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    • Two-stage adsorption and desorption processes in some nitroaromatic semiconductor-vapour systems : implications in compensation effect in dark conduction process

      K M Jain Alpana Ghosh T N Misra

      Physical and Theoretical Volume 90 Issue 1 January 1981 pp 27-33

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/090/01/0027-0033

    • Keywords

       

      Nitroaromatic semiconductor; adsorption kinetics; desorption kinetics; compensation effect

    • Abstract

       

      Adsorption and desorption ofn-hexane, cyclohexane, CCl4, C6H6 ethylacetate, methanol and ethanol vapours on the crystallite surfaces of 2-nitrofluorene and three isomeric nitrobenzoic acid semiconductors have been investigated using electrical conductivity as a probe. Kinetic analysis data show that in all these vapour-semiconductor systems, the adsorption is a two-stage process. Existence of any relationship between the adsorption process and the compensation effect in dark conduction process has been examined. The compensation effect is generally observed in cases where the change in semiconduction activation energy is caused by a two-stage adsorption process.

    • Author Affiliations

       

      K M Jain1 Alpana Ghosh1 T N Misra1

      1. Optics Department, Indian Association for the Cultivation of Science, Calcutta - 700 032, India

    • Dates

       
      Published
      January 1981
      Manuscript received
      19 September 1980
      Manuscript revised
      10 December 1980

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