Abstract
Dy3+ doped calcium aluminum borosilicate (CABS) glasses have been synthesized via quick melt quench technique. CABS: xDy3+ glasses (x = 0.1, 0.5, 1, 1.5 and 2 mol%) were subjected to various morphological and photoluminescence studies. X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy were conducted to study the structural and bonding nature of the undoped glass. The excitation spectra of Dy3+ doped CABS glasses under 574 nm emission show many sharp peaks amongst which the transition from 6H15/2 → 6P7/2 (351 nm) had the highest intensity. Under 351 nm excitation, glasses exhibit sharp peaks in the blue, yellow and red regions corresponding to the transitions 4F9/2 → 6H15/2, 6H13/2, 6H11/2 and 6H9/2 respectively. The dipole–dipole nature of the interaction between the Dy3+ ions is confirmed via Dexter theory and Inokuti-Hirayama (I-H) model. CIE coordinates estimated from the emission profiles of these glasses under 351 nm excitation fall in the white region. Considering that these glasses exhibit sharp visible emission under UV excitation, have stable yellow to blue (Y/B) ratios and fast decays with intense energy transfers, we propose to utilise these glasses for white light generation and other white light LED (w-LED) and solid-state lighting (SSL) applications.
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The data that support the findings of this study are not openly available due to reasons of sensitivity and are available from the corresponding author upon reasonable request.
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All authors contributed to the study, conception and design of the manuscript. The author credits are as follows: 1. Ravita: Conceptualisation, synthesis, data analysis, writing. 2. Aman Prasad: Data analysis, review. 3. Pooja Rohilla: Characterisation, data analysis. 4. Rajat Bajaj: Synthesis, characterisation. 5. Anu: Data analysis. 6. Rajesh Punia: Review. 7. Allam Srinivasa Rao: Conceptualisation, supervision, analysis, review.
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Ravita, Prasad, A., Rohilla, P. et al. Luminescence Studies on Dy3+ Doped Calcium Aluminum Borosilicate (CABS) Glasses for White Light Emission and Applications in w-LEDs. J Fluoresc (2023). https://doi.org/10.1007/s10895-023-03389-8
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DOI: https://doi.org/10.1007/s10895-023-03389-8