Preliminary investigations of the formation of laser-doped contacts on semiconductors

Abstract

Contacts formed by laser doping single crystal semiconducting samples have been investigated by a variety of techniques. p- and n-type contacts have been formed on Ge, Si and GaAs by irradiating evaporated surface layers with a Q-switched ruby laser. The contact produced were thin and heavily doped. Techniques used to examine the contacts include Rutherford backscattering, scanning electron microscopy and sheet Hall and resistivity measurements.