A novel approach for preparation of Sr₃Al₂O₆:Eu^2 +, Dy^3 + nanoparticles by sol-gel-microwave processing

详细信息	查看全文 | 推荐本文 |

• 作者：Yuming Tian^a ; Ping Zhang^b ; ^{zptai@163.com} ; Zhentai Zheng^c ; Yuesheng Chai^a
• 关键词：Sr3Al2O6 ; Red long afterglow ; Phosphors ; Microwave processing ; Sol&ndash ; gel preparation ; Nanoparticles
• 刊名：Materials Letters
• 出版年：2012
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：15 April, 2012
• 卷：73
• 期：Complete
• 页码：157-160
• 文件大小：598 K

摘要

Red long afterglow Sr₃Al₂O₆:Eu^2 +, Dy^3 + (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 渭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.