公开(公告)号：US20060208225A1

公开(公告)日：2006-09-21

申请号：US11368970

申请日：2006-03-06

申请人： Stephane Petoud ,  Demetra Chengelis ,  Adrienne Yingling

发明人： Stephane Petoud ,  Demetra Chengelis ,  Adrienne Yingling

IPC分类号： C09K11/08

CPC分类号： C09K11/883

摘要： The present invention relates to a new composition of luminescent matter in which lanthanide cations are incorporated into semiconductor nanocrystals, and methods for making this new composition of matter. The semiconductor nanocrystal structure serves as an antenna for allowing the excited electronic states of the semiconductor nanocrystals to sensitize lanthanide cation emission. In comparison to organic antenna types, semiconductor nanocrystals are able to protect lanthanide cations from quenching solvent molecules without supplying high energy vibrations, thereby resisting non-radiative deactivation of the lanthanide cation excited states. Semiconductor nanocrystals have several advantages as species that absorb and emit photons, namely, broad absorbance bands with high epsilon values and emission wavelengths that can be easily tuned through their size, which is controlled through synthesis conditions. Lanthanide cations also have several advantages—sharp emission bands and long luminescence lifetimes.

摘要翻译： 本发明涉及将镧系元素阳离子结合到半导体纳米晶体中的发光物质的新组合物，以及制备这种新的物质组成的方法。 半导体纳米晶体结构用作允许半导体纳米晶体的激发电子态使镧系元素阳离子发射敏化的天线。 与有机天线类型相比，半导体纳米晶体能够保护镧系元素阳离子免于猝灭溶剂分子而不提供高能量振动，从而抵抗镧系元素阳离子激发态的非辐射失活。 半导体纳米晶体作为吸收和发射光子的物质具有几个优点，即具有高ε值和发射波长的宽吸收带，其可以通过其通过合成条件控制的尺寸容易地调节。 镧系阳离子还具有几个优点 - 尖锐的发射带和长的发光寿命。