Properties of the Fe Acceptor Level in Inp Under Hydrostatic Pressure

Abstract

The Fe/sup 3+/2+/ acceptor level in p-type and n-type InP crystals was measured under hydrostatic pressure in the isothermal DLTS. A strong pressure dependence of iron peak intensities in both materials as well as nonlinear pressure dependence of emission rates logarithm were observed. These facts prove that both emission rates must be taken into account in spite of the Fermi level position. The pressure coefficients of the iron acceptor energy relatively to the conduction and valence bands were found as 90 meV/GPa and -7 meV/GPa, respectively.