Mechanisms of Upconversion Luminescence of Er3+-Doped NaYF4 via 980 and 1530 nm Excitation

Yu Liu; Ziwen Zhou; Shaojian Zhang; Enming Zhao; Jing Ren; Lu Liu; Jianzhong Zhang

doi:10.3390/nano11102767

Mechanisms of Upconversion Luminescence of Er³⁺-Doped NaYF₄ via 980 and 1530 nm Excitation

Nanomaterials (Basel). 2021 Oct 19;11(10):2767. doi: 10.3390/nano11102767.

Authors

Yu Liu¹, Ziwen Zhou¹, Shaojian Zhang¹, Enming Zhao², Jing Ren¹, Lu Liu¹, Jianzhong Zhang¹

Affiliations

¹ Key Laboratory of In-Fiber Integrated Optics of Ministry of Education, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, China.
² School of Engineering, Dali University, Dali 671003, China.

Abstract

To date, the mechanisms of Er³⁺ upconversion luminescence via 980 and 1530 nm excitation have been extensively investigated; however, based on discussions, they either suffer from the lack of convincing evidence or require elaborated and time-consuming numerical simulations. In this work, the steady-state and time-resolved upconversion luminescence data of Er³⁺-doped NaYF₄ were measured; we therefore investigated the upconversion mechanisms of Er³⁺ on the basis of the spectroscopic observations and the simplified rate equation modeling. This work provides a relatively simple strategy to reveal the UCL mechanisms of Er³⁺ upon excitation with various wavelengths, which may also be used in other lanthanide ion-doped systems.

Keywords: 980 and 1530 nm excitation; Er3+; NaYF4; mechanisms; upconversion.

Abstract

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