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MATERIALS FOR
OPTOELECTRONICS
 [ Up ] [ Semiconductors ] [ Be Windows ]
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RMT Ltd supplies A2B6
Single Crystal materials in ingots and wafers or other forms according to
customers demands:
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Zinc Sulfide |
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Zinc Selenide |
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Zinc Telluride |
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Cadmium Sulfide |
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Cadmium Selenide |
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Cadmium Sulphoselenide |
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Single crystals are grown by Seeded Vapor-Phase Free Growth
Technology. The purity of the crystals is higher then 6N. By request, post growth
annealing under Zn, Cd, S, Se partial pressure is provided. Various doped materials are
also available. |
 
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BULK CRYSTALS
Parameter |
ZnS |
ZnSe |
ZnTe |
Max.
Ingot Sizes, mm
Growth Direction
Structure
Lattice Parameters, A
Specific Resistivity, Ohm x cm
undoped
doped
Hall Mobility, cm2/(V x sec)
EPD, cm-1
Density of low angle boundaries, cm-1
Twins and stacking faults |
dia.- 40, height - 15
<111>
Cubic
a=5.4093
1x108...1x1012
--
140 (e)
<5x105
--
<4% of
hexagonal phase |
dia.- 55, height - 15
<111> or <100>
Cubic
a=5.6687
1x108...1x1012
5x10-2...1x106
400 (e)
<5x103...1x105
<2
twin free
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dia.- 40, height - 15
<111>
Cubic
a=6.1034
1...1x106
--
130 (h)
<5x105
<10
twin free
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Parameter |
CdS |
CdSe |
CdSSe |
Max. Ingot Sizes, mm
Growth Direction
Structure
Lattice Parameters, A
Specific Resistivity, Ohm x cm
Hall Mobility, cm2/(V x sec)
EPD, cm-1
Density of low angle boundaries, cm-1
Inclusions, mm |
dia.- 50, height - 10
<0001>
Hexagonal
a=4.1369
c=6.7161
1...1x1010
650 (e)
<5x105
<100
<10 |
dia.- 55, height - 15
<0001>
Hexagonal
a=4.2985
c=7.0150
1...1x108
1050 (e)
<5x105
<100
<10 |
dia.- 40, height - 15
<0001>
Hexagonal
4.14<a<4.29
6.71<c<7.00
1...1x108
--
<5x105
<100
<10 |
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WAFERS
High
quality single crystalline wafers are supplied in three standard sizes 5x5, 10x10 mm2
and dia. 20 mm. Three options thickness is 1 mm. Other dimensions and shapes are available by
request.
MAXIMAL DIMENSIONS
OF WAFERS (in mm)
| Orientation |
CdS |
CdSe |
CdSSe |
<111>
<110>
<100> |
dia. 50
45x15
45x15 |
dia. 50
45x15
45x15 |
dia. 50
45x15
45x15 |
| Orientation |
ZnS |
ZnSe |
ZnTe |
<111>
<110>
<100> |
dia. 40
35x20
35x20 |
dia. 55
45x20
dia. 51 |
dia. 40
35x15
35x15 |
* -- at thickness 1 mm
SURFACE FINISH
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As-cut |
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Optical
Polishing |
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STANDARD
ORIENTATION
<100>, <110>, <111> ±30 arc
minutes.
Other orientations available on request.
TOLERANCES
Width/Length, mm
Diameter, mm
Thickness, mm |
±0.050
+0.000/-0.10
±0.050 |
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APPLICATIONS
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ZnS
-UV-radiation semiconductor lasers for optical lithography
ZnSe
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blue radiation semiconductor lasers for projection systems
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electric field gauge |
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IR-optical elements |
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light modulators |
ZnTe - green radiation semiconductor
lasers for projection systems
Zn1-xCdxSe -
light-blue and red radiation semiconductor lasers for projection systems |
Zn1-xCdxS
Zn1-xCdxS
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light-blue and red
radiation semiconductor lasers for projection systems
Zn1-yCdyS1-xSex
-UV and light-blue and red radiation semiconductor lasers for projection systems
ZnS1-xSex
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UV-radiation semiconductor lasers for optical lithography
ZnS1-xTex -
cathode luminescent screens
CdS1-xTex
-cathode luminescent single crystal screen for high resolution projection systems
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Information furnished by
RMT Ltd is believed to be reliable. However, no responsibility is assumed for possible
inaccuracies or omission.
Specifications are subject to change without notice. |
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