Pradhan, Mangaraj and Mohapatra, Sushanta Kumar and Tarafder, Anal and Maharana, H. S. (2026) Emission Performance of Thermally Stable Dy3+ Doped Barium-Aluminosilicate Glass for White Light Emitting Diode. Ceramics International, 52 (12). pp. 20586-20596. ISSN 0272-8842

Full text not available from this repository. (Request a copy)

Abstract

A series of Dy3+-doped multi-component barium-aluminosilicate glasses with different concentrations (0, 0.2, 0.5 and 1 mol%) of Dy2O3were prepared by the conventional melt-quenching method at a melting temperature of 1600 oC. In order to understand thermal durability of the developed glasses, the temperature dependent luminescence study for the application possibility in high power white light emitting diodes (w-LEDs) has been thoroughly explored. The x-ray diffraction (XRD) patterns of the developed glasses reveal non-crystalline nature. The measured luminescence spectra displayed three distinct emission peaks at wavelengths of 483, 575, and 663 nm due to the electronic transition from higher energy state 4F9/2 to lower energy states 6H15/2, 6H13/2, and 6H11/2, respectivelyunder365 nm excitation wavelength. Further, it is worth noting that, the temperature dependence of the emission peak at 547 nm from Dy3+ activated barium aluminosilicate show an impressive 73-74% retention of peak intensity at elevated temperature of 150 oC as compared to 100% at 25 oC signifying its thermal stability. The correlated color temperature (CCT) with respect to the concentrations of Dy2O3 shows that, the 0.5Dy glass exhibit comparatively stable CCT value of 5444K from room temperature to elevated temperature (150 oC). Overall, on the basis of luminescence performance 0.5Dy glass is found to be promising for w-LED application. Keywords: Barium-aluminosilicate glass; Photoluminescence spectra; Thermal stability; Correlated color temperature; White-LED; Rare-earth doped glass

Item Type:	Article
Subjects:	Glass
Divisions:	Glass
Depositing User:	Ms Upasana Sahu
Date Deposited:	22 Sep 2026 07:02
Last Modified:	22 Sep 2026 07:02
URI:	https://cgcri.csircentral.net/id/eprint/5832

Actions (login required)

View Item