Phase transformation and morphology tuning of β-NaYF4: Yb3+, Er3+ nanocrystals through K+ ions codoping

doi:10.1088/1674-1056/24/3/037801

›› 2015, Vol. 24 ›› Issue (3): 37801-037801.doi: 10.1088/1674-1056/24/3/037801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Phase transformation and morphology tuning of β-NaYF₄: Yb³⁺, Er³⁺ nanocrystals through K⁺ ions codoping

梁志琴^{a b}, 赵谡玲^{a b}, 崔越^{a b}, 田丽娇^{a b}, 张俊杰^{a b}, 徐征^{a b}

a Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China;
b Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China

收稿日期:2014-07-28 修回日期:2014-10-16 出版日期:2015-03-05 发布日期:2015-03-05
基金资助:
Project supported by the National High Technology Research and Development Program of China (Grant No. 2013AA032205), the National Natural Science Foundation of China (Grant No. 51272022), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2012JBZ001).

Phase transformation and morphology tuning of β-NaYF₄: Yb³⁺, Er³⁺ nanocrystals through K⁺ ions codoping

Liang Zhi-Qin (梁志琴)^{a b}, Zhao Su-Ling (赵谡玲)^{a b}, Cui Yue (崔越)^{a b}, Tian Li-Jiao (田丽娇)^{a b}, Zhang Jun-Jie (张俊杰)^{a b}, Xu Zheng (徐征)^{a b}

a Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing 100044, China;
b Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China

Received:2014-07-28 Revised:2014-10-16 Online:2015-03-05 Published:2015-03-05
Contact: Zhao Su-Ling E-mail:slzhao@bjtu.edu.cn
Supported by:
Project supported by the National High Technology Research and Development Program of China (Grant No. 2013AA032205), the National Natural Science Foundation of China (Grant No. 51272022), and the Fundamental Research Funds for the Central Universities, China (Grant No. 2012JBZ001).

摘要/Abstract

摘要： In this work, a simple method to modulate the crystal phase and morphology with a large amount of K⁺ ions codoping is proposed. The phase changes to the mixture of β-NaYF₄ and β -KYF₄ with increasing the content of K⁺ ions to 80 mol%. When it exceeds 80 mol%, β -NaYF₄ disappears gradually and β -KYF₄ dominates with a poor crystalline. In addition, the morphology changes from nanosphere to nanoplate, and then to nanoprism, which indicates that a higher content of K⁺ ions favors the growth rates along [0001] than the [10-10] of the nanocrystals. Additionally, the upconversion (UC) luminescence properties and the ratio of red/green (R/G) UC intensity of samples with different phases and morphologies are detected, which makes it possible to tune the UC fluorescence by varying the concentration of K⁺ ions.

关键词: upconversion fluorescence, NaYF₄:Yb, Er, K⁺ ions codoping

Abstract: In this work, a simple method to modulate the crystal phase and morphology with a large amount of K⁺ ions codoping is proposed. The phase changes to the mixture of β-NaYF₄ and β -KYF₄ with increasing the content of K⁺ ions to 80 mol%. When it exceeds 80 mol%, β -NaYF₄ disappears gradually and β -KYF₄ dominates with a poor crystalline. In addition, the morphology changes from nanosphere to nanoplate, and then to nanoprism, which indicates that a higher content of K⁺ ions favors the growth rates along [0001] than the [10-10] of the nanocrystals. Additionally, the upconversion (UC) luminescence properties and the ratio of red/green (R/G) UC intensity of samples with different phases and morphologies are detected, which makes it possible to tune the UC fluorescence by varying the concentration of K⁺ ions.

Key words: upconversion fluorescence, NaYF₄:Yb, Er, K⁺ ions codoping

中图分类号: (Absorption and reflection spectra: visible and ultraviolet)

78.40.-q

74.25.Gz (Optical properties) 42.70.-a (Optical materials) 78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters)

梁志琴, 赵谡玲, 崔越, 田丽娇, 张俊杰, 徐征. Phase transformation and morphology tuning of β-NaYF₄: Yb³⁺, Er³⁺ nanocrystals through K⁺ ions codoping[J]. , 2015, 24(3): 37801-037801.

Liang Zhi-Qin (梁志琴), Zhao Su-Ling (赵谡玲), Cui Yue (崔越), Tian Li-Jiao (田丽娇), Zhang Jun-Jie (张俊杰), Xu Zheng (徐征). Phase transformation and morphology tuning of β-NaYF₄: Yb³⁺, Er³⁺ nanocrystals through K⁺ ions codoping[J]. Chin. Phys. B, 2015, 24(3): 37801-037801.

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Phase transformation and morphology tuning of β-NaYF₄: Yb³⁺, Er³⁺ nanocrystals through K⁺ ions codoping

Phase transformation and morphology tuning of β-NaYF₄: Yb³⁺, Er³⁺ nanocrystals through K⁺ ions codoping

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