Growth Process and Upconversion Luminescence of NaLuF4:Yb3+/Tm3+ Nanocrystals

LI Yang-yang; LI Da-guang; ZHANG Dan; QIN Wei-ping

doi:10.3788/fgxb20183906.0764

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Growth Process and Upconversion Luminescence of NaLuF₄:Yb³⁺/Tm³⁺ Nanocrystals

更新时间：2020-08-12

- Growth Process and Upconversion Luminescence of NaLuF₄:Yb³⁺/Tm³⁺ Nanocrystals
- Chinese Journal of Luminescence Vol. 39, Issue 6, Pages: 764-770(2018)
- 作者机构：
  
  1. 吉林大学电子科学与工程学院,吉林长春,130012
  2. 长江师范学院化学化工学院重庆,408100
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(11274139,11474132)
- DOI：10.3788/fgxb20183906.0764
  CLC： O482.31
- Received：23 October 2017，
  
  Revised：21 November 2017，
  
  Published Online：04 December 2017，
  
  Published：05 June 2018
- 稿件说明：
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李洋洋, 李大光, 张丹等. 小尺寸NaLuF4:Yb3+/Tm3+纳米晶的生长及上转换发光[J]. 发光学报, 2018,39(6): 764-770

LI Yang-yang, LI Da-guang, ZHANG Dan etc. Growth Process and Upconversion Luminescence of NaLuF4:Yb3+/Tm3+ Nanocrystals[J]. Chinese Journal of Luminescence, 2018,39(6): 764-770
李洋洋, 李大光, 张丹等. 小尺寸NaLuF4:Yb3+/Tm3+纳米晶的生长及上转换发光[J]. 发光学报, 2018,39(6): 764-770 DOI： 10.3788/fgxb20183906.0764.

LI Yang-yang, LI Da-guang, ZHANG Dan etc. Growth Process and Upconversion Luminescence of NaLuF4:Yb3+/Tm3+ Nanocrystals[J]. Chinese Journal of Luminescence, 2018,39(6): 764-770 DOI： 10.3788/fgxb20183906.0764.

摘要

为了详细地探究NaLuF

纳米晶的生长过程，利用自主研发的可以精确控制实验参数的自动纳米合成仪制备了不同系列的NaLuF

：Yb

/Tm

纳米材料。对不同反应温度下（285，295，305℃）制备的样品进行物相分析，发现随着反应时间的增加，NaLuF

纳米晶均遵循相似的生长规律，即-相-相+-相均匀的-相聚集的-相。在不同温度下，均有一个时间段可以获得小尺寸（小于50 nm）、单分散、粒径分布窄的纯-NaLuF

纳米晶。另外，测试了不同温度下制备的-NaLuF

：Yb

/Tm

纳米材料的上转换发射光谱，结果表明随着反应温度的升高，样品的发光先增强后减弱。出现这种光谱规律可能是受晶体尺寸和结晶性两方面因素的影响。此外，样品在紫外区的高阶多光子发光很强。例如，361 nm发射峰强度大约是800 nm发射峰强度的2倍。

Abstract

In order to explore the growth process of NaLuF

nanocrystals in detail

we prepared a series of NaLuF

:Yb

/Tm

nanomaterials by using a self-developed automatic nanomaterial synthesizer which can precisely control the experimental parameters. The phase analysis of samples prepared at different reaction temperatures(285

295

305℃) shows that the NaLuF

nanocrystals follow the similar growth law with the increase of reaction time. We can obtain pure -NaLuF

nanocrystals with small size(less than 50 nm)

monodispersity

and narrow size distribution at different temperatures. On the other hand

we measured the upconversion spectra of -NaLuF

:Yb

/Tm

nano-materials which prepared under 285

295

and 305℃. These results indicate that the luminescence intensity of samples increase first and then decrease with the increase of reaction temperature. In addition

the luminescence of sample in ultraviolet region is stronger than that of the near-infrared region. For example

the intensity of 361 nm emission peak is twice large compared to that of 800 nm emission peak

which makes the nano-material suitable for near-infrared excited ultraviolet sensitive materials.

关键词

Keywords

references

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