荧光粉
发光
持续发光
红外线的
材料科学
激发态
激发
光电子学
离子
近红外光谱
分析化学(期刊)
物理
原子物理学
光学
化学
热释光
量子力学
色谱法
作者
Feng Liu,Yan Liang,Zhengwei Pan
标识
DOI:10.1103/physrevlett.113.177401
摘要
Up-conversion luminescence and long-persistent luminescence are two well-studied, special luminescence processes. By combining the unique features of these two luminescence processes, here we design a new luminescence process called up-converted persistent luminescence (UCPL), which enables us to generate persistent luminescence having an emission energy higher than the excitation energy. Guided by the UCPL concept, we create the first UCPL phosphor Zn3Ga2GeO8:1%Cr3+, 5%Yb3+, 0.5%Er3+ by incorporating an up-converting ion pair Yb3+/Er3+ into a Zn3Ga2GeO8:1%Cr3+ near-infrared persistent phosphor. After being excited by a 980 nm laser, the phosphor emits long-lasting (>24 h) near-infrared persistent emission peaking at 700 nm. The UCPL concept and the associated phosphors are expected to have important implications for several fields such as biomedical imaging.Received 9 May 2014DOI:https://doi.org/10.1103/PhysRevLett.113.177401© 2014 American Physical Society
科研通智能强力驱动
Strongly Powered by AbleSci AI