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

Enhanced luminescence intensity of Y₂O₃:Er³⁺ phosphor by using combustion preparation process and incorporating Gd³⁺ ions

Raunak Kumar Tamrakar, Kanchan Upadhyay, Suraj Butoliya, and P. B. Taunk

Department of Applied Physics, Bhilai Institute of Technology, Durg, India

E-mail: Kanchan.chemistry@gmail.com

Received: 8 January 2023  Accepted: 19 March 2023

Abstract:

Solution combustion synthesis method was imployed to synthesize Y₂O₃ codoped with Er³⁺ and Gd³⁺ phosphors. The X-ray diffraction pattern of the phosphor confirms presence of cubic phase with crystal size of around 12 nm. Electron microscopic techniques were used for further confirming the morphology and size of the phosphor. It was characterized for optical behaviour by recording the emission spectra under 275 nm UV excitation. The spectra have strong emission peak centred at 546 nm along with small peaks in red region centred at 611 and 617 nm. After doping of Gd³⁺ no variation in peak position was observed it alters the emission intensity. This increase in emission intensity is due to energy transfer between Gd³⁺ and Er³⁺ ion. The mechanism of photoluminescence behaviour has also been discussed. The proposed model can be extended (or applicable) to explain the fluorescence dynamics in other nanomaterial doped with Er³⁺ and Gd³⁺ under UV excitation.

Keywords: Gd3+ codoped; Combustion synthesis; XRD; Optical behaviour; Photoluminescence mechanism

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-02796-2

Chemical Papers 77 (8) 4469–4472 (2023)