A low temperature approach for photo/cathodoluminescent Gd2O2S:Tb (GOS:Tb) nanophosphors

• Published in: Journal of the American Ceramic Society Vol. 102; no. 6; pp. 3296 - 3306
• Main Authors: Wang, Xuejiao, Meng, Qinghong, Li, Meiting, Wang, Xiaojun, Wang, Zhihao, Zhu, Qi, Li, Ji‐Guang
• Format: Journal Article
• Language: English; Japanese
• Published: Columbus Wiley 01.06.2019; Wiley Subscription Services, Inc
• Subjects: Ammonium hydroxide; Ammonium sulfate; Aqueous solutions; Ceramic powders; Electron beams; Electron irradiation; Fluorescence; GOS; Low temperature; low‐temperature processing; Luminescence; Nanophosphors; nanopowder; Organic chemistry; oxysulfide; Sintering (powder metallurgy); Thermal stability

Titrating the aqueous solution of equimolar RE(NO3)3 and (NH4)2SO4 with NH4OH to pH~9 at ~4°C produced an amorphous precursor that yielded phase‐pure and well‐dispersed RE2O2S nanopowder (RE = Gd0.99Tb0.01; GOS:Tb) via a RE2O2SO4 intermediate upon annealing in H2. The powders calcined at the typical...