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Mechanisms of Upconversion Luminescence of Er-Doped NaYF Via 980 and 1530 Nm Excitation

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Date 2021 Oct 23
PMID 34685210
Citations 1
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Abstract

To date, the mechanisms of Er 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 Er-doped NaYF were measured; we therefore investigated the upconversion mechanisms of Er 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 Er upon excitation with various wavelengths, which may also be used in other lanthanide ion-doped systems.

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