Issue 24, 2021

A red-light-chargeable near infrared MgGeO3:Mn2+,Yb3+ persistent phosphor for bioimaging and optical information storage applications

Abstract

Near-infrared (NIR) persistent phosphors have attracted extensive research interest owing to their distinct wavelength features and self-sustained luminescence properties. However, the high-energy ultraviolet light that is consistently used to charge these phosphors has compromised some promising applications, especially for biomedical imaging. Herein, we have successfully utilized long-wavelength 635 nm red-light to achieve intense NIR persistent luminescence in a MgGeO3:Mn2+,Yb3+ phosphor. Seconds to minutes of 635 nm red-light charging can result in long-lasting NIR afterglow at around 680 nm for longer than 12 h. The photon trapping and detrapping processes in the MgGeO3:Mn2+,Yb3+ phosphor were investigated in detail by varying the 635 nm red laser output power and the excitation duration, which indicate that a two-photon upconversion charging process is responsible for NIR persistent luminescence upon red-light illumination. The red-light-charging capability and self-sustained NIR luminescence properties make this material perfectly suited to applications across a wide number of fields, such as acting as ideal optical probes for deep-tissue bio-imaging and developing optical data storage technology for information security systems.

Graphical abstract: A red-light-chargeable near infrared MgGeO3:Mn2+,Yb3+ persistent phosphor for bioimaging and optical information storage applications

Supplementary files

Article information

Article type
Research Article
Submitted
13 sep 2021
Accepted
24 okt 2021
First published
25 okt 2021

Inorg. Chem. Front., 2021,8, 5149-5157

A red-light-chargeable near infrared MgGeO3:Mn2+,Yb3+ persistent phosphor for bioimaging and optical information storage applications

W. Wang, S. Yan, Y. Liang, D. Chen, F. Wang, J. Liu, Y. Zhang, K. Sun and D. Tang, Inorg. Chem. Front., 2021, 8, 5149 DOI: 10.1039/D1QI01158H

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