GB520005A - Asymmetrical resistance - Google Patents

Asymmetrical resistance

Info

Publication number
GB520005A
GB520005A GB35164/38A GB3516438A GB520005A GB 520005 A GB520005 A GB 520005A GB 35164/38 A GB35164/38 A GB 35164/38A GB 3516438 A GB3516438 A GB 3516438A GB 520005 A GB520005 A GB 520005A
Authority
GB
United Kingdom
Prior art keywords
dec
instance
minutes
heating
coating
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
GB35164/38A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB520005A publication Critical patent/GB520005A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104—Forming layers
    • H01L21/02365—Forming inorganic semiconducting materials on a substrate
    • H01L21/02367—Substrates
    • H01L21/0237—Materials
    • H01L21/02425—Conductive materials, e.g. metallic silicides
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104—Forming layers
    • H01L21/02365—Forming inorganic semiconducting materials on a substrate
    • H01L21/02518—Deposited layers
    • H01L21/02521—Materials
    • H01L21/02565—Oxide semiconducting materials not being Group 12/16 materials, e.g. ternary compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/02104—Forming layers
    • H01L21/02365—Forming inorganic semiconducting materials on a substrate
    • H01L21/02612—Formation types
    • H01L21/02614—Transformation of metal, e.g. oxidation, nitridation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/16—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising cuprous oxide or cuprous iodide
    • H01L21/161—Preparation of the foundation plate, preliminary treatment oxidation of the foundation plate, reduction treatment

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Conductive Materials (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

520,005. Alloys; coating metals. STANDARD TELEPHONES & CABLES, Ltd. Dec. 2, 1938, No. 35164. Convention date, Dec. 4, 1937. [Classes 82 (i) and 82 (ii)] [Also in Group XXXVI] A copper cuprous oxide rectifier is made from commercial copper of high purity to which has been added from 0À05 - 0À4 per cent. of lead. Such an alloy is formed into sheets, and blanks and washers punched therefrom and an oxide-coating is produced thereon, for instance by heating at 1000‹C. for 8 minutes in an oxidizing atmosphere, heating at 500‹C. for 5 minutes and quenching in cold water. The resulting oxide layer is heated to provide a low ohmic contact surface thereon, for instance by the process described in Specification 519,987.
GB35164/38A 1937-12-04 1938-12-02 Asymmetrical resistance Expired GB520005A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US178052A US2143824A (en) 1937-12-04 1937-12-04 Asymmetrical conductor

Publications (1)

Publication Number Publication Date
GB520005A true GB520005A (en) 1940-04-11

Family

ID=22650987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35164/38A Expired GB520005A (en) 1937-12-04 1938-12-02 Asymmetrical resistance

Country Status (4)

Country Link
US (1) US2143824A (en)
CH (1) CH214269A (en)
FR (1) FR846918A (en)
GB (1) GB520005A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2484252A (en) * 1944-11-07 1949-10-11 Bell Telephone Labor Inc Asymmetrical conductor
GB1020914A (en) * 1961-11-10 1966-02-23 Gen Electric Improvements in vacuum circuit interrupter

Also Published As

Publication number Publication date
US2143824A (en) 1939-01-10
CH214269A (en) 1941-04-15
FR846918A (en) 1939-09-28

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