Nonoxide Sol–Gel Synthesis of Terbium-Doped Silicon Nitride Phosphors
Abstract:Exposure of solutions of Tb(N(SiMe3)2)3 with SiCl(NEt2)3 in tetrahydrofuran to dry ammonia results in polymeric xerogels. Heating these gels in ammonia leads to amorphous Tb:SiNx phosphors that exhibit bright green luminescence under UV irradiation. MAS-NMR and combustion analysis reveal that the phosphors are silicon nitride materials analogous to those typically produced by sol–gel routes. Photoluminescence behavior is similar to that of Tb:SiNx or Tb:SiO2 films produced by ion implantation that show good electroluminescence activity.
Document Type: Research Article
Affiliations: School of Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K.
Publication date: April 1, 2010