Comparative investigations of gadolinium based borate glasses doped with Dy3+ for white light generations

Rajagukguk, Juniastel (2019) Comparative investigations of gadolinium based borate glasses doped with Dy3+ for white light generations. Solid State Sciences, 89. pp. 50-56. ISSN 1293-2558

[thumbnail of full text.pdf]
Preview
Text
full text.pdf - Published Version

Download (4MB) | Preview

Abstract

Gadolinium-based borate glasses doped with Dy3+ ions were developed by melt quenching technique for white light generation. The title glasses were examined by XRD, optical absorption spectra and Photoluminescence spectra. From photoluminescence emission spectra, the higher intensity peak was observed at 575 nm (4F9/2 → 6H13/2) for present glass samples. The experimental decay rate (τexp) of 4F9/2 transition of Dy3+ ions were found to be a decline in increasing of Dy2O3 content. The Inokuti-Hirayama (IH) model is used to explain the non-exponential decay time by putting S = 6, which confirmed that the energy is transfer through cross-relaxation is of dipole–dipole nature among the Dy2O3. The values of color coordinates match with the range of white light of chromaticity (CIE) diagram. The color chromaticity coordinates (u, v) and color correlated temperature (CCT) values for present glasses were correlated with standards, which are closely related to the standard, therefore, the prepared glasses might be helpful for different photonic applications such as white LEDs.

Item Type: Article
Keywords: Gadolinium;Borate;Glasses;Spectra;Luminescence
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC120 Descriptive and Experimental mechanics
Q Science > QC Physics > QC350 Optics. Light
Q Science > QD Chemistry > QD450 Physical and theoretical chemistry
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam
Depositing User: Mrs Catur Dedek Khadijah
Date Deposited: 30 Dec 2020 06:54
Last Modified: 30 Dec 2020 06:54
URI: https://digilib.unimed.ac.id/id/eprint/41056

Actions (login required)

View Item
View Item