GB1476471A - Gallium arsenide photocathodes - Google Patents

Gallium arsenide photocathodes

Info

Publication number
GB1476471A
GB1476471A GB326374A GB326374A GB1476471A GB 1476471 A GB1476471 A GB 1476471A GB 326374 A GB326374 A GB 326374A GB 326374 A GB326374 A GB 326374A GB 1476471 A GB1476471 A GB 1476471A
Authority
GB
United Kingdom
Prior art keywords
glass
substrate
jan
cathode
layers
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
GB326374A
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
Priority to GB326374A priority Critical patent/GB1476471A/en
Publication of GB1476471A publication Critical patent/GB1476471A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/34—Photo-emissive cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/34—Photoemissive electrodes
    • H01J2201/342—Cathodes
    • H01J2201/3421—Composition of the emitting surface
    • H01J2201/3423—Semiconductors, e.g. GaAs, NEA emitters

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

1476471 Photocathodes STAXDABD TELEPHONES & CABLES Ltd 16 Jan 1975 [24 Jan 1974] 03263/74 Heading H1D [Also in Division B3] A transmission type photocathode comprises an active GaAs layer 3 and a GaAlAs layer 4 bonded with solder glass 5 (see Division C1) to a spinel or sapphire substrate 6. The cathode is prepared by growing on a P-type GaAs substrate 2, blocking P-type GaAs layer 1, and layers 3, 4. The outer surfaces are then passivated with pyrolytic SiO 2 . The spinel substrate 6 is coated with glass 5 outgassed and lapped. The assembly 1 ... 4 is pressed against the glass and heated with the glass softens. Layers 1, 2 are removed by electrochemical and non-selective bubble etching as described in Specification 1,448,600. The cathode is activated with Cs.
GB326374A 1975-01-16 1975-01-16 Gallium arsenide photocathodes Expired GB1476471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB326374A GB1476471A (en) 1975-01-16 1975-01-16 Gallium arsenide photocathodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB326374A GB1476471A (en) 1975-01-16 1975-01-16 Gallium arsenide photocathodes

Publications (1)

Publication Number Publication Date
GB1476471A true GB1476471A (en) 1977-06-16

Family

ID=9755039

Family Applications (1)

Application Number Title Priority Date Filing Date
GB326374A Expired GB1476471A (en) 1975-01-16 1975-01-16 Gallium arsenide photocathodes

Country Status (1)

Country Link
GB (1) GB1476471A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041119A1 (en) * 1980-06-02 1981-12-09 International Business Machines Corporation Cold electron emission device
FR2515870A1 (en) * 1981-11-04 1983-05-06 Labo Electronique Physique PHOTOCATHODE FOR ELECTRONIC TUBE ENTRY COMPRISING A SEMICONDUCTOR DEVICE WITH TRANSMISSION PHOTO-EMISSION
FR2553934A1 (en) * 1983-10-19 1985-04-26 Labo Electronique Physique SEMICONDUCTOR STRUCTURE-VITREOUS SUPPORT AND DEVICES PRODUCED WITH SUCH A STRUCTURE
GB2244853A (en) * 1985-12-31 1991-12-11 Int Standard Electric Corp Method of making photocathodes for image intensifier tubes

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0041119A1 (en) * 1980-06-02 1981-12-09 International Business Machines Corporation Cold electron emission device
FR2515870A1 (en) * 1981-11-04 1983-05-06 Labo Electronique Physique PHOTOCATHODE FOR ELECTRONIC TUBE ENTRY COMPRISING A SEMICONDUCTOR DEVICE WITH TRANSMISSION PHOTO-EMISSION
EP0078583A1 (en) * 1981-11-04 1983-05-11 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Input photo cathode for an electronic tube comprising a semiconductor device as transmitting photo emitter
FR2553934A1 (en) * 1983-10-19 1985-04-26 Labo Electronique Physique SEMICONDUCTOR STRUCTURE-VITREOUS SUPPORT AND DEVICES PRODUCED WITH SUCH A STRUCTURE
EP0139334A2 (en) * 1983-10-19 1985-05-02 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Semiconductor-glass support structure and devices provided with such a structure
EP0139334A3 (en) * 1983-10-19 1985-06-19 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Semiconductor-glass support structure and devices provided with such a structure
GB2244853A (en) * 1985-12-31 1991-12-11 Int Standard Electric Corp Method of making photocathodes for image intensifier tubes
GB2244853B (en) * 1985-12-31 1992-03-18 Int Standard Electric Corp Method of making photocathodes for image intensifier tubes
US5298831A (en) * 1985-12-31 1994-03-29 Itt Corporation Method of making photocathodes for image intensifier tubes

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee