NaYF4∶Er3+的水热合成及其紫外上转换发光性能

何奇; 樊君; 胡晓云; 叶岩溪; 孙涛

doi:10.3788/fgxb20123302.0122

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NaYF₄∶Er³⁺的水热合成及其紫外上转换发光性能

材料合成及性能研究 | 更新时间：2020-08-12

- NaYF₄∶Er³⁺的水热合成及其紫外上转换发光性能
- Hydrothermal Synthesis of NaYF₄∶Er³⁺ and Its Ultraviolet Up-conversion Light Emitting Property
- 发光学报 2012年33卷第2期页码：122-127
- 作者机构：
  
  1. 西北大学化工学院,陕西西安,710069
  2. 西北大学物理学系,陕西西安,710069
- 作者简介：
- 基金信息：
  
  国家自然科学基金(20876125)、高等学校博士点基金(20096101110013)、陕西省自然科学基金(2010JZ002)、西北大学研究生创新基金(09YJC2
- DOI：10.3788/fgxb20123302.0122
  中图分类号： O482.31;O614.33
- 收稿日期：2011-11-28，
  
  修回日期：2011-12-09，
  
  网络出版日期：2012-02-10，
  
  纸质出版日期：2012-02-10
- 稿件说明：
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何奇, 樊君, 胡晓云, 叶岩溪, 孙涛. NaYF4∶Er3+的水热合成及其紫外上转换发光性能[J]. 发光学报, 2012,33(2): 122-127

HE Qi, FAN Jun, HU Xiao-yun, YE Yan-xi, SUN Tao. Hydrothermal Synthesis of NaYF4∶Er3+ and Its Ultraviolet Up-conversion Light Emitting Property[J]. Chinese Journal of Luminescence, 2012,33(2): 122-127
何奇, 樊君, 胡晓云, 叶岩溪, 孙涛. NaYF4∶Er3+的水热合成及其紫外上转换发光性能[J]. 发光学报, 2012,33(2): 122-127 DOI： 10.3788/fgxb20123302.0122.

HE Qi, FAN Jun, HU Xiao-yun, YE Yan-xi, SUN Tao. Hydrothermal Synthesis of NaYF4∶Er3+ and Its Ultraviolet Up-conversion Light Emitting Property[J]. Chinese Journal of Luminescence, 2012,33(2): 122-127 DOI： 10.3788/fgxb20123302.0122.

摘要

采用水热法制备了Er

掺杂的NaYF

上转换发光材料

X射线衍射结果表明

当反应温度为180 ℃和200 ℃时

晶体属于六方晶型和四角晶型混合相态;当反应温度为220 ℃时

该晶体属于纯六方晶型结构。SEM和TEM观察发现

晶粒为六角形

样品颗粒分散性好

平均粒径约为100 nm。荧光光谱测试结果表明

当激发波长为500 nm时

样品发射出紫外光。从Er

能级图谱可以得出

基态电子

15/2

首先跃迁到

11/2

与

3/2

能级上

随即经过能量转移上转换过程(ETU)分别发射出310 nm和340 nm的紫外光。结合Er

发光机理可以推出上转换峰310 nm和340 nm均属于双光子过程。研究结果表明

以NaYF

为基质掺杂Er

产生的紫外上转换光在生物成像、光催化发应及生物标记等方面有着广阔的应用前景。

Abstract

doped NaYF

up-conversion luminescence material was successfully prepared by hydrothermal method. The X-ray diffraction (XRD) indicates that when the reaction temperature is 180 ℃ or 200 ℃

the crystal structure is a mixture of hexagon and quadrangle

when the reaction temperature is 220 ℃

the crystal shows a hexagon phase structure. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) results indicate that the crystal grain has a hexagon structure

and possesses an average size of about 100 nm with a uniform distribution. The fluorescence spectra show that under the exciting wavelength of 500 nm

the sample emits ultraviolet light. It can be concluded from the energy level diagram that the ground state

15/2

electrons of Er

will first transmit to

11/2

and

3/2

levels

and then give out the 310 nm and 340 nm ultraviolet light through the energy transmit up-conversion (ETU) process

respectively. Considering the up-conversion emission mechanism

both the 310 nm and 340 nm up-conversion peaks can be characterized as biphotonic processes. The research results demonstrate that the Er

doped NaYF

exhibites an ultraviolet up-conversion light emitting property;and it has a promising way in biomedical imaging

photocatalytic reaction and biomark process

etc.

关键词

Keywords

references

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