GB806789A - Improvements in or relating to cadmium sulphide - Google Patents

Improvements in or relating to cadmium sulphide

Info

Publication number
GB806789A
GB806789A GB274456A GB274456A GB806789A GB 806789 A GB806789 A GB 806789A GB 274456 A GB274456 A GB 274456A GB 274456 A GB274456 A GB 274456A GB 806789 A GB806789 A GB 806789A
Authority
GB
United Kingdom
Prior art keywords
crystal
activated
support
cadmium sulphide
heated
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
GB274456A
Inventor
John Woods
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB274456A priority Critical patent/GB806789A/en
Publication of GB806789A publication Critical patent/GB806789A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional radiating surfaces
    • H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
    • H05B33/145—Arrangements of the electroluminescent material
    • 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

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)
  • Photovoltaic Devices (AREA)
  • Led Devices (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

806,789. Semi-conductor devices. GENERAL ELECTRIC CO, Ltd. April 25, 1957 [Jan. 27, 1956], No. 2744/56. Class 37. [Also in Group XL (a)] A crystalline body of cadmium sulphide is activated, to reduce its resistivity and to increase its photosensitivity, by the application to the body of an electric field sufficient to cause dielectric breakdown, followed by the passage through the body of a current at a density of not less than 0.1 amp./sq. cm. Preferably the body is heated from an external source during the process. As described, in the manufacture of a photo-conductive cell, a thin flat grown single crystal of cadmium sulphide is mounted on a ceramic support, and two lead wires sealed through the support make connection with graphite coatings disposed at opposite ends of the exposed face of the crystal which is disposed in an oven and, having been connected in series with a high resistance is heated to 400‹ C. and a voltage sufficient to cause dielectric breakdown is applied for five minutes, after which the crystal is allowed to cool. The crystal and its support are then enclosed in transparent synthetic resin. A crystal activated according to the invention may also be used in conjunction with an electroluminescent element, e.g. zinc sulphide activated by copper, in an electro-optical trigger device; further possible applications are large area rectifiers and photovoltaic cells.
GB274456A 1956-01-27 1956-01-27 Improvements in or relating to cadmium sulphide Expired GB806789A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB274456A GB806789A (en) 1956-01-27 1956-01-27 Improvements in or relating to cadmium sulphide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB274456A GB806789A (en) 1956-01-27 1956-01-27 Improvements in or relating to cadmium sulphide

Publications (1)

Publication Number Publication Date
GB806789A true GB806789A (en) 1958-12-31

Family

ID=9745070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB274456A Expired GB806789A (en) 1956-01-27 1956-01-27 Improvements in or relating to cadmium sulphide

Country Status (1)

Country Link
GB (1) GB806789A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283965B (en) * 1959-05-06 1968-11-28 Texas Instruments Inc Hermetically sealed semiconductor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283965B (en) * 1959-05-06 1968-11-28 Texas Instruments Inc Hermetically sealed semiconductor device

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