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The authors have developed a ZnSe based blue-green (500m) light emitting diode, employing a mesa type structure, exhibiting low voltage and high brightness operation. This device displayed an output power of 200 µW (3 cd) for a current of 30 mA, under an operating voltage of 8.6 V, and had a record efficiency of 0.26%.
Rennie et al. (Thu,) studied this question.