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Sol–gel synthesis and luminescence properties of CaGd2(MoO4)4:Pr3+ phosphors for white LED applications

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Abstract

A series of novel red emitting CaGd2(MoO4)4:xPr3+ (x = 0.005–0.045) micro phosphors were successfully prepared via a simple citrate assisted sol–gel method-ray powder diffraction, scanning electron microscope, photoluminescence spectra and decay life time measurement were utilized to study the properties of CaGd2(MoO4)4:xPr3+ phosphors well crystallized, fine and homogenous micro particles appeared at the heat treatment at 900 °C for 6 h. The results confirms that CaGd2(MoO4)4 host has tetragonally distorted scheelite structure with space group I41/a. Under the excitation wavelength of 449 nm Pr3+ activated CaGd2(MoO4)4 phosphor shows the red emission peaked at about 649 nm, which is attributed to 3P0–3F2 transition of Pr3+ ions. The CIE co-ordinates of CaGd2(MoO4)4:0.035Pr3+ phosphor are x = 0.702 and y = 0.289, which are evidently close to the standard NSTC value. The luminescence properties of as prepared phosphors indicates that CaGd2(MoO4)4:xPr3+ phosphor may be a potential red emitting material for W-LED applications.

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  • 28 March 2018

    The original version of the article was published without the first author contact details.

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Authors and Affiliations

  1. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam

    Saravana Kumar Jaganathan

  2. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam

    Saravana Kumar Jaganathan

  3. IJN-UTM Cardiovascular Engineering Center, Department of Clinical Sciences, Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, 81300, Skudai, Johor, Malaysia

    Saravana Kumar Jaganathan

  4. Department of Physics, St. Anne’s College of Engineering and Technology, Panruti, Tamilnadu, India

    Anthuvan John Peter

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  1. Saravana Kumar Jaganathan
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  2. Anthuvan John Peter
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Jaganathan, S.K., John Peter, A. Sol–gel synthesis and luminescence properties of CaGd2(MoO4)4:Pr3+ phosphors for white LED applications. J Mater Sci: Mater Electron 29, 8504–8511 (2018). https://doi.org/10.1007/s10854-018-8864-z

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