ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Photoluminescence properties of NaSrBO₃:Eu³⁺ phosphor n-UV based for solid state lighting application prepared by combustion synthesis

S. T. Mhashakhetri, A. N. Yerpude, C. M. Nandanwar, K. N. Shinde, and S. J. Dhoble

Department of Physics, N. H. College, Bramhapuri, Dist-Chandrapur, India

E-mail: atulyerpude@gmail.com

Received: 17 May 2025  Accepted: 9 October 2025

Abstract:

Phosphor materials are highly researched in many field for their potential applications in various fields among these a series of NaSrBO₃:Eu³⁺ phosphor materials prepared through combustion synthesis and studied their properties. The structural and microstructure properties of phosphor material were analyzed using X-ray diffraction (XRD) and Field emission scanning electron microscopy (FE-SEM). The FESEM analysis confirmed the particle size smaller than 100 nm. Energy–Dispersive Spectroscopy determines the elemental composition of material such as sodium (Na), Strontium (Sr), Boron (B), and oxygen (O) present in a sample. Also, Fourier Transform Infrared Spectroscopy (FTIR) was used to study the surface properties of phosphor. The FTIR analysis verified the existence of BO₃ group on the phosphor’s surface. The phosphors’ optical properties were evacuated through Ultraviolet (UV) absorption, Photoluminescence (PL) spectroscopy, and decay time measurement. The host materials band gap was estimated at 4.83 eV. In PL, the emission spectrum shows distinct peaks at 594 nm 618 nm, 657 nm and 705 nm also were observed corresponding to transition ⁵D₀ → ⁷F₁ and ⁵D₀ → ⁷F₂ transition of Eu³⁺ ions. The optimal doping concentration of Eu³⁺in NaSrBO3 phosphor was determined by systematically studying the concentration quenching behavior, which helps identify the concentration that maximizes luminescence intensity. In decay analysis, the decay time observed that τ = 2.0107 ms for NaSrBO₃:Eu³⁺phosphor. Considering the above properties of NaSrBO₃:Eu³⁺ phosphors demonstrate significant potential for use in solid-state lighting applications, owing to their unique optical properties and efficient luminescence characteristics. These findings suggest that NaSrBO₃:Eu³⁺ phosphors could be promising material for the development of high- performance soli-state lighting.

Keywords: Photoluminescence; UV spectroscopy; Down-conversion phosphor; FTIR; SEM–EDS; Solid-state lighting

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04444-3

Chemical Papers 80 (1) 1015–1024 (2026)