Decay time of the blue luminescence in ZnSe at room temperature

The decay time of the blue luminescence at room temperature in n‐type ZnSe grown by metalorganic chemical vapor deposition has been measured, using a mode‐locked laser as excitation source and a streak camera for detection. Over an uncompensated donor concentration range 1017–1018 cm−3 the decay time is of the order of 100 ps. The short time is a result of strong nonradiative recombination: it is argued that the concentration of Hall–Shockley–Read recombination centers is high.