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

Studies on photoluminescence and thermoluminescence properties of yttrium aluminium perovskite (YAP-YAlO₃) doped with cerium(III)

Ravi Shrivastava and Rupali Shil Kundu

Department of Physics, Shri Shankaracharya Professional University, Bhilai, India

E-mail: ravishrivastava95@gmail.com

Received: 18 April 2023  Accepted: 22 July 2023

Abstract:

The present article reports the synthesis of yttrium aluminium perovskite (YAP-YAlO₃) doped with 1.0, 1.5, 2.0, 3.0 and 3.5 mol% of cerium(III) (Ce³⁺) using a high-temperature solid-state reaction technique. X-ray diffraction (XRD) pattern of the sample with 3.0 mol% concentrations Ce³⁺ was observed which was matched significantly with crystallographic open database card (COD-96-100-8924) already reported for YAlO₃ with hexagonal structure and space group P 63/m m c (194). Photoluminescence (PL) emission spectra of the samples prepared were recorded at 356 nm, which exhibited a prominent emission peak centred at 468 nm. This peak was attributed to 5d (²A_1g) → ²F_{5/2, 7/2} transition in Ce³⁺. This emission results in blue-coloured emission which was confirmed using colour chromaticity (CIE) diagram. The thermoluminescence glow curve of the sample that provided the optimum PL intensity was recorded for various UV exposure times. The activation energy was found as 1.01 eV and 0.90 eV for the two de-convoluted peaks, respectively, and the frequency factor was 2.25 × 10¹⁰ and 1.66 × 10⁰⁷ per second for respective peaks. The higher values of the frequency factor indicated that the phosphor material under discussion may be a good candidate for LED application. This work may provide a prominent phosphor candidate, useful in LED and thermoluminescence dosimetry application also.

Graphical abstract

Keywords: Photoluminescence; Luminescence–thermoluminescence; Long-persistent phosphors; Luminescence–rare earth ions; Kinetic parameters

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-023-03005-w

Chemical Papers 77 (11) 7155–7161 (2023)