Cadmium telluride
Semiconductor chemical compound used in solar cells / From Wikipedia, the free encyclopedia
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Cadmium telluride (CdTe) is a stable crystalline compound formed from cadmium and tellurium. It is mainly used as the semiconducting material in cadmium telluride photovoltaics and an infrared optical window. It is usually sandwiched with cadmium sulfide to form a p–n junction solar PV cell.
Quick Facts Names, Identifiers ...
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Irtran-6 | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.013.773 |
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Properties | |
CdTe | |
Molar mass | 240.01 g/mol |
Density | 5.85 g·cm−3[1] |
Melting point | 1,041 °C (1,906 °F; 1,314 K)[2] |
Boiling point | 1,050 °C (1,920 °F; 1,320 K) |
insoluble | |
Solubility in other solvents | insoluble |
Band gap | 1.5 eV (@300 K, direct) |
Thermal conductivity | 6.2 W·m/m2·K at 293 K |
Refractive index (nD) |
2.67 (@10 μm) |
Structure | |
Zinc blende | |
F43m | |
a = 0.648 nm | |
Thermochemistry | |
Heat capacity (C) |
210 J/kg·K at 293 K |
Hazards | |
GHS labelling: | |
Warning | |
H302, H312, H332, H410, H411 | |
P261, P264, P270, P271, P273, P280, P301+P312, P302+P352, P304+P312, P304+P340, P312, P322, P330, P363, P391, P501 | |
NIOSH (US health exposure limits): | |
PEL (Permissible) |
[1910.1027] TWA 0.005 mg/m3 (as Cd)[3] |
REL (Recommended) |
Ca[3] |
IDLH (Immediate danger) |
Ca [9 mg/m3 (as Cd)][3] |
Related compounds | |
Other anions |
Cadmium oxide Cadmium sulfide Cadmium selenide |
Other cations |
Zinc telluride Mercury telluride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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