Facile template free synthesis of KLa(MoO4)2: Eu3+, Tb3+ microspheres and their multicolor tunable luminescence

被引:64
作者
Hou, Li [1 ]
Cui, Shaobo [1 ]
Fu, Zuoling [1 ]
Wu, Zhijian [2 ]
Fu, Xihong [3 ]
Jeong, Jung Hyun [4 ]
机构
[1] Jilin Univ, Coll Phys, State Key Lab Superhard Mat, Changchun 130012, Peoples R China
[2] Changchun Inst Appl Chem, Chinese Acad Sci, State Key Lab Rare Earth Resources Utilizat, Changchun 130022, Peoples R China
[3] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China
[4] Pukyong Natl Univ, Dept Phys, Pusan 608737, South Korea
基金
新加坡国家研究基金会; 中国博士后科学基金; 美国国家科学基金会;
关键词
LIGHT-EMITTING-DIODES; RARE-EARTH IONS; ENERGY-TRANSFER; HYDROTHERMAL SYNTHESIS; WHITE LEDS; PHOTOLUMINESCENCE PROPERTIES; COLLOIDAL SPHERES; PHOSPHATE-GLASSES; UP-CONVERSION; NANOCRYSTALS;
D O I
10.1039/c3dt53151a
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Trivalent rare-earth (RE3+ = Eu3+, Tb3+) ion activated KLa(MoO4)(2) microspheres have been synthesized at 180 degrees C via a facile hydrothermal route without using any templates, surfactant, or other organic additives. X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), photoluminescence (PL), and photoluminescent excitation spectra (PLE) were employed to characterize the samples. It is found that the pH value in the initial solution is responsible for crystal phase, shape determination and emission intensity of final products. The possible formation mechanism for products with uniform spheres has been presented. Furthermore, a systematic study on the photoluminescence of RE3+ (RE3+ = Eu3+, Tb3+) doped KLa(MoO4)(2) samples has been explored in order to obtain the multicolor tunable emission by varying the Tb3+/Eu3+ ratio. The tunable luminescence may be potentially applied in fields such as solid state lighting and field emission displays.
引用
收藏
页码:5382 / 5392
页数:11
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