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    • 1. 发明授权
    • Method for two-dimensional epitaxial growth of III-V compound
semiconductors
    • III-V化合物半导体的二维外延生长方法
    • US5456206A
    • 1995-10-10
    • US350451
    • 1994-12-07
    • Bun LeeMee-Young YoonJong-Hyeob Baek
    • Bun LeeMee-Young YoonJong-Hyeob Baek
    • H01L21/20
    • H01L21/02502H01L21/02395H01L21/02463H01L21/02546H01L21/0262
    • A method for growing a thin InGaAs or InAlAs layer with heavy lattice mismatching on a GaAs substrate by a MOCVD process is described. A first material gas is injected by a MOCVD process to grow a buffer layer on a GaAs substrate to a prescribed thickness. After stopping the injection of the first material gas for a few seconds, a second material gas containing a column III element is injected at a prescribed temperature. A third material gas containing a column V element is injected to grow, on the buffer layer, a thin metallic layer of a binary compound containing the column III element of a high concentration to a thickness of 2 nm or less. After a prescribed time from the injection of the third material gas, In and Ga gases or In and Al gases, mixed in the prescribed proportion are injected in an atmosphere of said third material gas to grow a thin InGaAs or InAlAs layer on the thin metallic layer.
    • 描述了通过MOCVD工艺在GaAs衬底上生长具有重晶格失配的薄InGaAs或InAlAs层的方法。 通过MOCVD法注入第一材料气体,以在GaAs衬底上生长规定厚度的缓冲层。 在停止喷射第一原料气体几秒钟后,在规定温度下注入含有III族元素的第二原料气体。 注入含有V族元素的第三材料气体,在缓冲层上生长含有高浓度的III族元素的二元化合物的薄金属层,厚度为2nm以下。 在注入第三原料气体的规定时间后,在所述第三原料气体的气氛中注入以规定比例混合的In和Ga气体或In和Al气体,以在薄金属上生长薄的InGaAs或InAlAs层 层。
    • 3. 发明授权
    • Method for growing epitaxial layers of III-V compound semiconductors
    • 生长III-V族化合物半导体外延层的方法
    • US5900056A
    • 1999-05-04
    • US769242
    • 1996-12-18
    • Sung-Woo ChoiJong-Hyeob BaekBun Lee
    • Sung-Woo ChoiJong-Hyeob BaekBun Lee
    • H01L21/20C30B25/10C30B25/14
    • C30B25/105C30B29/40
    • The present invention relates to a method for growing new binary, ternary and quaternary epitaxial layers of III-V compound semiconductors which have the characteristics of low temperature growth, good stability and high-purity, using remote plasma, comprising the steps of converting H.sub.2 and He mixed gas into a plasma state; heating a high-purity of solid source to generate a vaporized source; reacting the vaporized source with H.sub.2 under the H.sub.2 and He plasma environment to produce V-hydrides in situ; introducing the V-hydrides directly into group III source without passing through the plasma; and reacting V-hydrides with group III source on a substrate to form an epitaxial thin layer of III-V compound semiconductors. According to the present invention, high-purity of epitaxial thin layer can be formed at a low temperature, an economical process that does not require an ultrahigh vacuum, a stabilized process that does not need to handle poisonous gas for the reaction with gropu V, and a simple process for manufacturing the various binary, ternary and quaternary compound semiconductor alloys can be provided. Thus, the method of the present invention can be applied to the future information and communication industry, for example, high speed, high frequency optical communication system with (Ga, In, Al)--(As, P, Sb) based on III-V compound semiconductor electronic and optical devices, and the circuitry thereof including heterojunction bipolar transistors, high electron mobility transistors, semiconductor lasers and optical switches.
    • 本发明涉及一种利用远程等离子体生长具有低温生长特性,稳定性好,高纯度等特点的III-V族化合物半导体二元,三元和四元外延层的方法,包括以下步骤:将H 2和 他将气体混合成等离子体状态; 加热高纯度固体源以产生蒸发源; 在H 2和He等离子体环境下使蒸发源与H 2反应,原位产生V-氢化物; 将V型氢化物直接引入III族源而不通过等离子体; 并将V型氢化物与III族源反应在衬底上以形成III-V族化合物半导体的外延薄层。 根据本发明,可以在低温下形成高纯度的外延薄层,不需要超高真空的经济工艺,不需要处理有毒气体用于与gropu V反应的稳定过程, 并且可以提供制造各种二元,三元和四元化合物半导体合金的简单方法。 因此,本发明的方法可以应用于将来信息通信行业,例如具有(Ga,In,Al) - (As,P,Sb)的高速,高频光通信系统, V化合物半导体电子和光学器件,其电路包括异质结双极晶体管,高电子迁移率晶体管,半导体激光器和光开关。
    • 4. 发明授权
    • Method for fabricating grating coupler
    • 光栅耦合器的制作方法
    • US5855669A
    • 1999-01-05
    • US842872
    • 1997-04-17
    • Jong-Hyeob BaekBun Lee
    • Jong-Hyeob BaekBun Lee
    • G02B6/293C30B25/02G02B5/18G02B6/122G02B6/124G02B6/34H01L21/203C30B25/16
    • C30B25/02C30B29/40G02B6/124G02B6/34
    • A grating coupler is formed by growing an optical waveguide layer on a substrate by an epitaxial growing process such as a metalorganic chemical vapor deposition and a molecular beam deposition. The optical waveguide layer has a surface on which a cross-hatch pattern serving as the grating is continuously formed. The optical waveguide layer is formed with a material having a reflective index greater than a reflective index of the substrate or an atmosphere. Specifically, the substrate is formed with GaAs and the optical waveguide layer is formed with InGaAs. Further, the substrate is an on-substrate having an orientation coinciding with a �100! plane, so as to form the optical waveguide layer having continuous cross-hatch patterns on the surface thereof. The spacing between the cross-hatch patterns can be varied according to variation of a growth temperature of the optical waveguide layer.
