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Diffused-junction GaAs electroluminescent diodes of small area and high radiance have been fabricated. It has been observed (1) that the degradation of these high-current-density cw diodes can be reduced greatly by superimposing a periodic reverse-bias pulse on the normal dc forward bias, and (2) that a previously degraded diode is restored to its initial light output by the influence of the built-in junction fields, or an applied dc reverse bias, at an elevated temperature.
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Burrus et al. (1970) studied this question.
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