Sunlight-activated long-persistent luminescence in the near-infrared from Cr3+-doped zinc gallogermanates

Zhengwei Pan; Yi Ying Lu; Feng Liu

doi:10.1038/nmat3173

Sunlight-activated long-persistent luminescence in the near-infrared from Cr³⁺-doped zinc gallogermanates

Zhengwei Pan^*, Yi Ying Lu, Feng Liu

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1288 Scopus citations

Abstract

Visible-light persistent phosphors are being widely used as self-sustained night-vision materials because of their sufficiently strong and long afterglow (>10 h) and their ability to be excited by sunlight as well as room light. In contrast, persistent phosphors for near-infrared (NIR) wavelengths are lacking. Here we report a series of Cr³⁺-doped zinc gallogermanate NIR persistent phosphors that exhibit strong emission at 650g1,000 nm, extending beyond the typical 690g750 nm, and with a super-long afterglow of more than 360 h. These new NIR persistent phosphors are all-weather materials that can be rapidly, effectively and repeatedly charged by natural sunlight in almost all kinds of outdoor environment. Seconds to minutes of sunlight activation can result in more than two weeks of persistent NIR light emission. This new series of NIR persistent materials have potential applications in night-vision surveillance, solar energy utilization and in vivo bio-imaging.

Original language	English
Pages (from-to)	58-63
Number of pages	6
Journal	Nature Materials
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/nmat3173
State	Published - Jan 2012
Externally published	Yes

Bibliographical note

Funding Information:
We acknowledge financial support from the US Office of Naval Research (N00014-07-1-0060), the National Science Foundation (CAREER DMR-0955908), the American Chemical Society Petroleum Research Fund (PRF 50265-DN10) and the University of Georgia Research Foundation. We thank R. S. Meltzer for discussions.

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1038/nmat3173

Cite this

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title = "Sunlight-activated long-persistent luminescence in the near-infrared from Cr3+-doped zinc gallogermanates",

abstract = "Visible-light persistent phosphors are being widely used as self-sustained night-vision materials because of their sufficiently strong and long afterglow (>10 h) and their ability to be excited by sunlight as well as room light. In contrast, persistent phosphors for near-infrared (NIR) wavelengths are lacking. Here we report a series of Cr3+-doped zinc gallogermanate NIR persistent phosphors that exhibit strong emission at 650g1,000 nm, extending beyond the typical 690g750 nm, and with a super-long afterglow of more than 360 h. These new NIR persistent phosphors are all-weather materials that can be rapidly, effectively and repeatedly charged by natural sunlight in almost all kinds of outdoor environment. Seconds to minutes of sunlight activation can result in more than two weeks of persistent NIR light emission. This new series of NIR persistent materials have potential applications in night-vision surveillance, solar energy utilization and in vivo bio-imaging.",

author = "Zhengwei Pan and Lu, \{Yi Ying\} and Feng Liu",

note = "Funding Information: We acknowledge financial support from the US Office of Naval Research (N00014-07-1-0060), the National Science Foundation (CAREER DMR-0955908), the American Chemical Society Petroleum Research Fund (PRF 50265-DN10) and the University of Georgia Research Foundation. We thank R. S. Meltzer for discussions.",

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