Synthesis and Up-conversion Emission Properties of Y0.795-xGdxYb0.2Tm0.005F3 Nanocrystals

CAO Chun-yan; QIN Wei-ping; ZHANG Ji-sen; XUN Xian-chao

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Synthesis and Up-conversion Emission Properties of Y_0.795-xGd_xYb_0.2Tm_0.005F₃ Nanocrystals

paper | 更新时间：2020-08-12

- Synthesis and Up-conversion Emission Properties of Y_0.795-xGd_xYb_0.2Tm_0.005F₃ Nanocrystals
- Chinese Journal of Luminescence Vol. 30, Issue 6, Pages: 738-743(2009)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所激发态物理重点实验室,吉林长春,130033
  2. 井冈山大学数理学院,江西吉安,343009
  3. 吉林大学电子科学与工程学院集成光电子国家重点实验室,吉林长春,130012
  4. 空军航空大学,吉林长春,130022
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：25 February 2009，
  
  Revised：02 January 1900，
  
  Published Online：30 December 2009，
  
  Published：30 December 2009
- 稿件说明：
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CAO Chun-yan, QIN Wei-ping, ZHANG Ji-sen, et al. Synthesis and Up-conversion Emission Properties of Y_0.795-xGd_xYb_0.2Tm_0.005F₃ Nanocrystals[J]. Chinese journal of luminescence, 2009, 30(6): 738-743.
DOI：

CAO Chun-yan, QIN Wei-ping, ZHANG Ji-sen, et al. Synthesis and Up-conversion Emission Properties of Y_0.795-xGd_xYb_0.2Tm_0.005F₃ Nanocrystals[J]. Chinese journal of luminescence, 2009, 30(6): 738-743. DOI：

摘要

利用水热法合成了氟化物Y

0.795-x

0.2

0.005

(x=0.0

0.1

0.2

0.5

0.8)纳米晶。研究了退火后系列样品的上转换发光性质以及激发态辐射跃迁寿命。在980 nm激发下

0.795-x

0.2

0.005

纳米微晶样品中观察到了Tm

的蓝光上转换发射及紫色、紫外发射增强现象

同时还观察到Gd

的

9/2

、

5/2

及

7/2

到基态

7/2

的发射。实验结果表明:样品半个波长量级的颗粒尺寸是Tm

紫外上转换增强以及Tm

到Gd

发生有效能量传递的重要因素。

Abstract

0.795-x

0.2

0.005

nanocrystals were synthesized through a hydrothermal method. After annealing in the air conditions

the upconversion (UC) emission properties under a 980 nm continuous wave semiconductor laser diode excitation were studied. The experimental results suggested that the violet and ultraviolet (UV) UC emission enhancement were observed in Y

0.795-x

0.2

0.005

nanocrystals

as well as the UC emissions from

9/2

5/2

and

7/2

states to the ground state

7/2

of Gd

were shown

too. The luminescent kinetic analysis implied that

under 980 nm excitation

can transfer energy to populate the

level of Tm

make UV

violet

and blue UC emissions obtained

further

the

multiplets of Gd

were populated through the energy transfer process

→

(Tm

7/2

→

(Gd

). At the same time

the energy transfer processes occurred between Gd

and Yb

or Tm

based on the energy matching conditions

leading to the above mentioned UV UC emissions of Gd

关键词

Keywords

references

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