Color Stable Upconversion White Emission of KY3F10: Yb3+,Tm3+,Ho3+ Nanocrystals Under Single 980 nm Excitation

PANG Tao; WANG Yu; XIE Jian-ping

doi:10.3788/fgxb20183909.1233

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Color Stable Upconversion White Emission of KY₃F₁₀: Yb³⁺,Tm³⁺,Ho³⁺ Nanocrystals Under Single 980 nm Excitation

更新时间：2020-08-12

- Color Stable Upconversion White Emission of KY₃F₁₀: Yb³⁺,Tm³⁺,Ho³⁺ Nanocrystals Under Single 980 nm Excitation
- Chinese Journal of Luminescence Vol. 39, Issue 9, Pages: 1233-1238(2018)
- 作者机构：
  
  湖州师范学院理学院,浙江湖州,313000
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(11747312);Zhejiang Provi
- DOI：10.3788/fgxb20183909.1233
  CLC： O482.31
- Received：18 December 2017，
  
  Revised：26 April 2018，
  
  Published Online：16 April 2018，
  
  Published：05 September 2018
- 稿件说明：
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庞涛, 王玉, 谢建平. KY3F10:Yb3+,Tm3+,Ho3+纳米晶在单一980 nm辐射下的色稳定上转换白光[J]. 发光学报, 2018,39(9): 1233-1238

PANG Tao, WANG Yu, XIE Jian-ping. Color Stable Upconversion White Emission of KY3F10: Yb3+,Tm3+,Ho3+ Nanocrystals Under Single 980 nm Excitation[J]. Chinese Journal of Luminescence, 2018,39(9): 1233-1238
庞涛, 王玉, 谢建平. KY3F10:Yb3+,Tm3+,Ho3+纳米晶在单一980 nm辐射下的色稳定上转换白光[J]. 发光学报, 2018,39(9): 1233-1238 DOI： 10.3788/fgxb20183909.1233.

PANG Tao, WANG Yu, XIE Jian-ping. Color Stable Upconversion White Emission of KY3F10: Yb3+,Tm3+,Ho3+ Nanocrystals Under Single 980 nm Excitation[J]. Chinese Journal of Luminescence, 2018,39(9): 1233-1238 DOI： 10.3788/fgxb20183909.1233.

摘要

利用简单的水热法制备了立方相KY

∶15% Yb

，0.5% Tm

，0.2% Ho

上转换纳米晶。在980 nm激发下，获得接近等能白的上转换发光。上转换机理分析表明，蓝、绿、红光发射分别源自Yb

到Tm

和Ho

的能量传递。更重要的是，该上转换白光显示了良好的色稳定性。当泵浦功率由688 mW增加到1 688 mW，色差仅为0.027 5。其原因在于，一方面三基色发光的功率关系比较接近；另一方面蓝光的功率关系随泵浦功率的增加逐渐减小，而绿、红光的功率关系保持不变。蓝光的饱和现象可能与激光辐射所引起的热效应有关。

Abstract

Cubic KY

:15% Yb

0.5% Tm

0.2% Ho

upconversion nanocrystals were synthesized by a simple hydrothermal method. Under the excitation of 980 nm

the upconversion luminescence with chromaticity coordinates nearby equal energy white was obtained. The analysis of the upconversion mechanism shows that the blue

green

and red emissions originate from the energy transfer from Yb

to Tm

and Ho

respectively. More importantly

it is found that the upconversion white emission shows favorable color stability. When the pump power increases from 688 mW to 1 688 mW

the aberration is only 0.027 5. The reason is that

on the one hand

the power dependences of the three primary colors are relatively close to each other. On the other hand

the power dependence of the blue emission gradually decreases as the pump power increases

while the power dependences of the green and red emissions remain unchanged. The saturation of blue emission may be related to the thermal effect caused by laser radiation.

关键词

Keywords

references

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