Further information on the mechanism of photoconductivity in chemically deposited lead sulfide layers

Abstract
The mechanism of photoconductivity in chemically deposited lead sulfide layers on ceramic SrTiO3 substrates has been examined by measurements of electrical conductivity, Hall effect, photo‐Hall effect, and dc and ac photoconductivity. The information obtained is supplementary to that reported by Espevik et al. It confirms further that the dark‐conductivity process with barrier‐controlled mobility is completely independent of preparation procedure and substrate, and indicates the presence of sensitizing centers for p‐type photoconductivity located 0.22 and 0.13 eV below the conduction band.

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