• Electric and dielectric properties of solution-gas interface-grown PbS films

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    • Keywords

       

      I–V characteristics; space-charge-limited current; capacitance; loss factor; relaxation effect; dipolar orientation; interfacial polarization

    • Abstract

       

      Dielectric properties andI–V characteristics of solution-gas interface-formed PbS thin-film capacitors (Al/PbS/Al) of various thicknesses have been studied in the frequency range 10-106 Hz at various temperatures (300–443 K). Current-voltage (I–V) characteristics show space-charge-limited conduction. Dielectric constant (ε) increases with increasing film thickness and temperature and decreases with increase of frequency. The loss factor (tanδ) peaks observed in tanδ vs frequency and tanδ vs temperature reveal relaxation effect from dipolar orientation. These maxima shift to higher-temperature region with increasing frequency. The large increase in capacitance (C) and dielectric constant (ε) towards low-frequency (f) region indicates the possibility of an interfacial polarization mechanism in this region.

    • Author Affiliations

       

      P S Nikam1 K A Pathan1 2

      1. PG Department of Physical Chemistry, MSG College, Malegaon Camp - 423 105, India
      2. Department of Physics, MSG College, Malegaon Camp - 423 105, India
    • Dates

       
  • Bulletin of Materials Science | News

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