Mn2+掺杂NaFY4:Yb,Er晶体的形貌及发光性能研究

Mn²⁺掺杂NaFY₄:Yb,Er晶体的形貌及发光性能研究

庄  宇¹，毛春生²，赵丽君^2*

（1.大陆汽车电子（长春）有限公司 发动机动力系统部，吉林 长春130033；2.吉林大学材料科学与工程学院，吉林 长春 130025；）

摘 要：通过乙醇和油酸作为混合溶剂的溶剂热法合成了NaYF₄:Yb,Er晶体。采用X射线衍射仪（XRD），场发射扫描电镜(FESEM)以及光致发光检测（980nm激光源）和荧光光谱测试（Hitachi F-4500），表征了Mn²⁺离子掺杂量对NaYF₄:Yb,Er晶体的显微结构、形貌和发光性能的影响。结果表明：少量5 mol %Mn²⁺离子的掺入不会改变NaYF₄:Yb,Er晶体的物相，当Mn²⁺离子的掺杂量增大到10%~30 mol%，样品出现NaMn₃F₁₀相，形貌也发生转变，从纳米棒变为纳米片。Mn²⁺离子的掺入，使得NaYF₄:Yb,Er晶体的上转换荧光峰从在510nm~539nm和539nm~570nm这两个区间转换为635nm~690nm区间内，当掺杂浓度达到30 mol%时，上转换荧光峰全部转变为635nm~690nm区间内。

关键词：NaYF₄:Yb,Er；晶体；Mn²⁺离子；掺杂；形貌；发光性能

中图分类号：TB383；TG115.21⁺5.3；TG115.3⁺3  文献标识码：A   doi:10.3969/j.1000-6281.2013.06.004

Research on simultaneous morphology and upconversion fluorescence of NaYFa:Yb,Er crystals through Mn²⁺ ions doping

ZHUANG Yu¹，MAO Chun-sheng²，ZHAO Li-jun²*

（1. PESH, Continental Automotive Changchun Co Ltd, Changchun Jilin 130033；2. Colleges of Materials Science and Engineering, Jilin University, Changchun Jilin 130025,China）

Abstract:The  NaYF4:Yb，Er crystals doped with Mn²⁺ ions are synthesized by a facile solvothermal method, meanwhile the doping effects on the microstructure, morphology and the upconversion fluorescence emission are investigated in detail by X-ray diffractometer (XRD), Field emission scanning electron microscopy (FESEM) andfluorescenceFluorescence spectrum test. When a little dosage of 5 mol% Mn²⁺ ions is doped, the phase of NaYF4:Yb, Er crystals may keep the hexagonal phase. With increasing in the dosage of Mn²⁺ ions (10mol%~30mol%), the crystal structure of samples changes gradually from NaYF4 to NaMn₃F₁₀. The morphology also changed, from nanorods to nanometer sheet. The doping of Mn²⁺ making the upconversion fluorescence peak from 510 nm to 539nm and 539 nm to 570 nm is converted to 635 nm to 690 nm range, when doping concentration reached 30 mol %, the conversion fluorescence peak all into 635 nm to 690 nm range.

Keywords: NaYF4:Yb,Er；crystals；Mn²⁺ ions；doping；morphology；fluorescence

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