Preparation and Luminescence Properties of Octahedral CeO₂∶Er³⁺ Nanophosphor

八面体结构纳米CeO 2 ∶Er 3+ 的合成及发光性质 Preparation and Luminescence Properties of Octahedral CeO 2 ∶Er 3+ Nanophosphor 张慧敏 ZHANG Hui-min 1 first-author 丛妍 CONG Yan 1 佟尧 TONG Yao 1 杨扬 YANG Yang 1 2 王月 WANG Yue 1 任柏宇 REN Bo-yu 1 董斌 DONG Bin 1 大连民族大学 物理与材料工程学院, 国家民委新能源与稀土资源利用重点实验室, 辽宁省光敏材料与器件重点实验室,辽宁 大连,116600 大连民族大学 物理与材料工程学院, 国家民委新能源与稀土资源利用重点实验室, 辽宁省光敏材料与器件重点实验室,辽宁 大连,116600 中国科学院长春光学精密机械与物理研究所 发光学及应用国家重点实验室, 吉林 长春 130033 中国科学院长春光学精密机械与物理研究所 发光学及应用国家重点实验室, 吉林 长春 130033 采用水热合成法制备了八面体结构纳米CeO 2 ∶Er 3+ ，并研究了稀土Er 3+ 离子掺杂对CeO 2 纳米晶的结构以及发光特性的影响。所合成的CeO 2 纳米晶具有八面体结构，结晶完好，粒度均匀。XRD和拉曼光谱测试结果表明所制备的CeO 2 纳米晶为面心立方萤石结构，稀土Er 3+ 离子的掺杂在基质晶格中产生了氧空位缺陷，并产生了晶格畸变。在980 nm激光激发下产生了稀土Er 3+ 离子绿色（ 2 H 11/2 ， 4 S 3/2 4 I 15/2 ）、红色（ 4 F 9/2 4 I 15/2 ）和近红外（ 4 I 11/2 ， 4 I 13/2 4 I 15/2 ）发光。随着稀土Er 3+ 离子掺杂浓度的变化，样品的发光光谱在可见光和近红外光范围产生了不同的猝灭浓度，这是由于掺杂浓度变化对Er 3+ -Er 3+ 之间的交叉驰豫过程产生了影响，Er 3+ 的能级布居变化引起了发光特性的改变。 Octahedral CeO 2 ∶Er 3+ nanophosphors with uniform crystallinity and fine crystalline were prepared using hydrothermal method. The structural and emission properties were investigated. The XRD and Raman spectra indicated that the as-prepared CeO 2 ∶Er 3+ samples were cubic fluorite structure of CeO 2 phase, and the oxygen vacancies were produced due to the substitution of Er 3+ for Ce 4+ . Green ( 2 H 11/2 , 4 S 3/2 4 I 15/2 ), red ( 4 F 9/2 4 I 15/2 ) and NIR ( 4 I 11/2 , 4 I 13/2 4 I 15/2 ) emissions under 980 nm laser diode excitation were also investigated, and they were strong affected by the doping concentration of Er 3+ . Different quenching concentrations are observed in the visible and NIR emission spectra, which is due to the alteration of populating channels in the cross relaxation processes of Er 3+ . CeO 2 ∶Er 3+ 纳米晶 水热合成法 发光 CeO 2 ∶Er 3+ nanophosphor hydrothermal method luminescence FUJIHARA S,OIKAWA M. Structure and luminescent properties of CeO2∶RE (RE=Eu3+ and Sm3+) thin films [J]. J. Appl. Phys., 2004,95(12):8002-8006. 杨春生,陈建华. 氧化铈和氧化镧在汽车尾气净化催化剂中的应用 [J]. 中国稀土学报, 2003,21(2):129-132. 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Structural characteristics,luminescent properties and energy transfer processes of CeO2∶Er3+ thin films [J]. J. Alloys Compd., 2016,664: 690-694. 10.3788/fgxb20204104.0386 O614.23+2;O614.43+2 国家自然科学基金（11974069）;辽宁省自然科学基金（20170540200，20180550070）;兴辽英才计划（XLYC1902113）;中央高校基本科研业务费专项资金（0220-110010）;大连民族大学大学生创新创业训练计划（201912026055）;大连民族大学"太阳鸟"学生科研项目（tyn2019295，2019296）资助 2020-01-19 2020-02-23 2020-03-02 2020-04-05 2020-08-11 4 41