• Sol–gel synthesis and photoluminescence of CaTi1–𝑥Zr𝑥O3 : Pr3+ phosphors

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      https://www.ias.ac.in/article/fulltext/boms/033/01/0079-0083

    • Keywords

       

      Perovskite; luminescence; calcium titanate phosphor; sol–gel synthesis.

    • Abstract

       

      CaTi1–𝑥Zr𝑥O3 : Pr3+ phosphors have been synthesized by sol–gel and solid state methods, with 𝑥 = 1/300, 2/300, 3/300, 4/300, 5/300, 6/300, 7/300, respectively. Powder X-ray diffraction (XRD), UV-visible absorption spectra, photoluminescent spectra (PL), and scanning electron microscopy (SEM) images are used to characterize the powder samples. The inverse absorption at 610 nm appearing in the UV-visible absorption spectra is due to the ${}^{1}D_{2} \rightarrow {}^{3}H_{4}$ characteristic emission of Pr3+. Changes in the emission spectra at 610 nm were agreed with those in UV-visible absorption spectra. The strongest red excitation obtained from CaTi1–𝑥Zr𝑥O3 : Pr3+ (𝑥 = 4/300) and CaTi1–𝑥Zr𝑥O3 : Pr3+ (𝑥 = 5/300) possesses the strongest emission at 610 nm, similar to the intensities of Ca(Ti1–𝑥Zr𝑥)O3 : Pr3+ (𝑥 = 3/300, 4/300, 6/300), which may be corresponded to the cell parameters of CaTi1–𝑥Zr𝑥O3 : Pr3+.

    • Author Affiliations

       

      Lixia Lin1 Bing Yan1

      1. Department of Chemistry, Tongji University, Siping Road 1239, Shanghai 200092, China
    • Dates

       
  • Bulletin of Materials Science | News

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