Single crystal GaN substrate and laser diode produced thereon
    62.
    发明公开
    Single crystal GaN substrate and laser diode produced thereon 有权
    单晶GaN衬底,因此产生的激光二极管

    公开(公告)号:EP1995796A3

    公开(公告)日:2009-02-18

    申请号:EP08014729.1

    申请日:2002-10-08

    IPC分类号: H01L33/00 C30B25/02 C30B23/02

    摘要: A single crystal GaN substrate having a top surface, a bottom surface, a diameter of more than or equal to 1 inch (25mm) and a thickness of more than or equal to 120µm, the top surface comprising: a linear low dislocation single crystal region (Z) extending in both a direction of thickness and a direction defined on the top surface; and two linear voluminous defect accumulating regions (H) extending in the same direction as the low dislocation single crystal region (Z), having interfaces (K) on both sides and being in contact with the low dislocation single crystal regions (Z) via the interfaces (K), the low dislocation density single crystal region (Z) being sandwiched by the linear voluminous defect accumulating regions (H).

    METHOD AND APPARATUS FOR PRODUCING SINGLE CRYSTAL OF SILICON CARBIDE
    64.
    发明授权
    METHOD AND APPARATUS FOR PRODUCING SINGLE CRYSTAL OF SILICON CARBIDE 有权
    方法和装置用于硅的单晶生产

    公开(公告)号:EP1158077B1

    公开(公告)日:2007-08-29

    申请号:EP00985890.3

    申请日:2000-12-26

    摘要: Silicon carbide single crystal is produced by allowing a silicon raw material to continuously react with a carbon raw material to generate gas and allowing the gas to reach a seed crystal substrate on which a silicon carbide single crystal grows. Preferably, the silicon raw material is continuously fed onto the carbon raw material placed in a reaction crucible, and the carbon raw material is maintained at a temperature such that carbon is allowed to react with silicon in a molten or gaseous state to generate the reaction gas. An apparatus used for producing the silicon carbide single crystal comprises a reaction crucible, and a seed crystal substrate disposed in the crucible; and further comprises means for maintaining the carbon raw material placed in the crucible at a temperature such that carbon is allowed to react with silicon in a molten or gaseous state to generate the reaction gas, and means for continuously feeding the silicon raw material onto the carbon raw material placed in the crucible.

    Method for growing single crystal of silicon carbide
    66.
    发明公开
    Method for growing single crystal of silicon carbide 有权
    一种用于生长碳化硅的单晶过程

    公开(公告)号:EP1803840A3

    公开(公告)日:2007-07-18

    申请号:EP07006992.7

    申请日:1999-12-24

    CPC分类号: C30B23/00 C30B29/36

    摘要: In feeding a silicon carbide-forming gas generated by a method of heat-subliming silicon carbide or the like to the surface of a seed crystal (2) so as to grow a silicon carbide single crystal (3) on the seed crystal, the temperature gradient from the back surface of the seed crystal (2) toward the crucible cap (8) side is rendered zero or a positive value, whereby the back surface sublimation from the back surface of the seed crystal (2) is prevented or suppressed.
    Furthermore, by allowing the inner wall of the growth vessel in the periphery of the seed crystal to have a temperature higher than the temperature on the surface of the seed crystal (2), a polycrystal silicon carbide is prevented or suppressed from growing and thereby inhibiting the growth of a silicon carbide single crystal (3).

    METHOD FOR PREPARING SINGLE CRYSTAL OXIDE THIN FILM
    67.
    发明公开
    METHOD FOR PREPARING SINGLE CRYSTAL OXIDE THIN FILM 审中-公开
    METHOD FOR THIN单晶氧化物膜

    公开(公告)号:EP1314800A4

    公开(公告)日:2007-02-14

    申请号:EP01961296

    申请日:2001-08-31

    摘要: The present invention is an tri-phase epitaxy method for preparing a single crystal oxide thin film, comprising the steps of depositing on a substrate an oxide thin film serving as a seed layer and having the same composition as that of an oxide thin film to be formed, depositing on the seed layer a thin film comprising a substance capable of being melted and liquidized by heat from the substrate and dissolving the oxide to be subsequent by deposited onto the seed layer, heating the substrate to form a liquid layer, and depositing an oxide on the seed layer through the liquid layer by use of a vapor-phase epitaxy method to form the single crystal oxide thin film. In this method, the oxygen partial pressure on the liquid layer is set in the range of 1.0 to 760 Torr during the film-forming step.

    FERROMAGNETIC p-TYPE SINGLE CRYSTAL ZINC OXIDE AND METHOD FOR PREPARATION THEREOF
    69.
    发明授权
    FERROMAGNETIC p-TYPE SINGLE CRYSTAL ZINC OXIDE AND METHOD FOR PREPARATION THEREOF 有权
    铁磁P型ZINKOXIDEINKRISTALL及其制造方法

    公开(公告)号:EP1219731B1

    公开(公告)日:2004-04-28

    申请号:EP00942464.9

    申请日:2000-07-03

    IPC分类号: C30B29/16 C30B23/02

    摘要: The present invention provides a single-crystal ZnO thin film having a high ferromagnetic transition temperature. In one aspect of the present invention, the ZnO thin film comprises a ferromagnetic p-type single-crystal zinc oxide including a transition metal element consisting of Mn, and a p-type dopant. In another aspect of the present invention, the thin film comprises a ferromagnetic p-type single-crystal zinc oxide including a transition metal element consisting of Mn, a p-type dopant, and an n-type dopant. The single-crystal zinc oxide material can be applied to quantum computers and high-capacity magnetic-optical recording medium by combining with conventional n-type or p-type transparent electrode ZnO materials or optical fibers, and to powerful information-communication devices or quantum computers as a photoelectric material usable for a wide range from visible light to ultraviolet light.