公开(公告)号：US20090121189A1

公开(公告)日：2009-05-14

申请号：US12246163

申请日：2008-10-06

申请人： Yiguang Ju ,  Jingning Shan

发明人： Yiguang Ju ,  Jingning Shan

IPC分类号： C09K11/77 ,  C09K11/00

CPC分类号： C09K11/7773

摘要： Methods for preparing rare earth doped monodisperse, hexagonal phase upconverting nanophosphors, the steps of which include: dissolving one or more rare earth precursor compounds and one or more host metal fluoride compounds in a solvent containing a tri-substituted phosphine or a tri-substituted phosphine oxide to form a solution; heating the solution to a temperature above about 250° C. at which the phosphine or phosphine oxide remains liquid and does not decompose; and precipitating and isolating from the solution phosphorescent hexagonal phase monodisperse nanoparticles of the host metal compound doped with rare earth elements. Nanoparticles according to the present invention, and methods for coating the nanoparticles with SiO2 are also disclosed.

摘要翻译： 稀土掺杂单分散六方相上转换纳米荧光粉的制备方法，其步骤包括：将一种或多种稀土前体化合物和一种或多种主体金属氟化物溶解在含有三取代膦或三取代膦的溶剂中 氧化物形成溶液; 将溶液加热到高于约250℃的温度，其中磷化氢或氧化膦保持液体并且不分解; 并从掺杂有稀土元素的主体金属化合物的溶液磷光六方相单分散纳米颗粒中沉淀和分离。 还公开了根据本发明的纳米颗粒以及用SiO 2涂覆纳米颗粒的方法。

公开(公告)号：US20100124658A1

公开(公告)日：2010-05-20

申请号：US11537159

申请日：2006-09-29

申请人： Yiguang Ju ,  Takeshi Yokomori ,  Xiao Qin

发明人： Yiguang Ju ,  Takeshi Yokomori ,  Xiao Qin

IPC分类号： C09K11/77

CPC分类号： C09K11/7787 ,  B82Y30/00 ,  C01B13/34 ,  C01F17/0018 ,  C01F17/0043 ,  C01P2002/52 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/84 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/52 ,  C01P2004/64 ,  Y10T428/2982

摘要： A method for producing activated substantially monodisperse, phosphorescent oxide particles with rare earth element dopants uniformly dispersed therein by mixing a rare earth element dopant precursor powder with an oxide-forming host metal powder to form a solid-phase precursor composition; vaporizing the solid-phase precursor composition; combining the vaporized precursor with an inert carrier gas; contacting the inert carrier gas and the vaporized precursor with a flame fueled by a reactive gas; and uniformly heating the vaporized precursor in the flame to a reaction temperature sufficient to form activated phosphorescent oxide nanoparticles.

摘要翻译： 通过将稀土元素掺杂剂前体粉末与形成氧化物的主体金属粉末混合以形成固相前体组合物，制备均匀分散有稀土元素掺杂剂的活化的基本单分散磷光氧化物颗粒的方法; 汽相固相前体组合物; 将蒸发的前体与惰性载气组合; 使惰性载体气体和汽化的前体与被反应气体燃烧的火焰接触; 并将火焰中蒸发的前体均匀加热到足以形成活化的磷光氧化物纳米颗粒的反应温度。

公开(公告)号：US20070069180A1

公开(公告)日：2007-03-29

申请号：US11537035

申请日：2006-09-29

申请人： Yiguang Ju ,  Xiao Qin

发明人： Yiguang Ju ,  Xiao Qin

IPC分类号： C09K11/08

CPC分类号： C09K11/7787 ,  B82Y30/00 ,  C01B13/34 ,  C01F17/0018 ,  C01F17/0043 ,  C01P2002/52 ,  C01P2002/60 ,  C01P2002/72 ,  C01P2002/84 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/52 ,  C01P2004/64 ,  Y10T428/2982

摘要： A process is provided for producing substantially monodisperse phosphorescent oxide nanoparticles with rare earth element dopants uniformly dispersed therein, in-which a soluble salt of one or more oxide-forming host metals and a soluble salt of one or more rare earth elements are dissolved in a polar solvent in which the rare earth element salts are soluble to form a precursor solution; droplets of the solution having a particle size less than about 20 microns are suspended in an inert carrier gas; the carrier gas with droplets suspended therein is contacted with a flame fueled by a reactive gas; and the suspended droplets are uniformly heated in the flame to a reaction temperature sufficient to form active radicals that accelerate the formation of activated phosphorescent oxide nanoparticles with uniform rare earth ion distribution. Rare earth doped monodisperse activated cubic phase phosphorescent oxide nano-particles are also disclosed.

摘要翻译： 提供了一种制备基本上单分散磷光氧化物纳米颗粒的方法，其中稀土元素掺杂剂均匀分散在其中，其中一种或多种形成氧化物的主体金属的可溶性盐和一种或多种稀土元素的可溶性盐溶解在 极性溶剂，其中稀土元素盐可溶于其形成前体溶液; 具有小于约20微米的粒度的溶液的液滴悬浮在惰性载气中; 悬浮在其中的液滴的载气与由反应气体燃烧的火焰接触; 并将悬浮的液滴在火焰中均匀加热到足以形成活性自由基的反应温度，其加速具有均匀稀土离子分布的活化的磷光氧化物纳米颗粒的形成。 还公开了稀土掺杂的单分散活化立方相磷光氧化物纳米颗粒。