2004Pr3+:Y2SiO5中的反斯托克斯荧光谱及其对基态Stark分裂能级的确定张衍亮,孙真荣,李玉琼,丁良恩,王祖赓光谱学与波谱学教育部重点实验室,华东师范大学物理系,上海2000 2摘要掺杂在晶体Y2Si 5(YS )中的Pr3+,运用脉冲激光激发3H4"lD2跃迁,粒子通过非辐射能量转移从能级lD2转移到能级3P0,测得了对应于3P0"3H4...
先取一定量的y2o3加入稀hno3(硝酸与水1:1稀释)中配置y(no3)3溶液,按计量比准确量取一定量pr(no3)3加入y(no3)3溶液,电炉加热煮沸结晶,110℃烘箱中干燥数小时得到白色无水硝酸盐;加入蒸馏水和无水乙醇比例为1:3的混合液使其完全溶解,加入一定量的正硅酸乙酯并搅拌30min并陈化12h,得到5.0%(mol)pr3+:y2sio...
一种Pr3+:Y2SiO5/TiO2/ACF可见光响应型光催化复合膜及其制备方法,采用溶胶-凝胶法将上转换荧光材料与纳米TiO2复合,通过负载于活性炭纤维(ACF)表面,制备了Pr3+:Y2SiO5/TiO2/ACF复合膜,该方法将上转换复合材料均匀地、牢固地负载到ACF表面,同时载体活性炭纤维在微观下属于网状结构,一方面使上转换复合材料附载更充...
摘要 本发明公开一种Pr3+:Y2SiO5/ZnO强化可见光催性能的复合光催化剂及其制备方法,所述复合光催化剂是利用超声‑水热法将纳米氧化锌包覆在纳米上转换发光材料Pr3+:Y2SiO5表面得到。该结构能够有效传递Pr3+:Y2SiO5发射出的紫外光到达ZnO表面,同时能够在ZnO内腔产生更多的能级缺陷,减少空穴‑电子对的...
[33] for the fabricated 60GeO2-(30-x)BaO-xBaF2-(10-y)Ga2O3-yPr2O3 (x = 0, 1, 3, 5, 10; y = 0.1, 0.25, 0.5 (mol%)) glasses, upon 450 nm excitation, near-infrared (NIR) luminescence bands centered at 1.05 μm (3P0 → 1G4/1D2 → 3F3,3F4), 1.35 μm (1G4 →...
Spectral hole burning and holography in an Y2SiO5:Pr3+ crystal Holographic detection of spectral holes is demonstrated in a crystalline host material with signal-to-noise ratios of up to 10 4 . Hole burning occurs in t... K Holliday,M Croci,E Vauthey,... - 《Phys.rev.b》 被引量: ...
Notably, sample Ca3Y2Ge3O12:0.04Sm3+:0.003Pr3+ exhibited better thermal stability and larger activation energy (Ea) by compariton of Ca3Y2Ge3O12:0.04Sm3+. Finally, the WLED device based on Ca3Y2Ge3O12:0.04Sm3+:0.003Pr3+, (Ba, Sr)2SiO4: Eu2+ and an ultraviolet chip of 395...
ca(no3)2cndjvkvnhdvtio2h3bo3sio2pr2o3混 合研 磨研 磨马弗炉高温灼烧高温灼烧冷却、粉碎、研磨catisio3:pr3+图2 高温固相法工艺流程图2.2.2 改进固相法用电子天平按计算的摩尔比称量各原料:tio2(分析纯)、sio2(分析纯)、ca(no3)2(分析纯)、h3bo3(分析纯)、pr2o3(99.99),精度为0.0001g。将原料在稀...
Co-doping to extend the operating range of luminescence thermometers. The case of Y2SiO5:Pr3+, Tb3+ J. Alloys Compd. (2024) J.Huet al. Strong red upconversion luminescence and optical thermometry of Yb3+/Er3+Co-doped β-Ba2ScAlO5phosphor ...
The blue upconversion via Pr~(3+)∶Y_2SiO_5 crystals under excitation of 579 nm laser was investigated at room temperature. 测量了Pr3+∶Y2SiO5晶体的吸收谱,标定了室温下Pr3+在Y2SiO5晶体4f2组态内的能级。 2) Pr Pr 1. Simultaneous Analysis of La, Ce,Pr, Sm and Nd in Tea with ICP-...