CdTe-based compound single crystal and method for producing the same

    公开(公告)号:US10557215B2

    公开(公告)日:2020-02-11

    申请号:US15859955

    申请日:2018-01-02

    摘要: Provided are a high resistance CdTe-based compound single crystal with miniaturized Te precipitates and a method for producing the same. According to one embodiment of the present invention, a CdTe based compound single crystal is provided including a precipitate having a particle size of less than 0.1 μm obtained from an analysis by a light scattering tomography method. In the CdTe based compound single crystal, resistivity may be 1×107 Ωcm or more. In addition, in the CdTe based compound single crystal, a precipitate having a particle size of 0.1 μm or more obtained from the analysis by the light scattering tomography method is not detected. In the CdTe based compound single crystal, the precipitate may be a Te precipitate.

    Direct assembly of hydrophobic nanoparticles to multifunction structures
    9.
    发明授权
    Direct assembly of hydrophobic nanoparticles to multifunction structures 有权
    将疏水性纳米粒子直接装配到多功能结构上

    公开(公告)号:US09393539B2

    公开(公告)日:2016-07-19

    申请号:US14130333

    申请日:2012-07-02

    申请人: Yadong Yin Zhenda Lu

    发明人: Yadong Yin Zhenda Lu

    摘要: A process that allows convenient production of multifunctional composite particles by direct self-assembly of hydrophobic nanoparticles on host nanostructures containing high density surface thiol groups is present. Hydrophobic nanoparticles of various compositions and combinations can be directly assembled onto the host surface through the strong coordination interactions between metal cations and thiol groups. The resulting structures can be further conveniently overcoated with a layer of normal silica to stabilize the assemblies and render them highly dispersible in water for biomedical applications. As the entire fabrication process does not involve complicated surface modification procedures, the hydrophobic ligands on the nanoparticles are not disturbed significantly so that they retain their original properties such as highly efficient luminescence. Multifunctional nonspherical nanostructures can be produced by using mercapto-silica coated nano-objects of arbitrary shapes as hosts for immobilizing functional nanoparticles. Multilayer structures can be achieved by repeating the mercapto-silica coating and nanoparticle immobilization processes.

    摘要翻译: 存在通过在包含高密度表面硫醇基团的主体纳米结构上直接自组装疏水性纳米粒子来方便地生产多功能复合颗粒的方法。 各种组合物和组合的疏水性纳米颗粒可以通过金属阳离子和硫醇基团之间的强配位相互作用直接组装到宿主表面上。 所得到的结构可以进一步方便地用一层普通二氧化硅涂覆,以稳定组件并使其高度分散在用于生物医学应用的水中。 由于整个制造过程不涉及复杂的表面改性方法,所以纳米颗粒上的疏水性配体不会受到明显的干扰,因此它们保留了它们的初始特性,如高效发光。 可以通过使用任意形状的巯基二氧化硅涂覆的纳米物体作为固定功能性纳米粒子的主体来制备多功能非球形纳米结构。 可以通过重复巯基二氧化硅涂层和纳米颗粒固定方法来实现多层结构。

    ENHANCED CONDUCTIVITY METAL-CHALCOGENIDE FILMS VIA POST ELECROPHORETIC DEPOSITION (EPD) TREATMENT
    10.
    发明申请
    ENHANCED CONDUCTIVITY METAL-CHALCOGENIDE FILMS VIA POST ELECROPHORETIC DEPOSITION (EPD) TREATMENT 审中-公开
    增强电导率金属 - 氯化铝膜通过后处理沉积(EPD)处理

    公开(公告)号:US20160097140A1

    公开(公告)日:2016-04-07

    申请号:US14872731

    申请日:2015-10-01

    摘要: A facile room-temperature method for assembling colloidal copper sulfide (Cu2-xS) nanoparticles into highly electrically conducting calcogenide material layer films utilizes ammonium sulfide for connecting the nanoparticles, while simultaneously effecting templating surfactant ligand removal. The foregoing process steps transform an as-deposited insulating films into a highly conducting films (i.e., having a conductivity at least about 75 S·cm−1). The methodology is anticipated as applicable to copper chalcogenides other than copper sulfide, as well as metal chalcogenides other than copper chalcogenides. The comparatively high conductivities reported are attributed to better interparticle coupling through the ammonium sulfide treatment. This approach presents a scalable room temperature route for fabricating comparatively highly conducting nanoparticle assemblies for large area electronic and optoelectronic applications.

    摘要翻译: 将胶体硫化铜(Cu2-xS)纳米粒子组装成高导电性的化学物质层膜的简便的室温方法利用硫化铵连接纳米粒子,同时进行模板表面活性剂配体去除。 上述工艺步骤将沉积的绝缘膜转变成高导电膜(即,具有至少约75S·cm-1的导电率)。 该方法预期适用于硫化铜以外的硫属硫族化物,以及除硫属硫族化物以外的金属硫族化物。 报告的较高电导率归因于通过硫化铵处理的更好的颗粒间偶联。 该方法提供了用于制造用于大面积电子和光电子应用的相对高导电性纳米颗粒组件的可扩展室温路线。