Sinter‐Crystallization and Optical Characterization of Dy³⁺: ZnO‐B₂O₃‐RHA Glass‐Ceramics

Abstract

In this current study, the behavior of dysprosium oxide (Dy 2 O 3 ) doped willemite glass-ceramic (WGC) derived from ZnO-B 2 O 3 -RHA: Dy 2 O 3 glasses and rice-husk ash (RHA) works as the active alternative silica has been studied. The fusions of the ternary host system of oxide components doped with rare earth oxide go through the melt-quench technique followed by solid-state sintering on the compacted glass frits. The sintered green samples are characterized utilizing the physical, structural, and optical properties to investigate the effect of different sintering temperatures on the samples accordingly. The bulk density of WGC increases together with the increment of sintering temperature from 2.571 to 2.940 g cm -3 . Meanwhile, the increment of sintering temperature escalates the crystallization of the main crystalline phase, Zn 2 SiO 4 , corroborated by the enlargement of average crystallite size from 161 to 550 nm. Furthermore, the emission activity in the WGC also intensifies on the green emission region (524 nm) accordingly. This fabricated Dy 3+ :WGC contributes to the nomination as the potential solid-state lighting material.