Abstract:
An original technology of zinc diffusion into InP via a narrow gap is described, which allows reproducible formation of $p$–$n$ junctions with preset depth of doping and retained surface morphology of the doped layers. Using the proposed method, desired charge carrier distribution profiles in Zn-doped InP layers were obtained. It has been experimentally confirmed that the method of cross-sectional scanning electron microscopy allows to precision measure of the zinc diffusion depth.