Abstract
Results on the measurements of electric field dependence of thermal emission of holes from the 0.85-eV level in liquid-phase-epitaxial GaP, using deep-level transient spectroscopy, are reported for various temperatures. The observed field dependence is analyzed in terms of Poole–Frenkel emission from the three-dimensional Coulomb and square-well potentials. The field effect is found to be too weak to account for the large spread in the published emission rate data on the 0.85-eV hole level in GaP necessitating a reappraisal of its hitherto presumed origin.
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