• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/043/0216

    • Keywords

       

      Chalcogenide glass; carbon nanotubes; electrolyte; non-Debye type.

    • Abstract

       

      This study is devoted to the investigation of electrical properties of multi-walled carbon nanotube (MWCNT)-contaminated Cu-Se-Te-In chalcogenide glassy composite in the temperature range 303–373 K and frequencyinterval from 1 Hz to 1 MHz. The MWCNT/chalcogenide glass was characterized by means of X-ray diffractometer, field emission scanning electron microscope, impedance spectroscopy and electrical measurements. Electrical conductivity was increased by 10–100 times of magnitude by adding 1 and 2 wt% of MWCNT to it, changing the behaviour from insulator to the semiconductor. This rapid change in the electrical conductivity for carbon nanotube-added glasses is due to the highly conducting behaviour of carbon nanotubes. The data observed from dc conductivity measurement in the temperature range 303–373 K suggest that thermally activated hopping is the dominant conduction mechanism betweenlocalized states in band tails, which is explained by Mott’s model. The temperature-dependent relaxation phenomenon has also been examined by a detailed analysis of impedance spectra.

    • Author Affiliations

       

      PRIYANKA JAISWAL1 PRAVIN KUMAR SINGH1 POOJA LOHIA2 D K DWIVEDI1

      1. Amorphous Semiconductor Research Lab, Department of Physics and Material Sciences, Madan Mohan Malaviya University of Technology, Gorakhpur 273010, India
      2. Department of Electronics and Communication, Madan Mohan Malaviya University of Technology, Gorakhpur 273010, India
    • Dates

       
  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.