Journal
JOURNAL OF LUMINESCENCE
Volume 131, Issue 12, Pages 2784-2787Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2011.07.007
Keywords
beta-Ga2O3; Persistent luminescence from Cr3+; Near infrared (NIR); Nanowires
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Funding
- U.S. Office of Naval Research [N00014-07-1-0060]
- ACS [PRF 50265-DN10]
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Near-infrared (NIR) persistent luminescent beta-Ga2O3:Cr3+ nanowire assemblies were synthesized by a hydrothermal process followed by calcination. The phosphor exhibits more than 4 h afterglow in the wavelength range of 650-850 nm after ceasing the ultraviolet light (280-360 nm) irradiation. The trap structure and persistent luminescence mechanism were revealed by thermoluminescence measurement. The beta-Ga2O3:Cr3+ nanowire assemblies may find applications as identification taggants in security and optical probes in bio-imaging. (C) 2011 Elsevier B.V. All rights reserved.
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