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Dy3+-doped nano-glass ceramics comprising NaAlSiO4 and NaY9Si6O26 nanocrystals for white light generation |
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| Authors: | Ruchika Bagga Venu Gopal Achanta Ashutosh Goel José MF Ferreira Narinder Pal Singh Davinder Paul Singh Mauro Falconieri Gopi Sharma |
| Affiliation: | 1. Department of Physics, Kanya Maha Vidyalaya, Jalandhar, India;2. Department of Condensed Matter Physics, TIFR, Mumbai, India;3. R&D Sterlite Technologies Ltd., Aurangabad 431136, Maharashtra, India;4. Department of Ceramics and Glass Engineering, University of Aveiro, CICECO, 3810-193 Aveiro, Portugal;5. Punjab Technical University, Jalandhar, India;6. Department of Physics, Guru Nanak Dev University, Amritsar, India;7. ENEA C. R. Casaccia, via Anguillarese 301, 00123 Rome, Italy |
| Abstract: | 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. |
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