TY - GEN
T1 - Persistent luminescence in ZnGa2O4:Cr3+ transparent glass-ceramics
AU - Castaing, V.
AU - Pellerin, M.
AU - Sontakke, A. D.
AU - Fernández Carriónc, A. J.
AU - Chaneac, C.
AU - Allix, M.
AU - Gourier, D.
AU - Viana, B.
N1 - Publisher Copyright:
© 2017 SPIE.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Given the increasing demand for optical in vivo bioimaging materials, persistent luminescence in the red/near infrared range is receiving particular attention. Within this work, several elaboration ways of ZnGa2O4:Cr3+, respectively by solid state, by microwave assisted hydrothermal synthesis and by glass crystallization have been carried out. Structural analysis shows that all methods lead to pure spinel structure. Powder micrometric material is obtained by solid state reaction while nanoparticles are obtained by the two other methods. In the case of the glass-ceramics process, the nanocrystals obtained are trapped in a glassy matrix. This kind of elaboration leads to nanoparticles with lower amount of defects, no surface contact with air and an increase signal of the persistent luminescence compared to disperse nanoparticles. These good persistent luminescence properties are well correlated to thermoluminescence glow curves analysis. Moreover, such glass ceramics can be used as a good tool to study more deeply the persistent luminescence process of nanoparticles in a transparent environment and samples are easier to characterize.
AB - Given the increasing demand for optical in vivo bioimaging materials, persistent luminescence in the red/near infrared range is receiving particular attention. Within this work, several elaboration ways of ZnGa2O4:Cr3+, respectively by solid state, by microwave assisted hydrothermal synthesis and by glass crystallization have been carried out. Structural analysis shows that all methods lead to pure spinel structure. Powder micrometric material is obtained by solid state reaction while nanoparticles are obtained by the two other methods. In the case of the glass-ceramics process, the nanocrystals obtained are trapped in a glassy matrix. This kind of elaboration leads to nanoparticles with lower amount of defects, no surface contact with air and an increase signal of the persistent luminescence compared to disperse nanoparticles. These good persistent luminescence properties are well correlated to thermoluminescence glow curves analysis. Moreover, such glass ceramics can be used as a good tool to study more deeply the persistent luminescence process of nanoparticles in a transparent environment and samples are easier to characterize.
KW - Cr
KW - Persistent luminescence
KW - Thermoluminescence glow curves
KW - Transparent glass-ceramics
KW - ZnGaO
UR - https://www.scopus.com/pages/publications/85019542212
U2 - 10.1117/12.2253854
DO - 10.1117/12.2253854
M3 - Conference contribution
AN - SCOPUS:85019542212
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Oxide-Based Materials and Devices VIII 2017
A2 - Teherani, Ferechteh H.
A2 - Look, David C.
A2 - Rogers, David J.
A2 - Bozovic, Ivan
PB - SPIE
T2 - Oxide-Based Materials and Devices VIII 2017
Y2 - 29 January 2017 through 1 February 2017
ER -