GB685070A - Improvements relating to crystal amplifying devices - Google Patents

Improvements relating to crystal amplifying devices

Info

Publication number
GB685070A
GB685070A GB941250A GB941250A GB685070A GB 685070 A GB685070 A GB 685070A GB 941250 A GB941250 A GB 941250A GB 941250 A GB941250 A GB 941250A GB 685070 A GB685070 A GB 685070A
Authority
GB
United Kingdom
Prior art keywords
crystal
improvements relating
amplifying devices
bismuth
april
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB941250A
Inventor
James Tyldesley Kendall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB941250A priority Critical patent/GB685070A/en
Publication of GB685070A publication Critical patent/GB685070A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
    • H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
    • H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
    • H01L29/167—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table further characterised by the doping material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
    • H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
    • H01L29/70—Bipolar devices
    • H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
    • H01L29/73—Bipolar junction transistors

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Catalysts (AREA)
  • Amplifiers (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)

Abstract

685,070. Semi-conductor amplifiers. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. April 11, 1951 [April 17, 1950], No. 9412/50. Class 40 (iv). A transistor amplifying device comprises a semi-conductor crystal of α-tin. N-type conductivity may be provided by introducing donor materials such as phosphorus, arsenic, antimony or bismuth, and P-type by introducing materials such as aluminium, gallium, indium or thallium. Stability of the crystal may be improved by adding lead or bismuth.
GB941250A 1950-04-17 1950-04-17 Improvements relating to crystal amplifying devices Expired GB685070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB941250A GB685070A (en) 1950-04-17 1950-04-17 Improvements relating to crystal amplifying devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB941250A GB685070A (en) 1950-04-17 1950-04-17 Improvements relating to crystal amplifying devices

Publications (1)

Publication Number Publication Date
GB685070A true GB685070A (en) 1952-12-31

Family

ID=9871468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB941250A Expired GB685070A (en) 1950-04-17 1950-04-17 Improvements relating to crystal amplifying devices

Country Status (1)

Country Link
GB (1) GB685070A (en)

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