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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.125  No.11 (November) (2017)  >  pp.793-798

Journal of the Ceramic Society of Japan
<<Previous article Vol.125  No.11 (November) (2017)   pp.793 - 798 Next article>>

Red to near-infrared persistent luminescence in transition metal ion activated phosphors

Yumiko KATAYAMA1)
1) Graduate School of Arts and Sciences, The University of Tokyo

Red-to-near infrared persistent phosphors have attracted great attention because they are promising candidates for in vivo imaging. However, for most of the persistent phosphors that are activated only by ultraviolet (UV) light, the detection time is limited because persistent luminescence decays with time and UV excitation cannot be repeated due to the opacity of living tissues to UV radiation. Therefore, we have developed persistent phosphors with perovskite and garnet structures, which show 1) persistent luminescence at an optimum wavelength with high transparency for living tissue, 2) with brighter and longer persistent luminescence, and 3) with an additional function leading to long-term in vivo imaging capability.


Keyword:
Persistent luminescence, Transition metal oxide, Luminescence

Received: May 19, 2017
Accepted: August 21, 2017 , Published online: November 01, 2017

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