酸化亜鉛の光導電性に対する吸着分子の作用

抄録

Effects of some ambient molecules on the surface conductivity of zinc oxide at room temperature were studied. The dark conductivity was found to increase by adsorbing electron donating molecules such as NH₃ and CH₃NH₂, decreased considerably by adsorbing electron acceptors (O₂NO, NO₂ etc.) and unchanged in neutral molecules (N₂ and CO₂). The photoconductive sensitivity was of considerable amount only when the measurement was done in the electroaffeinitive gases. It was suggested that there exists a parallel relation between the chemical activity of the ambient molecules and the rate of current decay process after cease of the irradiation.