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Cadmium Telluride (CdTe)

Cadmium Telluride (CdTe) is a brownish-black cubic crystalline compound that is a photonic material. It oxidizes on prolonged exposure to moist air and is insoluble in water and mineral acids except for nitric acid, in which it decomposes. It is etched by many acids, including hydrochloric and hydrobromic acid, forming (toxic) hydrogen telluride gas. CdTe is used in photovoltaic applications because of its low cost, direct band gap, high absorption coefficient, and ability to be easily doped

Purity: 99% – ≥99.98%
Typical Applications

Cadmium telluride finds applications as the semiconductor material in photovoltaics and infrared optical windows and is used in thin film solar cell production for cost-effective solar cell design. CdTe is an infrared optical material for optical windows and lenses applied in electro-optic modulators. It is alloyed with mercury (Hg) to make versatile infrared detector materials (HgCdTe). It can be doped with chlorine and used in radiation detection for x-rays, gamma rays, beta particles, and alpha particles.

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Jars, pails, drums


Cadmium Telluride TSCA (SARA Title III) Status: Listed
For further information. Please call the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902.

Cadmium Telluride CAS Number: 1306-25-8
Cadmium Telluride (CdTe) Toxicity Information:
Cadmium telluride is toxic, but only so if ingested, its dust inhaled, or if it is handled improperly). Once properly and securely captured and encapsulated, CdTe in manufacturing processes may be harmless. The toxicity is not solely due to the cadmium content. Cadmium telluride’s disposal and long-term safety are a known issues in the large-scale commercialization of cadmium telluride solar panels

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