Photoluminescence and thermoluminescence characteristics of CaAl2Si4O12:Dy3+new phosphor prepared by combustion synthesis

C. M. Mehare, N. S. Dhoble, Chandan Ghanty, S. J. Dhoble

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The present study reported synthesis of Dy3+activated CaAl2Si4O12 phosphor via combustion techniques. The formation of crystal structure and surface morphology was analysed by X-ray diffraction pattern and scanning electron microscopy. The photoluminescence spectrum reveals, the prepared phosphor material exhibits an excellent emission at 422 nm, with two peaks around 479 nm (blue region) and 575 nm (yellow region) monitor at excitation wavelength of near UV 369 nm. In addition, CIE color chromaticity confirms the emission locate at the blue light region, revealed suitability of prepared phosphor in UV excitable blue emission for white light emitting diode. The Thermoluminescence characterization of prepared phosphor irradiated with a 60 Co γ- ray source at dose rate of 7.2 kGy/hr was further carried out using a Nucleonix TL 1009I TL reader. The tapping parameter such as activation energy (E) and frequency factor (s) was calculated using Ilich's method.

Original languageEnglish
Article number129417
JournalJournal of Molecular Structure
Volume1227
DOIs
StatePublished - 5 Mar 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

  • CIE chromaticity
  • Combustion synthesis
  • Rietveld, Photoluminescence
  • Thermoluminescence
  • w-LED

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