Effect of Eu²⁺ Activator on the Structural and Optical Properties of BaBrX(X= F, Cl, I) Synthesized via Hydrothermal Method

Abstract:

Barium halide activated with Eu is a typical phosphor material used in imaging plates for computed radiography applications. In this study, BaBrX: Eu (X = Cl, I) was synthesized via the hydrothermal technique. The aim of this study is to further explore the feasibility of the hydrothermal method for synthesizing phosphor materials. This was determined by studying the effect of Eu addition on the structural and optical properties of BaBrX (X = Cl, I). X-ray diffraction (XRD) was employed to determine the crystallinity of the prepared samples, while optical properties were observed using photoluminescence (PL) spectroscopy. The sharp, narrow, and high-intensity peaks of XRD diffractogram indicated that all samples exhibited good crystallinity. The addition of the Eu element as an activator resulted in a blue-shift with broad and higher intensity of the main emission peak for several samples. This study demonstrates that the addition of the Eu element to the host materials has altered the structural properties and improved the optical properties of the prepared samples, significantly demonstrating the feasibility of the hydrothermal method for synthesizing phosphor materials.

• Periodical: Engineering Headway (Volume 15)
• Pages: 39-44
• DOI: https://doi.org/10.4028/p-1QqZNW
• Online since: January 2025
• Authors: Izura Izzuddin*, Siti Aishah Ahmad Fuzi, Sapizah Rahim
• Keywords: Barium Halides, Eu Activator, Hydrothermal, Phosphor, PL Emission, X-Ray Diffraction (XRD)

References

[1] A. Jestin Lenus, D. Sornadurai, K. Govinda Rajan, B. Purniah, Luminescence behaviour of Eu2+-doped BaClI and BaBrI, Mater. Lett. 57 (2002) 635–638.

DOI: 10.1016/s0167-577x(02)00843-1

[2] H. Ohuchi, A. Yamadera, Possible application of an imaging plate to space radiation dosimetry., J. Radiat. Res. 43 Suppl (2002) 74–77.

DOI: 10.1269/jrr.43.s71

[3] Z. Yan, T. Shalapska, E.D. Bourret, Czochralski growth of the mixed halides BaBrCl and BaBrCl:Eu, J. Cryst. Growth. 435 (2016) 42–45.

DOI: 10.1016/j.jcrysgro.2015.11.032

[4] H.P. Beck, New mixed halide compounds MFX of divalent rare earths (M = Sm, Eu, Tm, and Yb; X = Cl, Br, and I), J. Solid State Chem. 23 (1978) 213–217.

DOI: 10.1016/0022-4596(78)90067-1

[5] A. Rupasov, A. Shalaev, R. Shendrik, Growth of BaBrI Crystals by the Czochralski Method, Cryst. Growth Des. 20 (2020) 2547–2552.

DOI: 10.1021/acs.cgd.9b01678

[6] A.A. Shalaev, R. Shendrik, A.S. Myasnikova, A. Bogdanov, A. Rusakov, A. Vasilkovskyi, Luminescence of BaBrI and SrBrI single crystals doped with Eu2+, Opt. Mater. (Amst). 79 (2018) 84–89.

DOI: 10.1016/j.optmat.2018.03.017

[7] I. Izura Izzuddin, S.A.A. Fuzi, S. Rahim, Feasibility study of Phosphor material synthesis process based on Barium halides via hydrothermal technique (2023).

DOI: 10.1088/1757-899x/1285/1/012008

[8] S. Hesse, J. Zimmermann, H. Von Seggern, X. Meng, C. Fasel, R. Riedel, Synthesis and functionality of the storage phosphor BaFBr: Eu2+, J. Appl. Phys. 105 (2009).

DOI: 10.1063/1.3086648

[9] R. Shendrik, A. Myasnikova, A. Rupasov, A. Shalaev, Role of electron and hole centers in energy transfer in BaBrI crystals, Radiat. Meas. 122 (2019) 17–21.

DOI: 10.1016/j.radmeas.2019.01.008