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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/046/0062

    • Keywords

       

      Surfactant; Rietveld analysis; PL studies; electron density distribution; luminescence centre.

    • Abstract

       

      Scheelite-type surfactant-assisted SrWO$_4$ was prepared via a simple co-precipitation method. The effect of various surfactants such as hexamethylenetetramine, polyvinylpyrrolidone, and sodium dodecyl sulphate, on the structural, morphological and photoluminescence (PL) properties of SrWO$_4$ was investigated. Powder X-ray diffraction and the Rietveld profile refinement technique confirmed the tetragonal structure of all the as-synthesized SrWO$_4$ materials. Among the three surfactants, particles with spherical morphology were observed for SDS-assisted SrWO$_4$. Surfactant-assisted SrWO$_4$ exhibited bluish-green emission around 500 nm, ascribed to the presence of WO${_4}^{2-}$ luminescence centre at 284 nm excitation, and the PL emission intensity significantly increased in the presence of surfactant. Electron density distribution analysis of a single unit cell for all the prepared materials was investigated, and correlated with the PL results.

    • Author Affiliations

       

      SANTHANAM BALU1 D SIVAGANESH1 S SARAVANAKUMAR1 V SIVAKUMAR2 JI-MAN KIM3 PADMANATHAN KARTHICK KANNAN3 V GANESH4

      1. International Research Centre, Department of Physics, Kalasalingam Academy of Research and Education, Virudhunagar 626126, India
      2. Department of Physics, M. Kumaraswamy College of Engineering, Karur 639113, India
      3. Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
      4. Advanced Functional Materials and Optoelectronic Laboratory, Faculty of Science, Department of Physics, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia

    • Dates

       
      Published
      28 March 2023
      Manuscript received
      21 September 2022
      Accepted
      16 November 2022
      Final version published online
      28 March 2023

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