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    • 2. 发明专利
    • FORMATION OF P-N JUNCTION
    • JPH03136235A
    • 1991-06-11
    • JP27428089
    • 1989-10-21
    • AGENCY IND SCIENCE TECHNSUTAAROI SANGYO KK
    • SATO MAMORUTOKUMARU YOZOSHIMOIYA YOSHINOBU
    • C01B21/076C01B21/072C23C14/48H01L21/203H01L21/265
    • PURPOSE:To form a uniform mixing layer on the surface of an Si wafer or the like and to form an electrically stable and superior thin film type N-type semiconductor to form a P-N junction by a method wherein a thin film type N-type semiconductor layer is formed on the surface of the P-type semiconductor by performing simultaneous ly an ion implantation and a vacuum deposition. CONSTITUTION:A thin film type N-type semiconductor layer is formed on the surface of a P-type semiconductor 7 by performing simultaneously an ion implantation and a vacuum, deposition. For example, an ionimplantation device is used as shown in the diagram, the P-type Si wafer single crystal 7 subjected to an ultrasonic cleaning is placed on a sample stand 17 toward the direction of an ion implantation and after the interior of the device is hermetically sealed, the interior is evacuated by a turbo- molecular pump up to reach 5X10 Torr or thereabouts. Then, in order to remove gaseous molecules being occluded in Al which is a deposition substance, Al placed on a deposition device 11 is preheated as a shutter is put up on the substrate 7. After that, while the amount of deposition of Al and the amount of N ions are respectively adjusted by a film thickness meter 12 and a current integrating meter 19, the shutter is opened to execute a mixing treatment and an AIN thin film is formed on the wafer 7.