Abstract
In conventional photostimulable storage phosphors, the optical information written by X-ray or ultraviolet irradiation is usually read out as a visible photostimulated luminescence (PSL) signal under the stimulation of a low-energy light with appropriate wavelength. Unlike the transient PSL, here we report a new optical read-out form, photostimulated persistent luminescence (PSPL) in the near-infrared (NIR), from a Cr3+-doped LiGa 5O 8 NIR persistent phosphor exhibiting a super-long NIR persistent luminescence of more than 1,000 h. An intense PSPL signal peaking at 716 nm can be repeatedly obtained in a period of more than 1,000 h when an ultraviolet-light (250-360 nm) pre-irradiated LiGa 5O 8:Cr3+ phosphor is repeatedly stimulated with a visible light or a NIR light. The LiGa 5O8:Cr3+ phosphor has promising applications in optical information storage, night-vision surveillance, and in vivo bio-imaging.
| Original language | English |
|---|---|
| Article number | 1554 |
| Journal | Scientific Reports |
| Volume | 3 |
| DOIs | |
| State | Published - 2013 |
| Externally published | Yes |
Bibliographical note
Funding Information:Z.P. acknowledges financial support from the National Science Foundation (CAREER DMR-0955908), the American Chemical Society Petroleum Research Fund (PRF 50265-DN10), and the US Office of Naval Research (N00014-07-1-0060). J.X. acknowledges the support by an NCI/NIH R00 grant (5R00CA153772). We thank John D. Budai for reading the manuscript. We thank Rick Tarleton for allowing us to use the IVIS imaging system.
ASJC Scopus subject areas
- General