Synthesis and exploration of intricate optical and thermal attributes of Sm3+ doped novel borate phosphors

Authors

Vidya Saraswathi A, Manipal Institute of Applied Physics
Pratheeksha H M, Manipal Institute of Applied Physics
Kiran R, Manipal Institute of Applied Physics
A. Princy, SSN College of Engineering, Kalavakkam

Document Type

Article

Publication Title

Ceramics International

Abstract

This paper focuses on the structural, morphological, luminescence and temperature-dependent emission properties of novel Sm³⁺ doped CaB2O4(CBO- Sm) phosphors synthesized via solid-state reaction route. The structural analysis showed the orthorhombic crystal structure and unaltered phase of the host even upon doping with Sm³⁺ ions. Diffuse reflectance established the characteristic peaks of Sm³⁺, and the sample has an optical band gap of 3.85 eV. The emission spectra have 4 different peaks at 568 nm, 603 nm, 648 nm, and 709 nm under 404 nm excitation. The highest intense peak observed at 603 nm showed quenching beyond 0.75 mol% of dopant concentration, owing to dipole-dipole energy transfer. The reddish-orange emission has high purity with a CCT value around 1760 K. The temperature-dependent luminescence analysis proved nearly stable emission CBO- Sm phosphors even at 170 °C with high activation energy. Thus, synthesized samples are suitable for thermal sensing and optoelectronic device applications.

First Page

19012

Last Page

19022

DOI

10.1016/j.ceramint.2025.02.081

Publication Date

6-1-2025

Recommended Citation

Saraswathi A, Vidya; H M, Pratheeksha; R, Kiran; and Princy, A., "Synthesis and exploration of intricate optical and thermal attributes of Sm3+ doped novel borate phosphors" (2025). Open Access archive. 13204.
https://impressions.manipal.edu/open-access-archive/13204