Efficient red GaP LED's with compensated p layers

Abstract
Efficient red GaP LED's have been fabricated by compensating the p side of the junction with a donor. The observed efficiency in the diodes fabricated remains invariant over a wide range of net acceptor concentration. Utilizing the recombination kinetic analysis of Jayson, Bhargava, and Dixon, it is shown that better injection efficiencies and higher Zn–O complex concentrations are the cause for this invariance. The compensation technique potentially offers a commercial LPE growth process from which high‐efficiency low‐cost LED's could be fabricated.