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    • Photoconductivity and dielectric studies of potassium pentaborate crystal (KB5)

      V Joseph S Gunasekaran V Santhanam

      Optical Properties Volume 26 Issue 4 June 2003 pp 383-386

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      https://www.ias.ac.in/article/fulltext/boms/026/04/0383-0386

    • Keywords

       

      Photoconductivity; dielectric constant; dark current.

    • Abstract

       

      Single crystal of potassium pentaborate (KB5) has been grown by solution growth technique. FTIR and laser Raman measurements are carried out to make a qualitative analysis on KB5 crystal. Dielectric behaviour of the KB5 crystal has been studied in the microwave region using K-band microwave bench equipped with the Gunn Oscillator guided with rectangular wave-guide. To confirm the suitability of this crystal as electro optic device, its dielectric behaviour with the change of frequency has also been investigated. Photoconductivity studies were also carried out on this material. It was interesting to observe that the KB5 crystal exhibited negative photoconductivity.

    • Author Affiliations

       

      V Joseph1 S Gunasekaran2 V Santhanam3

      1. Department of Physics, Loyola College, Chennai 600 034, India
      2. Department of Physics, Pachaiyappa’s College, Chennai 600 030, India
      3. Department of Physics, Presidency College, Chennai 600 005, India

    • Dates

       
      Published
      June 2003
      Manuscript received
      30 October 2002
      Manuscript revised
      27 February 2003

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