm³, solid
MeltingPt = 1238.5 °C
BoilingPt =
Solubility = Decomposes
Section3 = Chembox Structure
CrystalStruct = cubic
Section7 = Chembox Hazards
EUClass = not listedZinc telluride is the
chemical compound with the formula ZnTe. This solid is an intrinsicsemiconductor material withband gap of 2.23-2.25 eV. It is usually aP-type semiconductor . Itscrystal structure is cubic, like that forsphalerite anddiamond .Applications
Its
lattice constant is 0.61034 nm, allowing it to be grown with or onaluminium antimonide ,gallium antimonide ,indium arsenide , andlead selenide . It has the appearance of grey or brownish-red powder, or ruby-red crystals when refined by sublimation. Zinc telluride can be also prepared as hexagonal crystals. Irradiated by a strong optical beam burns in presence of oxygen.Optoelectronics
Zinc telluride is important for development of various
semiconductor device s, including blue LEDs,laser diode s,solar cell s, and components ofmicrowave generators.It can be used for
solar cell s as a background layer and thep-type semiconductor in PIN structure (e.g. usingcadmium telluride -- p-type ori-type semiconductor , andcadmium sulfide --n-type semiconductor ).Zinc telluride together with
lithium niobate is often used for generation of pulsedterahertz radiation in time-domain terahertz spectroscopy andterahertz imaging . When a crystal of such material is subjected to a high-intensity light pulse of subpicosecond duration, it emits a pulse of terahertz frequency through a nonlinear optical process calledoptical rectification . Conversely, subjecting a zinc telluride crystal to terahertz radiation causes it to show opticalbirefringence and change the polarization of a transmitting light, making it an electro-optic detector.Electro-optics
Zinc telluride can be easily doped, and for this reason it is one of the more common
semiconducting materials used inoptoelectronics .Vanadium -doped zinc telluride, "ZnTe:V," is a non-linear opticalphotorefractive material of possible use in the protection of sensors at visible wavelengths. ZnTe:V optical limiters are light and compact, without complicated optics of conventional limiters. ZnTe:V can block a high-intensity jamming beam from alaser dazzler , while still passing the lower-intensity image of the observed scene. It can also be used in holographicinterferometry , in reconfigurable opticalinterconnection s, and in laser optical phase conjugation devices. It offers superior photorefractive performance at wavelengths between 600-1300 nm, in comparison with other III-V and II-VIcompound semiconductor s. By addingmanganese as an additional dopant (ZnTe:V:Mn), its photorefractive yield can be significantly increased.ee also
*
Zinc sulfide
*Zinc selenide
*Cadmium telluride
*Cadmium zinc telluride References
External links
* [http://www.onr.navy.mil/sci_tech/31/312/ncsr/materials/znte.asp National Compound Semiconductor Roadmap] (Office of Naval research) - Accessed April 2006
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