Intense upconversion red emission from Gd-doped NaErF4:Tm-based core/shell/shell nanocrystals under 980 and 800 nm near infrared light excitations

Jung Eun Choi; Donghwan Kim; Ho Seong Jang

doi:10.1039/C8CC09031A

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Intense upconversion red emission from Gd-doped NaErF₄:Tm-based core/shell/shell nanocrystals under 980 and 800 nm near infrared light excitations†

Jung Eun Choi,^ab Donghwan Kim^bc and Ho Seong Jang

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Author affiliations

* Corresponding authors

^a Materials Architecturing Research Center, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea
E-mail: msekorea@kist.re.kr

^b Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea

^c KU-KIST Graduate School of Energy and Environment (Green School), Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea

^d Division of Nano & Information Technology, KIST School, Korea University of Science and Technology (UST), Seoul 02792, Republic of Korea

Abstract

Bright and single band red-emitting NaErF₄:Tm,Gd-based upconversion nanophosphors (UCNPs) were successfully synthesized by the formation of a core/intermediate shell/active shell structure. The NaErF₄:Tm,Gd/NaYF₄:Ca,Yb/NaYF₄:Nd,Yb core/shell/shell UCNPs exhibit intense red light under both 980 and 800 nm near infrared light excitations.

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Article information

DOI: https://doi.org/10.1039/C8CC09031A
Article type: Communication
Submitted: 13 Nov 2018
Accepted: 19 Dec 2018
First published: 20 Dec 2018

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Chem. Commun., 2019,55, 2261-2264

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Intense upconversion red emission from Gd-doped NaErF₄:Tm-based core/shell/shell nanocrystals under 980 and 800 nm near infrared light excitations

J. E. Choi, D. Kim and H. S. Jang, Chem. Commun., 2019, 55, 2261 DOI: 10.1039/C8CC09031A

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