Multiple choice

Solar cells convert sunlight directly into electricity. Which of the following compounds is generally used with cadmium sulphide to form a p-n junction photovoltaic solar cell?

  1. Antimony telluride

  2. Beryllium telluride

  3. Bismuth telluride

  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 sulphide to form a p-n junction photovoltaic solar cell. Typically, CdTe cells use a n-i-p structure.