Multiple choice

Infrared astronomy is the detection and study of the infrared radiation (heat energy) emitted from objects in the Universe. Which of the following compounds is used in infrared imaging and infrared astronomy?

  1. Silver telluride

  2. Sodium telluride

  3. Mercury zinc telluride

  4. Mercury cadmium telluride
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Mercury zinc telluride (HgZnTe, MZT) is a telluride of mercury and zinc, an alloy of mercury telluride and zinc telluride. It is a narrow-gap semiconductor material. Mercury zinc telluride is used in infrared detectors and arrays for infrared imaging and infrared astronomy.

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