Ce，Pr离子双掺LuAG透明陶瓷制备及光学性能  

Fabrication and Optical Properties of Ce,Pr Co-doped LuAG Transparent Ceramics

作　　者：周鼎[1,2] 施鹰[1] 范灵聪[1] 林德宝[1] 孙泽清 徐家跃 ZHOU Ding SHI Ying FAN Ling-Cong LIN De-Bao SUN Ze-Qing XU Jia-Yue(Department of Electronics and Information Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China Institute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China)

机构地区：[1]上海大学材料科学与工程学院,电子信息材料系,上海200072 [2]上海应用技术大学材料科学与工程学院,晶体生长研究所,上海201418

出　　处：《无机材料学报》2016年第10期1099-1102,共4页Journal of Inorganic Materials

基　　金：国家自然科学基金(61475097);上海市联盟计划项目(LM201521)~~

摘　　要：以NH_4OH+NH_4HCO_3混合溶液作为复合沉淀剂,利用反向滴定共沉淀法制备了不同浓度Ce,Pr共掺杂LuAG沉淀前驱体,并研究了Pr掺杂浓度为0.25at%,Ce掺杂浓度分别为0、0.1at%、0.2at%和0.3at%的LuAG透明陶瓷的光学性能。沉淀前驱体经马弗炉1200℃煅烧2 h后所得粉体的分散性较好,一次颗粒尺寸约为60 nm。该粉体经干压和冷等静压成型后,在H_2气氛1800℃下烧结6 h制备出透明陶瓷,经双面抛光后透明陶瓷在800 nm波长处直线透过率达到82%。X射线激发的发射光谱表明,共掺使Pr离子5d-4f的发射能量传递给Ce离子,有助于提高LuAG透明陶瓷在550 nm发光中心的发光强度。0.2at%Ce和0.25at%Pr共掺杂时,透明陶瓷的发光强度达到最大。Cerium and Praseodymium co-doped Lu3A15012 nanocrystalline powders were synthesized by reverse ti- tration, using ammonium hydroxide CNH4OH） and ammonium hydrogen carbonate （NHaHCO3） mixed precipitator. The optical properties of 0.25at%Pr： LuAG ceramics doped with 0, 0. l at%, 0.2at% and 0.3at% Ce^3＋ ions were measured. The Ce, Pr： LuAG powders showed a weak agglomeration with a primary particle size of about 60 nm after calcining at 1200℃ for 2 h. Ce, Pr co-doped LuAG transparent ceramics were obtained after green compacts were cold isostatic pressed and sintered in flowing H2 atmosphere at 1800 ℃ for 6 h. The in-line transmittance of the double face polished Ce, Pr co-doped LuAG ceramic at 800 nm wavelength was 82%. The X-ray excited emission spectrum showed that the emission intensity at 550 nm wavelength was enhanced in Ce, Pr co-doped LuAG transparent ceramics by energy transfer from 5d-4f of Pr3＋ ions to Ce^3＋ ions, and the emission intensity reached maximum value when the dopant con- tents were 0.2at%Ce and 0.25at%Pr.

关 键 词：Ce离子 Pr离子 LuAG透明陶瓷 光学性能 

分 类 号：TB383[一般工业技术—材料科学与工程]