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    • 3. 发明授权
    • Method of filling a recess flat with a material by a bias ECR-CVD process
    • 通过偏压ECR-CVD工艺用材料填充凹陷的方法
    • US5182221A
    • 1993-01-26
    • US714235
    • 1991-06-12
    • Junichi Sato
    • Junichi Sato
    • H01L21/76H01L21/31H01L21/316H01L21/762
    • H01L21/02164H01L21/022H01L21/02208H01L21/02211H01L21/02274H01L21/31608H01L21/76229Y10S148/025Y10S148/026Y10S148/043Y10S148/118Y10S148/169
    • A method of filling a recess so that it is flat with a material by a bias ECR-CVD process is capable of depositing the recess with the material without resulting in the increase in the aspect ratio of the recess with the progress of the deposition process and without forming any voids in the material filling up the recess. A method in accordance with the present invention is characterized in that the bias ECR-CVD process is controlled so as to meet a condition expressed by: R=2y/x, where R is the deposition rate ratio, namely, the ratio of a vertical deposition rate at which the material is deposited on the vertical side surface of the recess to a deposition rate at which the material deposited on the horizontal bottom surface of the recess, x is the width of the recess and y is the depth of the recess. In another method of filling a recess flat with a material by a bias ECR-CVD process in accordance with the present invention alternately a deposition cycle using a source gas containing a silicon-containing gas and a deposition cycle using a source gas containing a silicon hydride to obviate the adverse influence of a layer of the material formed by the deposition process using the source gas containing a silicon-containing organic gas and containing carbon on the performance of the device are used.
    • 通过偏压ECR-CVD工艺填充凹陷以使其与材料平坦的方法能够与材料沉积凹槽,而不会随着沉积过程的进行而增加凹部的纵横比, 而不会在填充凹槽的材料中形成任何空隙。 根据本发明的方法的特征在于,控制偏压ECR-CVD工艺以满足以下表达的条件:R = 2y / x,其中R是沉积速率比,即垂直 将材料沉积在凹槽的垂直侧表面上的沉积速率到沉积在凹槽的水平底表面上的材料的沉积速率,x是凹部的宽度,y是凹部的深度。 在根据本发明的通过偏压ECR-CVD工艺填充具有材料的凹部的另一种方法中,交替地使用包含含硅气体的源气体和使用含有氢化硅的源气体的沉积循环的沉积循环 为了消除使用包含含硅有机气体并含有碳的源气体的沉积工艺形成的材料层对器件的性能的不利影响。
    • 6. 发明授权
    • Method for growing tilted superlattices
    • 生长倾斜超晶格的方法
    • US5013683A
    • 1991-05-07
    • US300266
    • 1989-01-23
    • Pierre M. PetroffHerbert Kroemer
    • Pierre M. PetroffHerbert Kroemer
    • H01L21/20H01L21/203H01L21/337H01L29/15
    • B82Y10/00H01L21/02395H01L21/02433H01L21/02463H01L21/0262H01L21/02631H01L21/02658H01L29/151H01L29/158H01L29/66924Y10S117/902Y10S148/025Y10S148/097Y10S148/16Y10S148/169Y10S438/962
    • A method for growing a superlattice structure on a substrate. First, a periodic array of monoatomic surface steps are created on the surface of the substrate at an area to have the superlattice structure grown thereon. There is apparatus for creating a beam of a material being input thereto and for selectively including or not including respective ones of a plurality of materials within the beam. The beam is directed at the steps of the substrate. Finally, logic causes control apparatus to include and not include respective ones of the materials within the beam in a pre-established pattern of time periods which will cause the materials to be deposited on the steps in a series of stacked monolayers. Tilted Superlattices (TSLs) and Coherent Tilted Superlattices (CTSLs) are created. The method can create pseudo ternary semiconductor alloys as part of a CTSL by employing at least two binary compound semiconductor alloys in the deposition process. It can also create a quantum wire superlattice by sandwiching a thin CTSL layer between two wider band gap layers. Additionally, it can create a tilted superlattice with zero misfit strain by using three binary compounds to produce a pseudo-ternary compound in a direction parallel to the substrate normal while the tilted superlattice structure provides a desired band gap in a direction parallel to the substrate surface. One may form the CTSL as part of a field effect transistor (FET) wherein the CTSL is part of the FET gate or form the CTSL as the cladding layers of a quantum wire laser having a GaAs active layer.
    • 一种在衬底上生长超晶格结构的方法。 首先,在衬底的表面上在其上生长超晶格结构的区域上产生单原子表面台阶的周期性阵列。 存在用于产生输入到其中的材料束的设备,并且用于选择性地包括或不包括在梁内的多个材料中的相应材料。 光束指向基板的台阶。 最后,逻辑使得控制装置包括并且不包括预先建立的时间段模式中的束内的材料中的相应材料,这将使材料沉积在一系列堆叠单层中的台阶上。 创建了倾斜超晶格(TSL)和相干倾斜超晶格(CTSL)。 该方法可以通过在沉积工艺中采用至少两种二元化合物半导体合金来制造伪三元半导体合金作为CTSL的一部分。 它还可以通过在两个较宽的带隙层之间夹入薄的CTSL层来产生量子线超晶格。 另外,它可以通过使用三种二元化合物在平行于衬底法线的方向上产生伪三元化合物而产生具有零失配应变的倾斜超晶格,同时倾斜超晶格结构在平行于衬底表面的方向上提供期望的带隙 。 可以将CTSL形成为场效应晶体管(FET)的一部分,其中CTSL是FET栅极的一部分或形成CTSL作为具有GaAs活性层的量子线激光器的包层。