29
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Orange-red emitting europium doped strontium ortho-silicate phosphor prepared by a solid state reaction method.

      Read this article at

      ScienceOpenPublisherPubMed
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          In the present article we report europium-doped strontium ortho-silicates, namely Sr2 SiO4 :xEu(3+) (x = 1.0, 1.5, 2.0, 2.5 or 3.0 mol%) phosphors, prepared by solid state reaction method. The crystal structures of the sintered phosphors were consistent with orthorhombic crystallography with a Pmna space group. The chemical compositions of the sintered phosphors were confirmed by energy dispersive X-ray spectroscopy (EDS). Thermoluminescence (TL) kinetic parameters such as activation energy, order of kinetics and frequency factors were calculated by the peak shape method. Orange-red emission originating from the (5) D0 -(7) FJ (J = 0, 1, 2, 3) transitions of Eu(3+) ions could clearly be observed after samples were excited at 395 nm. The combination of these emissions constituted orange-red light as indicated on the Commission Internationale de l'Eclairage (CIE) chromaticity diagram. Mechanoluminescence (ML) intensity of the prepared phosphor increased linearly with increasing impact velocity of the moving piston that suggests that these phosphors can also be used as sensors to detect the stress of an object. Thus, the present investigation indicates that the piezo-electricity was responsible for producing ML in the prepared phosphor.

          Related collections

          Author and article information

          Journal
          Luminescence
          Luminescence : the journal of biological and chemical luminescence
          Wiley-Blackwell
          1522-7243
          1522-7235
          May 2017
          : 32
          : 3
          Affiliations
          [1 ] School of Studies in Physics & Astrophysics, Pt. Ravishankar Shukla University, Raipur, Chhattisgarh, 492010, India.
          Article
          10.1002/bio.3188
          27550083
          fd9b14a5-1597-4780-9246-0dfd994f66ec
          History

          CIE,mechanoluminescence,photoluminescence,strontium ortho-silicate,thermoluminescence

          Comments

          Comment on this article