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Mechanisms of Upconversion Luminescence of Er 3+ -Doped NaYF 4 via 980 and 1530 nm Excitation.

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Title: Mechanisms of Upconversion Luminescence of Er 3+ -Doped NaYF 4 via 980 and 1530 nm Excitation.
Authors: Liu, Yu1 (AUTHOR) thuliuyu2022@163.com, Zhou, Ziwen1 (AUTHOR) zw543202021@163.com, Zhang, Shaojian1 (AUTHOR) yanyi0131@hrbeu.edu.cn, Zhao, Enming2 (AUTHOR) zhaoem163@163.com, Ren, Jing1 (AUTHOR) ren.jing@hrbeu.edu.cn, Liu, Lu1 (AUTHOR) liulu@hrbeu.edu.cn, Zhang, Jianzhong1 (AUTHOR) zhangjianzhong@hrbeu.edu.cn
Source: Nanomaterials (2079-4991). Oct2021, Vol. 11 Issue 10, p2767. 1p.
Subjects: Photon upconversion, Luminescence, Time-resolved spectroscopy, Rate equation model
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. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
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. [ABSTRACT FROM AUTHOR]
ISSN:20794991
DOI:10.3390/nano11102767