Efficient Color Tuning of Upconversion Luminescence from Core-Shell Oxysulfide Nanoparticles
Joint Authors
Xing, Mingming
Tian, Ying
Jiao, Jianxin
Feng, Xin
Peng, Yong
Luo, Xixian
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-10-07
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
The Y2O2S:Er3+@Y2O2S:Yb3+,Ho3+ core-shell up-conversion (UC) nanoparticles were successfully synthesized by the homogeneous co-precipitation method.
The Y2O2S:Er3+@Y2O2S:Yb3+,Ho3+ core-shell nanoparticles exhibit bright green emissions under 980 nm excitation, while the triple-ion doped Y2O2S:Er3+,Yb3+,Ho3+ sample presents mainly red emissions.
The intensity ratio of green-to-red emission of the core-shell and conventional triple-ion doped samples are 2.8 and 0.3, respectively.
Investigations on the UC mechanisms show that emissions from Er3+ and Ho3+ ions are achieved simultaneously in the core-shell nanoparticles.
This is due to the efficient energy transfers of Yb3+→Ho3+ within the shell layer and Yb3+→Er3+ between the shell and the core.
While the triple-ion doped Y2O2S: Er3+,Yb3+,Ho3+ sample exhibits mainly the emissions of Er3+ along with weak luminescence of Ho3+ ion.
Since the cross relaxation between Er3+ and Ho3+ ions in the Y2O2S:Er3+,Yb3+,Ho3+ nanoparticles can effectively suppress the emissions of Ho3+ ions.
Yet, in the core-shell structure, this cross relaxation can be successfully restrained in the core-shell structure where Er3+ is in the core and Ho3+ is in the shell.
Therefore, the construction of core-shell structure can improve the luminescence efficiency and provide a route for adjustment of emission color.
American Psychological Association (APA)
Tian, Ying& Jiao, Jianxin& Feng, Xin& Xing, Mingming& Peng, Yong& Luo, Xixian. 2019. Efficient Color Tuning of Upconversion Luminescence from Core-Shell Oxysulfide Nanoparticles. Journal of Nanomaterials،Vol. 2019, no. 2019, pp.1-6.
https://search.emarefa.net/detail/BIM-1182886
Modern Language Association (MLA)
Tian, Ying…[et al.]. Efficient Color Tuning of Upconversion Luminescence from Core-Shell Oxysulfide Nanoparticles. Journal of Nanomaterials No. 2019 (2019), pp.1-6.
https://search.emarefa.net/detail/BIM-1182886
American Medical Association (AMA)
Tian, Ying& Jiao, Jianxin& Feng, Xin& Xing, Mingming& Peng, Yong& Luo, Xixian. Efficient Color Tuning of Upconversion Luminescence from Core-Shell Oxysulfide Nanoparticles. Journal of Nanomaterials. 2019. Vol. 2019, no. 2019, pp.1-6.
https://search.emarefa.net/detail/BIM-1182886
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1182886