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    • 71. 发明授权
    • Metalorganic vapor phase epitaxial growth of group II-VI semiconductor
materials
    • II-VI族半导体材料的金属有机气相外延生长
    • US4568397A
    • 1986-02-04
    • US649650
    • 1984-09-12
    • William E. HokeRichard TraczewskiPeter J. Lemonias
    • William E. HokeRichard TraczewskiPeter J. Lemonias
    • C30B25/02H01L21/365H01L31/00
    • H01L21/02395C30B25/02C30B29/48H01L21/02398H01L21/02411H01L21/0248H01L21/02562H01L21/0262Y10S148/063Y10S148/064Y10S148/08Y10S148/11
    • 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.
    • 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。
    • 73. 发明授权
    • Method of making tunable semiconductor laser
    • 制造可调谐半导体激光器的方法
    • US5284791A
    • 1994-02-08
    • US926240
    • 1992-08-06
    • Yasutaka SakataMasayuki YamaguchiTatsuya Sasaki
    • Yasutaka SakataMasayuki YamaguchiTatsuya Sasaki
    • H01S5/00H01S5/042H01S5/062H01S5/10H01S5/227H01L21/20
    • H01L33/0062H01S5/06206H01S5/227H01S5/2272Y10S148/095Y10S148/11
    • In a method of making a tunable twin guide (TTG) type tunable semiconductor laser, over the surface of a semiconductor substrate of one conductivity type, an active layer, a central layer of the opposite conductivity type, and a tuning layer, each being stripe-shaped and overlying the top of the preceding one is provided. This method is characterized in that the processing of semiconductor elements for defining the current path/optical waveguide inside the laser is carried out not by etching but by using selective epitaxy method such as metal organic vapor phase epitaxy (MOVPE). The use of selective MOVPE permits to form stripe-shaped layers at high precision and good uniformity, with consequent effects of minimizing scattering of laser light, increasing the efficiency of the drive power to laser light output conversion and enhancing the coupling efficiency with optical fibers. Besides thinner central layer that can be formed can contributes to enlarging the tunable bandwidth of laser light.
    • 在制造可调双引导(TTG)型可调谐半导体激光器的方法中,在一种导电类型的半导体衬底的表面上,有源层,相反导电类型的中心层和调谐层 并提供了上述的顶部。 该方法的特征在于,用于限定激光器内的电流路径/光波导的半导体元件的处理不是通过蚀刻而是通过使用诸如金属有机气相外延(MOVPE)的选择性外延法来进行的。 选择性MOVPE的使用允许以高精度和良好的均匀性形成条状层,从而使激光的散射最小化,提高激光功率对激光输出转换的效率以及增强与光纤的耦合效率的效果。 除了可以形成的更薄的中心层可以有助于扩大激光的可调带宽。