Multiple choice

Which of the following compounds is used as an infrared optical window?

  1. Cadmium nitrate

  2. Cadmium selenide

  3. Cadmium sulfate

  4. Cadmium telluride
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cadmium telluride (CdTe) is a crystalline compound formed from cadmium and tellurium. It is used as an infrared optical window and a solar cell material. It is usually sandwiched with cadmium sulfide to form a p-n junction photovoltaic solar cell.

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