摘要:
A heating element CVD device capable of providing a high productivity and decomposing and/or activating the material gas led into a processing container by a heating element and stacking film on a substrate disposed in the processing container, wherein the connection part area of the heating element to a connection terminal for connecting the hearing element to a power supply mechanism is not exposed to a space inside the processing container, specifically, the connection part area is covered by a cylindrical body or a platy body covering the connection part area while providing a space part thereof from the hearing element, or the connection part area allows the space part to be present in a space thereof from the connection terminal and is covered by the cylindrical body or platy body covering the connection part area while providing the space part in a space thereof from the heating element, and hydrogen gas is led from the connection terminal side into the processing container through the space part, whereby the portion of the heating element near the connection part to the power supply mechanism can be prevented from being deteriorated by the material gas, the material gas can be prevented from reacting with cleaning gas during the cleaning for removing the film adhered to the inside of the processing container, the service life of the heating element can be increased, and a film forming environment can be stabilized.
摘要:
A method for efficiently and completely removing a film deposited inside a film forming chamber and an in-situ cleaning method of a hot element CVD apparatus. A hot element is disposed in a chamber is heated up to a temperature of 2000° C. or higher after the chamber is exhausted. Thereafter a cleaning gas which is decomposed and/or activated by the hot element to generate an activated species that converts the deposited film into gaseous substance is introduced into the chamber.
摘要:
To provide a novel cyclohexane derivative, a cyclohexane derivative is defined by the formula (I) or a pharmacologically acceptable salt thereof: ##STR1## (wherein R.sup.1 and R.sup.2 may be the same or different from each other and each represents hydrogen or lower alkyl; R.sup.3 represents optionally substituted aryl or optionally substituted heteroaryl; X represents oxygen or sulfur; and Y represents a group represented by the formula: ##STR2## or the like). The compound of the present invention is useful as a preventive and therapeutic agent for diseases against which a potassium channel opening action is efficacious.
摘要翻译:为了提供新的环己烷衍生物,环己烷衍生物由式(I)或其药理学上可接受的盐定义:其中R 1和R 2可以彼此相同或不同,并且各自表示氢或 低级烷基; R 3表示任选取代的芳基或任选取代的杂芳基; X表示氧或硫; Y表示由下式表示的基团:等等)。 本发明的化合物可用作钾通道开放作用有效的疾病的预防和治疗剂。
摘要:
The present invention provides a thioformamide derivative represented by the following general formula (I) or a pharmacologically acceptable salt thereof, which is highly safe, easy to use, and useful as an excellent hypotensive or heart disease remedy: ##STR1## wherein Y represents ##STR2## or the like [wherein R.sup.7 represents benzyloxy or the like; R.sup.11 and R.sup.12 each represent hydrogen, hydroxyl, benzoyloxy, benzyloxy, ##STR3## (wherein R.sup.14 and R.sup.15 each represent hydrogen, benzyl or the like) or the like];Z represents --CH.sub.2 -- or the like; A represents imidazolyl or imidazopyridyl which may have one or two substituents, or the like; R.sup.1 and R.sup.2 each represent hydrogen, lower alkyl or the like; and R.sup.3 and R.sup.4 each represent hydrogen, lower alkyl or the like.
摘要翻译:PCT No.PCT / JP92 / 01297 Sec。 371日期1994年04月26日 102(e)日期1994年4月26日PCT提交1992年10月6日PCT公布。 出版物WO93 / 08168 日本1994年4月29日。本发明提供由以下通式(I)表示的硫代甲酰胺衍生物或其药理学上可接受的盐,其是高度安全,易于使用的,并且可用作优异的降压药或心脏病药物: (I)其中Y表示酰氧基等; R 11和R 12各自表示氢,羟基,苯甲酰氧基,苄氧基,苯甲酰基等)等。 Z表示-CH 2 - 等; A表示可具有一个或两个取代基的咪唑基或咪唑并吡啶等; R 1和R 2各自表示氢,低级烷基等; R 3和R 4各自表示氢,低级烷基等。
摘要:
A group III nitride crystal substrate is provided, wherein, a uniform distortion at a surface layer of the crystal substrate is equal to or lower than 1.7×10−3, and wherein a plane orientation of the main surface has an inclination angle equal to or greater than −10° and equal to or smaller than 10° in a [0001] direction with respect to a plane including a c axis of the crystal substrate. A group III nitride crystal substrate suitable for manufacturing a light emitting device with a blue shift of an emission suppressed, an epilayer-containing group III nitride crystal substrate, a semiconductor device and a method of manufacturing the same can thereby be provided.
