• R N Bhattacharya

      Articles written in Bulletin of Materials Science

    • Electroless deposition of Alpha-PbO2 and Tl2O3

      R N Bhattacharya P Pramanik

      More Details Abstract Fulltext PDF

      A chemical method for electroless deposition of thin film ofa-PbO2 and Tl2O3 has been developed. The deposition has been performed by ammonia, persulfate ion and metal ions at a higher temperature. The electrical resistance, mobility and carrier concentration have been measured with variation of thickness of the films. Optical absorption spectra reveal the band edges which are 1·7 eV and 1·95 eV ofa-PbO2 and Tl2O3 respectively.

    • New chemical methods for the deposition of Cu1·8S and TlSe thin film

      R N Bhattacharya P Pramanik

      More Details Abstract Fulltext PDF

      New chemical methods for the deposition of thin film of Cu1·8S and TlSe have been developed. The deposition of Cu1·8S thin film has been performed by thiourea, ammonia and Cu2+ ions at room temperature, while TlSe thin films are obtained from triethanolamine as complexing agent, ammonia, sodium selenosulphate solution and Tl1+ ions at room temperature. The electrical resistance, mobility, carrier concentration and optical band gap have been measured.

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