    • 通过外延生长工艺如金属有机化学气相沉积和分子束沉积在衬底上生长光波导层来形成光栅耦合器。 光波导层具有连续形成用作光栅的交叉影线图案的表面。 光波导层由具有大于基板的反射率或大气的反射率的材料形成。 具体地,基板由GaAs形成,并且光波导层由InGaAs形成。 此外,基板是具有与[100]面重合的取向的基板,从而在其表面上形成具有连续交叉图案的光波导层。 交叉线图案之间的间隔可以根据光波导层的生长温度的变化而变化。
    • 7. 发明授权
    • Apparatus for monitoring films during MOCVD
    • 用于在MOCVD期间监测膜的装置
    • US5472505A
    • 1995-12-05
    • US359198
    • 1994-12-19
    • Bun LeeDug-Bong KimJong-Hyeob Baek
    • Bun LeeDug-Bong KimJong-Hyeob Baek
    • C23C16/52C30B25/02C23C14/00
    • C30B25/02C23C16/52Y10T117/10Y10T117/1004
    • An apparatus for monitoring a film growth is disclosed, in which, when a crystalline thin film is grown by applying an MOCVD (metalorganic chemical vapor deposition method), the variation of the thickness and composition due to certain factors can be detected with real time during the film growing process, and an in-situ adjustment is possible. As the optical detector for detecting two sets of reflected beams which are reflected from the film, a silicon detector and a germanium detector are used, the former being suitable for detecting short wavelength laser beams, and the latter being suitable for detecting long wavelength laser beams. Thus two different wavelengths are detected with real time, thereby measuring the thickness and composition of the film.
    • 公开了一种用于监测膜生长的装置,其中当通过施加MOCVD(金属有机化学气相沉积法)生长结晶薄膜时,可以实时检测由于某些因素导致的厚度和组成的变化 成膜过程和原位调整是可能的。 作为用于检测从膜反射的两组反射光束的光检测器,使用硅检测器和锗检测器,前者适用于检测短波长激光束,后者适用于检测长波长激光束 。 因此,实时检测两个不同的波长,从而测量膜的厚度和组成。
    • 8. 发明授权
    • Surface-emitting laser device
    • 表面发射激光器件
    • US5883911A
    • 1999-03-16
    • US742160
    • 1996-11-01
    • Bun LeeJong-Hyeob BaekSung-Woo ChoiJin-Hong Lee
    • Bun LeeJong-Hyeob BaekSung-Woo ChoiJin-Hong Lee
    • H01S3/00H01S5/183H01S5/32H01S5/34H01S5/343H01S3/19
    • B82Y20/00H01S5/183H01S2301/173H01S5/1053H01S5/18319H01S5/3205H01S5/3215H01S5/3406H01S5/34313
    • An improved surface-emitting laser device by which the light emitting wave length can be easily varied since the electric potential grown using the thin film material having a desired lattice rate uses a very small portion of activation layers, and by which the continuous oscillation is made at room temperature by using the reflector having high reflective index. Thus, optical characteristics are increased, which includes a GaAs substrate; a lower reflector is formed of multiple layers of AlAs/GaAs heterogenous thin films having a reflective index of 1 on the GaAs substrate; a tooth-shaped grading layer is formed of a lower reflector on the lower reflector and an In.sub.x Ga.sub.1-x As thin film having a large lattice rate in a compositional grading method; a tooth-shaped InGaAs grading well is formed on the In.sub.x Ga.sub.1-x As grading layer as an In composition of which reduced rather than the grading layer; a buffer layer is formed on the In.sub.x Ga.sub.1-x As thin film and formed of a lattice-bonded InP; and an upper semiconductor reflector is formed on a multilayer of an InAlAs/InAlGaAs heterogenous thin film on the buffer layer, which has a reflective index of 1, in which a laser beam is emitted from the surface of the same.
    • 由于使用具有期望晶格率的薄膜材料生长的电位使用非常小部分的活化层,并且由此产生连续振荡,因此改进的表面发射激光器件可以容易地改变发光波长 通过使用具有高反射率的反射器在室温下进行。 因此,增加了包括GaAs衬底的光学特性; 在GaAs衬底上由反射率为1的多层AlAs / GaAs异质薄膜形成下反射体; 在下反射器上由下反射器形成的齿形分级层和在组成分级方法中具有大晶格率的In x Ga 1-x As薄膜; 在In x Ga 1-x As分级层上形成一个齿形的InGaAs分级阱,作为In组成减少而不是分级层; 在In x Ga 1-x As薄膜上形成缓冲层,由晶格键合的InP形成; 并且在缓冲层上的反射率为1的InAlAs / InAlGaAs异质薄膜的多层上形成上半导体反射器,其中从其表面发射激光束。