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    QUANTUM DOTS HAVING COMPOSITION GRADIENT SHELL STRUCTURE AND MANUFACTURING METHOD THEREOF
    4.
    发明申请
    QUANTUM DOTS HAVING COMPOSITION GRADIENT SHELL STRUCTURE AND MANUFACTURING METHOD THEREOF 审中-公开
    具有组成梯度结构及其制造方法的量子点

    公开(公告)号：US20100140586A1

    公开(公告)日：2010-06-10

    申请号：US12442943

    申请日：2007-09-21

    申请人： Kookheon Char ,  Seonghoon Lee ,  Wan Ki Bae ,  Hyuck Hur

    发明人： Kookheon Char ,  Seonghoon Lee ,  Wan Ki Bae ,  Hyuck Hur

    IPC分类号： H01L29/12 ,  H01L21/36 ,  H01L21/06

    CPC分类号： H01L29/127 ,  B82Y10/00 ,  B82Y30/00 ,  C01B19/002 ,  C01B19/007 ,  C01G9/08 ,  C01G11/00 ,  C01G11/02 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/84 ,  C01P2006/40 ,  C09K11/02 ,  C09K11/565 ,  C09K11/883 ,  H01L21/02474 ,  H01L21/02477 ,  H01L21/0248 ,  H01L21/02557 ,  H01L21/0256 ,  H01L21/02562 ,  H01L21/02601 ,  H01L29/22 ,  Y10S438/962 ,  Y10S977/774

    摘要： Provided are quantum dots having a gradual composition gradient shell structure which have an improvedluminous efficiency and optical stability, and a method of manufacturing the quantum dots in a short amount of time at low cost. In the method, the quantum dots can be manufactured in a short amount of time at low cost using a reactivity difference between semiconductor precursors, unlike in uneconomical and inefficient conventional methods where shells areformed after forming cores and performing cleaning and redispersion processes. Also, formation of the cores is followed by formation of shells having a composition gradient. Thus, even if the shells are formed to a large thickness, the lattice mismatch between cores and shells is relieved. Furthermore, on the basis of the funneling concept, electrons and holes generated in the shells are transferred to the cores to emit light, thereby obtaining a high luminous efficiency of 80% or more. The quantum dot structure is not limited to Group II-IV semiconductor quantum dots but can be applied to other semiconductors quantum dots, such as Group III-V semiconductors quantum dots and Group IV-IV semiconductors quantum dots. Also, the manufacturing method can be utilized in the development of semiconductor quantum dots having different physical properties, and in various other fields.

    摘要翻译： 提供了具有提高的发光效率和光学稳定性的逐渐组成梯度壳结构的量子点以及以低成本在短时间内制造量子点的方法。 在该方法中，可以使用半导体前体之间的反应性差异以低成本在短时间内制造量子点，这不同于在形成核心并执行清洁和再分散工艺之后形成壳体的不经济和低效的常规方法。 此外，芯的形成之后是形成具有组成梯度的壳。 因此，即使壳体形成较大的厚度，也可以减轻芯部和壳体之间的晶格失配。 此外，在漏斗观念的基础上，将壳中产生的电子和空穴转移到核发光，从​​而获得80％以上的高发光效率。 量子点结构不限于II-IV族半导体量子点，而是可以应用于其他半导体量子点，例如III-V族半导体量子点和IV-IV族半导体量子点。 此外，制造方法可以用于开发具有不同物理性质的半导体量子点以及各种其它领域。