n-Type and p-Type Conduction in Alkali-Antimonide Photoemitters

Abstract

Conductivity measurements were made during the formation of alkali antimonides to deduce whether these materials are p‐type or n‐type conductors. Reproducible results were obtained, indicating that K₃Sb and Na₃Sb are n type while Cs₃Sb and the multialkali antimonides are p type. A correlation between high‐quantum efficiency of photoemission and p‐type conduction is suggested.