Temperature-dependent photoluminescence of novel Eu3+, Tb3+, and Dy3+ doped LaCa4O(BO3)3: Insights at low and room temperatures

Abeer S Altowyan; M B Coban; U H Kaynar; Jabir Hakami; M Ayvacikli; A Hiziroglu; N Can

doi:10.1016/j.apradiso.2024.111308

Temperature-dependent photoluminescence of novel Eu³⁺, Tb³⁺, and Dy³⁺ doped LaCa₄O(BO₃)₃: Insights at low and room temperatures

Appl Radiat Isot. 2024 Jun:208:111308. doi: 10.1016/j.apradiso.2024.111308. Epub 2024 Mar 28.

Authors

Abeer S Altowyan¹, M B Coban², U H Kaynar³, Jabir Hakami⁴, M Ayvacikli⁵, A Hiziroglu⁶, N Can⁷

Affiliations

¹ Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Kingdom of Saudi Arabia.
² Balikesir University, Faculty of Arts and Sciences, Department of Physics, Balikesir, Turkiye.
³ Bakırcay University, Faculty of Engineering and Architecture, Department of Fundamental Sciences, Menemen, Izmir, Turkiye; Bakırçay University, Biomedical Technologies Design Application and Research Center, Menemen, Izmir, Turkiye.
⁴ Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia.
⁵ Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu-Manisa, Turkiye.
⁶ Department of Management Information Systems, Izmir Bakirçay University, Izmir, 35665, Turkiye.
⁷ Jazan University, College of Science, Department of Physical Sciences, Physics Division, P.O. Box 114, 45142, Jazan, Kingdom of Saudi Arabia. Electronic address: ncan@jazanu.edu.sa.

PMID: 38555847
DOI: 10.1016/j.apradiso.2024.111308

Abstract

This study explores the structural and optical qualities of LaCa₄O(BO₃)₃ (LACOB) phosphors doped with Eu³⁺, Dy³⁺, and Tb³⁺ using a microwave-assisted sol-gel technique. It uncovers oxygen-related luminescence defects in LACOB, highlighting emission peaks at 489 and 585 nm for Dy³⁺, a distinct sharp peak at 611 nm for Eu³⁺ in the red spectrum, and a notable green emission for Tb³⁺ due to specific transitions. The photoluminescence (PL) analysis indicates that luminescence is optimized through precise doping, leveraging dipole interactions, and localized resonant energy transfer, which are influenced by dopant concentration and spatial configuration. Temperature studies show emission intensity variations, particularly noticeable below 100 K for Tb³⁺ doped samples, demonstrating the nuanced balance between thermal quenching and luminescence efficiency. This temperature dependency, alongside the identified optimal doping conditions, underscores the potential of these materials for advanced photonic applications, offering insights into their thermal behavior and emission mechanisms under different conditions.

Keywords: Concentration quenching; EDS; LaCa(4)O(BO(3))(3); Low temperature; Photoluminescence; Resonant energy transfer; XRD.