Enhancing orange-reddish emission of the Sm3+-doped ZnO-B2O3-SLS glasses for the potential glass phosphor material

• Main Authors: Wei Mun Cheong, Wei Mun Cheong, Mohd Zaid, Mohd Hafiz, Yap Wing Fen, Yap Wing Fen, Tan Sin Tee, Tan Sin Tee, Matori, Khamirul Amin, Zhi Wei Loh, Zhi Wei Loh, Mayzan, Mohd Zul Hilmi
• Format: Article
• Language: English
• Published: Elsevier 2023
• Subjects: T Technology (General)
• Online Access: http://eprints.uthm.edu.my/9149/1/J15861_6aeeb8fb6e256072c5d04d90714f6b2d.pdf; http://eprints.uthm.edu.my/9149/; https://doi.org/10.1016/j.optlastec.2022.108937

In this paper, a series of [Sm2O3]x[(ZnO)0.5 (B2O3)0.1 (SLS)0.4]1-x, where × = 0, 0.01, 0.02, and 0.03 in weight fraction was fabricated via melt-quenching method. The influence of the samarium ion (Sm3+) concentration on the structural and optical properties was investigated. X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) confirmed the samples’ glassy (amorphous) behavior. The optical absorption intensity enhanced as the dopant increased, whereas the optical band gap reduced with the progression of Sm3+ concentration. The sample’s refractive index and Urbach energy range from 2.145 to 2.203 and 0.682 eV to 0.713 eV, respectively. From the photoluminescence studies, 3 wt% Sm3+-doped samples indicate the most intense emission in the orange-reddish region among the other samples. The calculated CIE coordinates for Sm3+ doped ZnO–B2O3–SLS glasses are approximate (0.57, 0.43), near the Amber LED NSPAR 70BS produced by Nichia Corporation. In addition, the CCT of the Sm3+-doped samples at about ~ 1750 K reveals prepared glass samples have bright orange-reddish emission. These findings indicate that Sm3+-doped in ZnO-B2O3-SLS has enhanced its orange-reddish emission and potential as an orange-reddish glass phosphor material in optoelectronic devices such as glass phosphor for LEDs.