Fluorescence Properties and Synthesis of Green-Emitting Tb3+-Activated Amorphous Calcium Silicate Phosphor by Ultraviolet Irradiation of 378 nm
X-ray diffraction patterns of products prepared by heating Tb3+-activated calcium silicate hydrate (CSH) phosphor. Tb/Ca atomic ratio, (a) 0, (b)–(e) 0.5. Heating temperature (°C), (a), (b) room temperature, (c) 800, (d) 900, and (e) 1000. ⚫: CSH, ○: β-Wollastonite.