在微波场作用下，首次快速合成了球形亚超细尺寸的 ＣａＳ： Ｍｎ２＋，Ｅｕ２＋深红色荧光 体，ＳＥＭ照片显示其粒径为２５０～４００ｎｍ，并可观察到纳米粒子的团聚现象，呈现零维纳米材 料的特性．实验结果证实，Ｍｎ２＋与Ｅｕ２＋离子间存在着能量传递过程，因而Ｍｎ２＋对Ｅｕ２＋ 的发光具有明显的敏化和增强作用．
CaS:Mn2+, Eu2+ phosphor materials were firstly synthesized in microwave field. The materials synthesized were characterized by XRD, SEM and the fluorescent spectroscopy. The experimental results of XRD
and SEM show that the CaS:Mn2+, Eu2+ phosphors possess the crystalline structures with sphere, the mean grain sizes of phosphors are
250-400nm. The introduction of Mn2+ into CaS:Eu2+, makes the fluorescence of the CaS:Mn2+, Eu2+ phosphor efficiently
enhanced since the energy transfer from Mn2+ into Eu2+ ions. This new synthesis method compared to the traditional high temperature
solid reaction exhibits interesting features, such as rapid reactions without H2-H2S protective atmosphere, phosphors with high purity,
submicro-scale crystallines, and higher efficient luminescence.
参考文献
| [1] | 张汉林，刘韩星，欧阳世翁. 材料导报，1996， 4: 44--47. [2] 张迈生, 陈瑞耘, 杨燕生. 发光学报, 1996, 17(Supp): 74--77. [3] 张迈生, 祁家雄, 杨燕生(ZHANG Mai-Sheng, et al). 无机材料学报(Journal of Inorganic Materials), 1999, 14 (3): 479--482. [4] 张迈生，杨燕生, 陈接胜, 等. 中山大学学报(自然科学版)， 1998, 37 (2): 128--130. [5] Meng X P, Xu W G, Tang S Q, et al. Chin. Chem. Lett., 1992, 3: 69--70. [6] 宋天佑，徐家宁，徐如人, 等. 高等学校化学学报， 1992, 13 (10): 1209--1210. [7] Nobohiko Yamashita, Shuji Maekawa, Kaizo Nakamura. Jpn. J. Appl. Phys., 1990, 9 (29): 1729--1732. [8] Nathalie Ruelle, Mai Pham-Thi, Claude Fouassier, et al. Jpn. J. Appl. Phys., 1992, 31: 2786--2790. [9] 张迈生，杨燕生，区瑞明. 中山大学学报(自然科学版)，1998, 37 (4): 76--79. [10] 李彬，欧昌俊, 田一光, 等. 化学研究与应用，1993, 5 (4): 14--19. |
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