结合籽晶法和添加矿化剂硝酸铵,通过均相沉淀合成和后续煅烧实现了(Y,Eu)2O3单分散球形颗粒(直径范围110～550 nm)的可控合成.通过XRD、FE-SEM、TEM和PLE/PL分析等手段对产物进行了系统表征.发现采用籽晶法和添加矿化剂硝酸铵可以促进球形颗粒长大.碱式碳酸盐前驱体经600℃煅烧分解为立方晶(Y,Eu)2O3,且经1000℃煅烧后(Y,Eu)2O3依然继承球形形貌特征.所得多晶(Y,Eu)2O3球形荧光颗粒在242nm激发下于615 nm处呈现最强红色荧光发射(Eu3+的5D0→7F2跃迁).荧光粉的荧光性能呈现明显的尺寸依存性.增大球形颗粒尺寸减小了荧光寿命(1.15～1.57 ms)和荧光不对称因子[I(5D0-→ 7F2)/I(5D0→ 7F1)],但增强了荧光发射强度.
参考文献
| [1] | Li JG;Li XD;Sun XD;Ikegami T;Ishigaki T.Uniform colloidal spheres for (Y1-xGdx)(2)O-3 (x=0-1): Formation mechanism, compositional impacts, and physicochemical properties of the oxides[J].Chemistry of Materials: A Publication of the American Chemistry Society,20086(6):2274-2281. |
| [2] | Ji-Guang Li;Xiaodong Li;Xudong Sun.Monodispersed Colloidal Spheres for Uniform Y2O3:Eu~(3+) Red-Phosphor Particles and Greatly Enhanced Luminescence by Simultaneous Gd~(3+) Doping[J].The journal of physical chemistry, C. Nanomaterials and interfaces,200831(31):11707-11716. |
| [3] | Ji-Guang Li;Qi Zhu;Xiaodong Li.Colloidal processing of Gd_2O_3:Eu~(3+) red phosphor monospheres of tunable sizes: Solvent effects on precipitation kinetics and photoluminescence properties of the oxides[J].Acta materialia,20119(9):3688-3696. |
| [4] | Kang YC.;Bin Park S.;Roh HS..Preparation of Y2O3 : Eu phosphor particles of filled morphology at high precursor concentrations by spray pyrolysis[J].Advanced Materials,20006(6):451-453. |
| [5] | Yun Chan Kang;Hyun Sook Roh.Sodium Carbonate Flux Effects on the Luminescence Characteristics of (Y_(0.5)Gd_(0.5))_2O_3: Eu Phosphor Particles Prepared by Spray Pyrolysis[J].Journal of the American Ceramic Society,20012(2):447-449. |
| [6] | Zong, Lingbo;Xu, Pengfei;Ding, Yunji;Zhao, Kun;Wang, Zumin;Yan, Xuecheng;Yu, Ranbo;Chen, Jun;Xing, Xianran.Y2O3:Yb3+/Er3+ Hollow Spheres with Controlled Inner Structures and Enhanced Upconverted Photoluminescence[J].Small,201523(23):2768-2773. |
| [7] | Miao, Hui;Ji, Ruonan;Hu, Xiaoyun;Han, Linzi;Hao, Yuanyuan;Sun, Qian;Zhang, Dekai;Fan, Jun;Bai, Jintao;Hou, Xun.Y2O3: Eu3+, Tb3+ spherical particles based anti-reflection and wavelength conversion bi-functional films: Synthesis and application to solar cells[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2015:74-79. |
| [8] | Lv, Ruichan;Yang, Piaoping;He, Fei;Gai, Shili;Yang, Guixin;Lin, Jun.Hollow Structured Y2O3:Yb/Er-CuxS Nanospheres with Controllable Size for Simultaneous Chemo/Photothermal Therapy and Bioimaging[J].Chemistry of Materials: A Publication of the American Chemistry Society,20152(2):483-496. |
| [9] | Hongshang peng;Hongwei Song;Baojiu Chen;Jiwei Wang;Shaozhe Lu;Xianggui Kong;Jiahua Zhang.Temperature dependence of luminescent spectra and dynamics in nanocrystalline Y_2O_3: Eu~(3+)[J].The Journal of Chemical Physics,20037(7):3277-3282. |
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