Metalorganic vapor phase epitaxial growth of group II-VI semiconductor
materials
    11.
    发明授权
    Metalorganic vapor phase epitaxial growth of group II-VI semiconductor materials 失效
    II-VI族半导体材料的金属有机气相外延生长

    公开(公告)号:US4568397A

    公开(公告)日:1986-02-04

    申请号:US649650

    申请日:1984-09-12

    Abstract: A method for growing a Group II-VI epitaxial layer on a substrate, said epitaxial layer having an electron mobility greater than 1.5.times.10.sup.5 cm.sup.2 /V-sec at 77.degree. K. and a carrier concentration less than 4.times.10.sup.15 (cm.sup.-3) is described. The method includes the steps of directing a plurality of vapor flows towards the substrate including a Group II metalorganic vapor having a mole fraction in the range of 3.0.times.10.sup.-4 to 4.5.times.10.sup.-4, a Group VI metalorganic vapor having a mole fraction in the range of 2.9.times.10.sup.-3 to 3.5.times.10.sup.-3 and a Group II elemental metal vapor having a mole fraction in the range of 2.6.times.10.sup.-2 to 3.2.times.10.sup.-2. The source of Group II metal is heated to at least 240.degree. C. while radiant energy is directed toward the reactor vessel to warm the zone of the reactor vessel between the Group II metal source and the substrate to at least 240.degree. C. The directed flows of Group II metalorganic vapor, Group VI metalorganic vapor and Group II metal vapor then chemically react to form the epitaxial layer.

    Abstract translation: 一种用于在衬底上生长II-VI族外延层的方法,所述外延层在77°K具有大于1.5×10 5 cm 2 / V·sec的电子迁移率,并且载流子浓度小于4×10 15(cm -3)) 。 该方法包括以下步骤:将多个蒸气流引向基材,包括摩尔分数在3.0×10 -4至4.5×10 -4范围内的第II族金属有机蒸汽,第VI族金属有机蒸气的摩尔分数在 范围为2.9×10 -3至3.5×10 -3,以及摩尔分数在2.6×10 -2至3.2×10 -2范围内的II族元素金属蒸气。 将II族金属的来源加热至至少240℃,同时将辐射能量指向反应器容器以将第II族金属源和基底之间的反应器容器区域加热至至少240℃。定向 第II族金属有机蒸气,第VI族金属有机蒸气和第II族金属蒸气的流动然后化学反应形成外延层。

    Method for growing an epitaxial layer of CdTe on an epitaxial layer of
HgCdTe grown on a CdTe substrate
    12.
    发明授权
    Method for growing an epitaxial layer of CdTe on an epitaxial layer of HgCdTe grown on a CdTe substrate 失效
    在CdTe基板上生长的HgCdTe的外延层上生长CdTe外延层的方法

    公开(公告)号:US4376663A

    公开(公告)日:1983-03-15

    申请号:US328766

    申请日:1981-12-08

    Abstract: Disclosed is a method of growing a layer of CdTe on HgCdTe by liquid phase epitaxy. The solution for growth comprises Sn and Hg with a small amount of CdTe. A typical composition is Sn:Hg:CdTe=36:5:0.15 parts by weight. The growth temperature is a function of the amount of CdTe in solution. For the typical composition stated, the growth temperature is about 520.degree. C. The layers were grown on (111)A oriented CdTe substrates. The HgCdTe epilayer with a desired Cd composition is first grown, and an epilayer of CdTe is subsequently grown on the HgCdTe epilayer. The cross-diffusion at the CdTe/Hg.sub.1-x Cd.sub.x Te interface has been as small as 0.3 .mu.m for the thin CdTe epilayer. The first CdTe/HgCdTe heterojunction sensitive to .about.2.8 .mu.m at 77K has been demonstrated.

    Abstract translation: 公开了通过液相外延在HgCdTe上生长CdTe层的方法。 用于生长的溶液包括具有少量CdTe的Sn和Hg。 典型的组成是Sn:Hg:CdTe = 36:5:0.15重量份。 生长温度是溶液中CdTe量的函数。 对于所述的典型组成,生长温度为约520℃。将层在(111)A取向的CdTe底物上生长。 首先生长具有所需Cd组成的HgCdTe外延层,随后在HgCdTe外延层上生长CdTe的外延层。 CdTe / Hg1-xCdxTe界面的交叉扩散对于薄的CdTe外延层来说已经小到0.3μm。 已经证明了在77K下对于差异2.8μm敏感的第一CdTe / HgCdTe异质结。

    CdTe semiconductor substrate for epitaxial growth and substrate container
    16.
    发明授权
    CdTe semiconductor substrate for epitaxial growth and substrate container 有权
    用于外延生长的CdTe半导体衬底和衬底容器

    公开(公告)号:US08513775B2

    公开(公告)日:2013-08-20

    申请号:US13131614

    申请日:2010-09-30

    Abstract: Provided is a CdTe-based semiconductor substrate for epitaxial growth, which is capable of growing good-quality epitaxial crystals without urging a substrate user to implement etching treatment before the epitaxial growth.A CdTe-based semiconductor substrate, in which tracks of linear polishing damage with a depth of 1 nm or more are not observed within a viewing range of 10 μm×10 μm when a surface of the substrate is observed by an atomic force microscope, and orange peel defects are not observed when the surface of the substrate is visually observed under a fluorescent lamp, can grow the good-quality epitaxial crystals.

    Abstract translation: 提供了一种用于外延生长的CdTe基半导体衬底,其能够在不促使衬底用户在外延生长之前实施蚀刻处理的同时生长良好质量的外延晶体。 当通过原子力显微镜观察基板的表面时,在10mum×10um的观察范围内未观察到具有1nm以上的深度的线性抛光损伤的轨迹的CdTe系半导体基板, 在荧光灯下目视观察基板的表面时,不会观察到橙皮缺陷,可以生长优质的外延晶体。

    CDTE SEMICONDUCTOR SUBSTRATE FOR EPITAXIAL GROWTH AND SUBSTRATE CONTAINER
    18.
    发明申请
    CDTE SEMICONDUCTOR SUBSTRATE FOR EPITAXIAL GROWTH AND SUBSTRATE CONTAINER 有权
    用于外延生长和底物容器的CDTE半导体衬底

    公开(公告)号:US20110233729A1

    公开(公告)日:2011-09-29

    申请号:US13131614

    申请日:2010-09-30

    Abstract: Provided is a CdTe-based semiconductor substrate for epitaxial growth, which is capable of growing good-quality epitaxial crystals without urging a substrate user to implement etching treatment before the epitaxial growth.A CdTe-based semiconductor substrate, in which tracks of linear polishing damage with a depth of 1 nm or more are not observed within a viewing range of 10 μm×10 μm when a surface of the substrate is observed by an atomic force microscope, and orange peel defects are not observed when the surface of the substrate is visually observed under a fluorescent lamp, can grow the good-quality epitaxial crystals.

    Abstract translation: 提供了一种用于外延生长的CdTe基半导体衬底,其能够在不促使衬底用户在外延生长之前实施蚀刻处理的同时生长良好质量的外延晶体。 当通过原子力显微镜观察基板的表面时,在10μm×10μm的观察范围内未观察到具有1nm以上的深度的线性抛光损伤的轨迹的CdTe系半导体基板, 在荧光灯下目视观察基板的表面时,不会观察到橙皮缺陷,可以生长优质的外延晶体。

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