Influence of the Sc cation substituent on the structural properties and energy transfer processes in GAGG:Ce crystals

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

The influence of the Sc cation substituent on the structural and luminescence properties of GAGG:Ce crystals was studied. Unit cell parameters and space groups were obtained using XRD analysis. The chemical compositions of the crystals were determined using SEM-EDX and TEM-EDX techniques. Structures were refined by the Rietveld method and the distribution of Al/Ga/Sc cations between octahedral and tetrahedral sites was obtained. The influence of Sc on the electronic band structure and the energy of the 4f and 5d Ce3+ levels is shown. The modification of the band structure induced by the Sc electronic states results in the suppression of Gd emission and enhancement of Ce3+ emission at low temperatures. The Ce3+ emission decay is accelerated under high-energy excitation of the Sc-containing GAGG compound.

Detaljer

Författare
  • Dmitry Spassky
  • Nina Kozlova
  • Evgeniia Zabelina
  • Valentina Kasimova
  • Nataliya Krutyak
  • Alisa Ukhanova
  • Vladimir A. Morozov
  • Anatolii V. Morozov
  • Oleg Buzanov
  • Kirill Chernenko
  • Sergey Omelkov
  • Vitali Nagirnyi
Enheter & grupper
Externa organisationer
  • Lomonosov Moscow State University
  • Laboratory of Hybrid Nanostructured Materials, NUST MISiS
  • Skolkovo Institute of Science and Technology
  • University of Tartu
  • Fomos-Materials
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Materialkemi
Originalspråkengelska
Sidor (från-till)2621-2631
Antal sidor11
TidskriftCrystEngComm
Volym22
Utgåva nummer15
StatusPublished - 2020
PublikationskategoriForskning
Peer review utfördJa