Eur. Phys. J. Appl. Phys. 98, 50 (2023)
https://doi.org/10.1051/epjap/2023230073

Regular Article

Combustion synthesis of KZnPO₄: RE (RE = Dy³⁺ and Sm³⁺) Phosphors for n-UV based w-LEDs

¹ Department of Physics, N.H. College Bramhapuri, Dist-Chandrapur, 441206, Maharashtra, India
² N. H. College, Bramhapuri, Dist. Chandrapur, 441206, Maharashtra, India
³ Department of Physics, RTM Nagpur University, Nagpur 440033, India

^∗ e-mail: atulyerpude@gmail.com

Received: 3 April 2023
Received in final form: 24 May 2023
Accepted: 8 June 2023
Published online: 7 July 2023

Abstract

In this work, KZnPO₄:Dy³⁺ and KZnPO₄:Sm³⁺ phosphors are synthesized using the Combustion technique. The phosphor XRD and photoluminescence properties were studied. The XRD was used to confirm the orthorhombic phase with the space group P n a 21. The PL emission spectra of the synthesized KZnPO₄:Dy³⁺ phosphor shows a strong emission at 482 and 574 nm under 350 nm excitation, which is ascribed due to ⁴F_9/2→⁶H_15/2 and ⁴F_9/2→⁶H_13/2 electronic transitions of the Dy³⁺ ions, respectively. When the KZnPO₄:Sm³⁺ phosphor was excited at 402 nm, the emission spectra exhibited prominent bands located at 562 and 597 nm. The CIE coordinates show that the current phosphors have high colour purity. The KZnPO₄:Dy³⁺ and Sm³⁺ phosphors provide an excellent candidate for n-UV-based w-LEDs.