| Identification | More | [Name]
CADMIUM TELLURIDE | [CAS]
1306-25-8 | [Synonyms]
CADMIUM TELLURIDE
cadmiummonotelluride
cadmiumtelluride(cdte)
irtran6
Cadmium telluride Coating quality Balzers
Cadmium telluride,(99.999% Cd)
Cadmiumtelluridemetalsbasisblacklumps
Cadmium telluride, powder, <250 micron, 99.99+% metals basis
CADMIUM TELLURIDE COATING QUALITY BALZE&
99.99999+%(metalsbasis)
CADMIUM TELLURIDE 99.99%-99.9999%
Cadmiumtelluride(99.999%-Cd)PURATREM
cadmium tellurde
Cadmium telluride, 99.9999+% (metals basis)
Cadmium telluride, 99.999% (metals basis)
Cadmium telluride, <5 micron, 99.99+%
Cadmium telluride,polycrystalline pieces,Puratronic Ultra-Pure | [EINECS(EC#)]
215-149-9 | [Molecular Formula]
CdTe | [MDL Number]
MFCD00015998 | [Molecular Weight]
240.01 | [MOL File]
1306-25-8.mol |
| Chemical Properties | Back Directory | [Appearance]
Brownish-black, cubic crystals.Oxidizes on prolonged expo-
sure to moist air. Insoluble in water and mineral
acids except nitric, in which it is soluble with
decomposition. | [Melting point ]
1092 °C | [density ]
6.2 g/mL at 25 °C(lit.)
| [vapor pressure ]
0Pa at 25℃ | [refractive index ]
2.75 | [solubility ]
insoluble in H2O, dilute acid solutions | [form ]
crystalline
| [color ]
Black | [Specific Gravity]
6.2 | [Water Solubility ]
Insoluble in water. | [Crystal Structure]
Hexagonal, Wurtzite (Zincite) Structure - Space Group P 63mc | [Merck ]
14,1629 | [Boiling point ]
1130°C | [Exposure limits]
ACGIH: TWA 0.01 mg/m3; TWA 0.002 mg/m3; TWA 0.1 mg/m3
NIOSH: IDLH 9 mg/m3; IDLH 25 mg/m3; TWA 0.1 mg/m3 | [CAS DataBase Reference]
1306-25-8(CAS DataBase Reference) | [EPA Substance Registry System]
Cadmium telluride (CdTe) (1306-25-8) |
| Safety Data | Back Directory | [Hazard Codes ]
T,N,Xn | [Risk Statements ]
R45:May cause cancer.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment . | [Safety Statements ]
S53:Avoid exposure-obtain special instruction before use .
S22:Do not breathe dust .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S60:This material and/or its container must be disposed of as hazardous waste . | [RIDADR ]
UN 2570 6.1/PG 3
| [WGK Germany ]
3
| [RTECS ]
EV3330000 | [TSCA ]
Yes | [HazardClass ]
6.1(b) | [PackingGroup ]
III | [HS Code ]
28429090 | [Toxicity]
mouse,LD,oral,> 15gm/kg (15000mg/kg),Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 25(2), Pg. 42, 1981. |
| Hazard Information | Back Directory | [Hazard]
Toxic by inhalation.
| [Chemical Properties]
Brownish-black, cubic crystals.Oxidizes on prolonged expo-
sure to moist air. Insoluble in water and mineral
acids except nitric, in which it is soluble with
decomposition. | [Physical properties]
Ladd investigated the temperature dependence of transmittance in the infrared region. As a result, transmittance in wavelength longer than 22 mm decreases as the temperature increases.
In the transmission spectra, weak absorption bands are observed in addition to the main absorption in λ: 60–70 mm.
The reflectance peaks in the infrared region are at 67 mm (300 K) and 65 mm (90 K)
| [Uses]
Cadmium telluride may be used in photovoltaic solar cells as the window layer. CdTe was used in the preparation of an Au/Cu2Te/CdTe/CdS/TCO/glass heterostructure for solar cell. | [Uses]
Cadmium telluride finds applications as the semiconductor material in photovoltaics and infrared optical window. It is used in the production of thin film solar cells. It is doped with chlorine and used as a radiation detector for x-rays, alfa and beta particles. . | [Uses]
In semiconductor research, in phosphors. | [Application]
Cadmium telluride is used as the substrate of low-pass filters and as the infrared transmitting window with antireflection coating.
| [Production Methods]
A single crystal of cadmium telluride is grown by many methods. In the case of vapor growth, the methods include flowing a carrier gas or condensing CdTe vapor on a low temperature area. In the case of growth from melt, pulling down a quartz ampoule encapsulated with CdTe at the speed of 10 mm/h in the Stockbarger furnace is the easiest method. The temperature difference of 50℃–60℃ between the upper furnace and lower furnace is appropriate. The traveling method performed in the horizontal Stockbarger furnace is another method. Zone refining is done vertically, while encapsulated in the quartz tube. Processing is possible in the same way as Ge and Si. The material made by pressing cadmium telluride powder is called Irtran-6.
Thin films are deposited by vacuum evaporation using a conical basket heater made of Ta or W, or by direct heating in a boat. The substrate temperature is heated at 250℃ for a glass and 20℃–380℃ for a mica.
| [General Description]
CdTe is a photonic material. Crystal structure of CdTe is zinc blende structure. 3CdTe is usually an obvious choice for photovoltaic applications because of its; low cost, direct band gap (1.44eV),3 high absorption coefficient, easily doped with p and n type dopants by several preparation techniques. 2 | [Structure and conformation]
The space lattice of CdTe (Cadmium telluride) belongs to the cubic system, and the zinc-blend type structure has a lattice constant of a=0.646 nm and the nearest neighbor atomic distance of 0.279 nm. The cleavage plane is (110).
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| Company Name: |
Alfa Aesar
|
| Tel: |
400-6106006 |
| Website: |
http://chemicals.thermofisher.cn |
| Company Name: |
Energy Chemical
|
| Tel: |
021-021-58432009 400-005-6266 |
| Website: |
http://www.energy-chemical.com |
|