A novel approach for preparation of Sr3Al2O6:Eu2+, Dy3+ nanoparticles by sol-gel-microwave processing

作者：Tian Yuming; Zhang Ping^*; Zheng Zhentai; Chai Yuesheng

来源：Materials Letters, 2012, 73: 157-160.

DOI：10.1016/j.matlet.2011.12.100

• Sr3Al2O6
• Red long afterglow
• Phosphors
• Microwave processing
• Sol-gel preparation
• Nanoparticles

Red long afterglow Sr3Al2O6:Eu2+, Dy3+ (S3A2O-ED) nanopowders have been prepared by using the conventional sol-gel process and the microwave heating technique. XRD confirmed a cubic Sr3Al2O6 single phase for the phosphors. The phosphor powders have a rod-like morphology with little aggregation and the nanorods with diameters of about 80 nm and lengths of about 1 mu m. The S3A2O-ED phosphors exhibited a broad excitation band chiefly in visible range and a red broad emission band of main peak at 612 nm under the excitation of 473 nm. Especially the S3A2O-ED phosphors prepared in 20 min of heating time at 680 W exhibited the strongest luminescent intensity and longest decay time.

• 出版日期2012-4-15
• 单位太原科技大学; 河北工业大学; 天津大学