Dy3+-doped nano-glass ceramics comprising NaAlSiO4 and NaY9Si6O26 nanocrystals for white light generation

Ruchika Bagga, Venu Gopal Achanta, Ashutosh Goel, José M.F. Ferreira, Narinder Pal Singh, Davinder Paul Singh, Mauro Falconieri, Gopi Sharma

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


The radiative emission properties of the Dy3+ ions in oxyfluoride glasses and glass ceramics have been investigated for the generation of white light. The X-ray diffraction pattern of the glass ceramics reveals the presence of NaAlSiO4 nanocrystals along with secondary phase of NaY9Si6O26 in the glass matrix after a suitable thermal treatment of the pristine glasses. Intense white light emission has been observed when the samples are excited with 350 nm light. Yellow to blue emission intensity ratios and chromaticity color coordinates have been determined from the visible luminescence spectra. All color coordinates are found to lie in the white region of the chromaticity color diagram proposing the suitability of the present studied materials for color display devices.

Original languageEnglish (US)
Pages (from-to)218-224
Number of pages7
JournalMaterials Science and Engineering: B
Issue number3
StatePublished - Feb 20 2013

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


  • Nano-crystalline glass-ceramic
  • Oxyfluoride glass
  • Photoluminescence spectroscopy
  • Raman spectroscopy
  • Rare earth


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