NIR Persistent Luminescence of Lanthanide Ion-Doped Rare-Earth Oxycarbonates: The Effect of Dopants

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• 作者：Valentina Caratto ; Federico Locardi ; Giorgio Andrea Costa ; Roberto Masini ; Mauro Fasoli ; Laura Panzeri ; Marco Martini ; Emanuela Bottinelli ; Enrica Gianotti ; Ivana Miletto
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2014
• 出版时间：October 22, 2014
• 年：2014
• 卷：6
• 期：20
• 页码：17346-17351
• 全文大小：321K
• ISSN：1944-8252

文摘

A series of luminescent rare-earth ion-doped hexagonal II-type Gd oxycarbonate phosphors Gd_2鈥?i>xRE_xO₂CO₃ (RE = Eu³⁺, Yb³⁺, Dy³⁺) have been successfully synthesized by thermal decomposition of the corresponding mixed oxalates. The Yb³⁺ doped Gd-oxycarbonate has evidenced a high persistent luminescence in the NIR region, that is independent from the temperature and makes this materials particular attractive as optical probes for bioimaging.

Keywords:

NIR luminescence; persistent luminescence; rare-earth ions luminescence; oxycarbonates; athermal tunneling luminescence