摘要:
In a semiconductor device 100, it is possible to prevent C from piling up at a boundary face between an epitaxial layer 22 and a group III nitride semiconductor substrate 10 by the presence of 30×1010 pieces/cm2 to 2000×1010 pieces/cm2 of sulfide in terms of S and 2 at % to 20 at % of oxide in terms of O in a surface layer 12. By thus preventing C from piling up, a high-resistivity layer is prevented from being formed on the boundary face between the epitaxial layer 22 and the group III nitride semiconductor substrate 10. Accordingly, it is possible to reduce electrical resistance at the boundary face between the epitaxial layer 22 and the group III nitride semiconductor substrate 10, and improve the crystal quality of the epitaxial layer 22. Consequently, it is possible to improve the emission intensity and yield of the semiconductor device 100.
摘要翻译:在半导体器件100中,可以通过存在30×10 10片/ cm 2〜2000×10 10片/ cm 2的范围来防止C在外延层22和III族氮化物半导体衬底10之间的边界面堆积 表面层12中的S为硫化物,以O计为2at%〜20at%的氧化物。通过防止C堆积,可以防止在外延层之间的界面上形成高电阻率层 层22和III族氮化物半导体衬底10.因此,可以减小外延层22和III族氮化物半导体衬底10之间的边界面处的电阻,并且提高外延层22的晶体质量。结果 ,可以提高半导体装置100的发光强度和产量。
摘要:
A group III nitride crystal substrate is provided wherein, a uniform distortion at a surface layer of the crystal substrate is equal to or lower than 1.9×10−3, and wherein the main surface has a plane orientation inclined in a direction at an angle equal to or greater than 10° and equal to or smaller than 81° with respect to one of (0001) and (000-1) planes of the crystal substrate. A group III nitride crystal substrate suitable for manufacturing a light emitting device with a blue shift of an emission suppressed, an epilayer-containing group III nitride crystal substrate, a semiconductor device and a method of manufacturing the same can thereby be provided.
摘要:
A compound semiconductor substrate 10 according to the present invention is comprised of a Group III nitride and has a surface layer 12 containing a chloride of not less than 200×1010 atoms/cm2 and not more than 12000×1010 atoms/cm2 in terms of Cl and an oxide of not less than 3.0 at % and not more than 15.0 at % in terms of O, at a surface. The inventors conducted elaborate research and newly discovered that when the surface layer 12 at the surface of the compound semiconductor substrate 10 contained the chloride of not less than 200×1010 atoms/cm2 and not more than 12000×1010 atoms/cm2 in terms of Cl and the oxide of not less than 3.0 at % and not more than 15.0 at % in terms of O, Si was reduced at an interface between the compound semiconductor substrate 10 and an epitaxial layer 14 formed thereon and, as a result, the electric resistance at the interface was reduced.
摘要翻译:根据本发明的化合物半导体衬底10由III族氮化物组成,其表面层12含有不低于200×10 10原子/ cm 2且不大于12000×10 10原子/ cm 2的氯化物 以及表面为O以上且3.0at%以上且15.0at%以下的氧化物。 本发明人进行了详细的研究,并且新发现,当化合物半导体基板10的表面上的表面层12含有不小于200×10 10原子/ cm 2且不大于12000×10 10原子/ cm 2的氯化物时,以Cl 并且氧化物以O计为3.0at%且不大于15.0at%时,在化合物半导体衬底10和形成在其上的外延层14之间的界面处Si还原,结果,电阻 在界面缩小。
摘要:
A gallium nitride-based semiconductor optical device is provided that includes an indium-containing gallium nitride-based semiconductor layer that exhibit low piezoelectric effect and high crystal quality. The gallium nitride-based semiconductor optical device 11a includes a GaN support base 13, a GaN-based semiconductor region 15, and well layers 19. A primary surface 13a tilts from a surface orthogonal to a reference axis that extends in a direction from one crystal axis of the m-axis and the a-axis of GaN toward the other crystal axis. The tilt angle AOFF is 0.05 degree or more to less than 15 degrees. The angle AOFF is equal to the angle defined by a vector VM and a vector VN. The inclination of the primary surface is shown by a typical m-plane SM and m-axis vector VM. The GaN-based semiconductor region 15 is provided on the primary surface 13a. In the well layers 19 in an active layer 17, both the m-plane and the a-plane of the well layers 19 tilt from a normal axis AN of the primary surface 13a. The indium content of the well layers 19 is 0.1 or more.
摘要:
A nitride semiconductor wafer is planar-processed by grinding a bottom surface of the wafer, etching the bottom surface by, e.g., KOH for removing a bottom process-induced degradation layer, chamfering by a rubber whetstone bonded with 100 wt %-60 wt % #3000-#600 diamond granules and 0 wt %-40 wt % oxide granules, grinding and polishing a top surface of the wafer, etching the top surface for eliminating a top process-induced degradation layer and maintaining a 0.5 μm-10 μm thick edge process-induced degradation layer.