Structure and method of fabricating a trapping-mode
    8.
    发明授权
    Structure and method of fabricating a trapping-mode 失效
    捕获模式的制造方法和结构

    公开(公告)号:US5079610A

    公开(公告)日:1992-01-07

    申请号:US545108

    申请日:1990-06-27

    申请人: Paul R. Norton

    发明人: Paul R. Norton

    摘要: Photodetectors that produce detectivities close to the theoretical maximum detectivity include an electrically insulating substrate carrying a body of semiconductor material that includes a region of first conductivity type and a region of second conductivity type where the region of first conductivity type overlies and covers the junction with the region of second conductivity type and where the junction between the first and second regions separates minority carriers in the region of second conductivity type from majority carriers in the region of first conductivity type. These photodetectors produce high detectivities where radiation incident on the detectors has wavelengths in the range of about 1 to about 25 microns or more, particularly under low background conditions.

    摘要翻译: 产生接近理论最大检测率的检测率的光电检测器包括承载半导体材料体的电绝缘基板,其包括第一导电类型的区域和第二导电类型的区域,其中第一导电类型的区域覆盖并覆盖与 第二导电类型的区域,并且其中第一和第二区域之间的结点将第二导电类型区域中的少数载流子与第一导电类型区域中的多数载流子分开。 这些光电检测器产生高检测率,其中入射到检测器上的辐射波长在约1至约25微米或更大的范围内,特别是在低背景条件下。

    Method of growing crystalline layers by vapor phase epitaxy
    9.
    发明授权
    Method of growing crystalline layers by vapor phase epitaxy 失效
    通过气相外延生长结晶层的方法

    公开(公告)号:US4950621A

    公开(公告)日:1990-08-21

    申请号:US795447

    申请日:1985-11-06

    摘要: A method of growing an epitaxial crystalline layer on a substrate which comprises the steps of(a) providing in the reaction zone of a reaction vessel a heated substrate(b) establishing a gas stream, provided by a carrier gas which gas stream comprises at least 50% by volume of a gas which suppresses the homogeneous nucleation of particles in the vapor phase which contains, in the vapor phase, at least one alkyl of an element selected from Group 15 and Group 16 of the Periodic Table,(c) passing the gas stream through the reaction zone into contact with the heated substrate, and(d) irradiating at least a major part of the surface of the substrate with electromagnetic radiation to provide photolytic decomposition of the at least one alkyl and consequential epitaxial deposition of the layer containing the said element across at least a major part of the surface of the substrate.

    摘要翻译: 一种在衬底上生长外延晶体层的方法,其包括以下步骤:(a)在反应区的反应区中提供加热衬底(b),建立由载气提供的气流,该气流至少包括 50体积%的气体,其抑制在汽相中含有至少一种选自元素周期表第15族和第16族的元素的至少一种烷基的气相中颗粒的均匀成核,(c)使 通过反应区的气流与加热的基底接触,以及(d)用电磁辐射照射基底的表面的至少大部分,以提供含有至少一种烷基和伴随的外延沉积的层的光解分解 所述元件穿过衬底表面的至少大部分。

    HgCdTe epitaxially grown on crystalline support
    10.
    发明授权
    HgCdTe epitaxially grown on crystalline support 失效
    外延生长在结晶载体上的HgCdTe

    公开(公告)号:US4655848A

    公开(公告)日:1987-04-07

    申请号:US769816

    申请日:1985-08-26

    摘要: A layer of HgCdTe (15) epitaxially grown onto a crystalline support (10), e.g., of sapphire of GaAs. A CdTe substrate (5) is epitaxially grown to a thickness of between 1 micron and 5 microns on the support (10). A HgTe source (3) is spaced from the CdTe substrate (5) a distance of between 0.1 mm and 10 mm. The substrate (5) and source (3) are heated together in a thermally insulating, reusable ampoule (17) within a growth temperature range of between 500.degree. C. and 625.degree. C. for a growth step having a duration of between 5 minutes and 4 hours. Then an interdiffusion step is performed, in which the source (3) and substrate (5) are cooled within a temperature range of between 400.degree. C. and 500.degree. C. for a time of between 1 hour and 16 hours. In a first growth step embodiment, the source (3) and substrate (5) are isothermal. In a second growth step embodiment, the source (3) and substrate (5) are non-isothermal. Means are disclosed for preventing contamination of the reactants during HgTe (3) synthesis, and for polishing the HgCdTe layer (15).

    摘要翻译: 外延生长到例如GaAs的蓝宝石的结晶载体(10)上的HgCdTe(15)层。 在载体(10)上外延生长1微米至5微米厚度的CdTe衬底(5)。 HgTe源(3)与CdTe衬底(5)间隔0.1mm至10mm的距离。 在500℃至625℃的生长温度范围内,在绝热的可重复使用的安瓿(17)中将基底(5)和源(3)加热在一起,对于持续时间为5分钟的生长步骤 和4小时。 然后进行相互扩散步骤,其中将源(3)和基底(5)在400℃至500℃的温度范围内冷却1小时至16小时。 在第一生长步骤的实施例中,源(3)和衬底(5)是等温的。 在第二生长步骤的实施例中,源(3)和衬底(5)是非等温的。 公开了用于在HgTe(3)合成期间防止反应物污染并用于抛光HgCdTe层(15)的手段。