GB691795A - Improvements relating to the manufacture of photo-electric sensitive or secondary electron emissive surfaces - Google Patents

Improvements relating to the manufacture of photo-electric sensitive or secondary electron emissive surfaces

Info

Publication number
GB691795A
GB691795A GB1557350A GB1557350A GB691795A GB 691795 A GB691795 A GB 691795A GB 1557350 A GB1557350 A GB 1557350A GB 1557350 A GB1557350 A GB 1557350A GB 691795 A GB691795 A GB 691795A
Authority
GB
United Kingdom
Prior art keywords
bismuth
silver
photo
manufacture
layer
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
GB1557350A
Inventor
Alfred Hermann Sommer
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1557350A priority Critical patent/GB691795A/en
Publication of GB691795A publication Critical patent/GB691795A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes
    • H01J40/06—Photo-emissive cathodes

Landscapes

  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

691,795. Cathode materials and processing. ELECTRIC & MUSICAL INDUSTRIES, Ltd. June 13, 1951 [June 22, 1950], No. 15573/50. Class 39(i). In the manufacture of a photo-electric or secondary-electron-emitting surface, layers of bismuth and silver are deposited, and the bismuth is oxidised through the silver layer solely by exposure to.oxygen. Bismuth and silver layers are condensed on to the glass envelope of a photoelectric cell into which oxygen is then admitted at room temperature; the oxygen passes through the silver layer to oxidise, wholly or partially, the bismuth to a depth of 5-10 atoms. The bismuth layer may be 30 atoms thick and the silver layer 5-10 atoms. The cell is exhausted and the semitransparent or opaque cathode sensitised by exposure to caesium. The layers may be condensed through a mesh on to a target for a television tube; alternatively a composite layer may be aggregated by heat to form a mosaic electrode.
GB1557350A 1950-06-22 1950-06-22 Improvements relating to the manufacture of photo-electric sensitive or secondary electron emissive surfaces Expired GB691795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1557350A GB691795A (en) 1950-06-22 1950-06-22 Improvements relating to the manufacture of photo-electric sensitive or secondary electron emissive surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1557350A GB691795A (en) 1950-06-22 1950-06-22 Improvements relating to the manufacture of photo-electric sensitive or secondary electron emissive surfaces

Publications (1)

Publication Number Publication Date
GB691795A true GB691795A (en) 1953-05-20

Family

ID=10061542

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1557350A Expired GB691795A (en) 1950-06-22 1950-06-22 Improvements relating to the manufacture of photo-electric sensitive or secondary electron emissive surfaces

Country Status (1)

Country Link
GB (1) GB691795A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4169985A (en) * 1971-12-06 1979-10-02 Owens-Illinois, Inc. Gas discharge device
US4218632A (en) * 1971-12-06 1980-08-19 Owens-Illinois, Inc. Gas discharge device
US4731560A (en) 1970-08-06 1988-03-15 Owens-Illinois Television Products, Inc. Multiple gaseous discharge display/memory panel having improved operating life
US4794308A (en) * 1970-08-06 1988-12-27 Owens-Illinois Television Products Inc. Multiple gaseous discharge display/memory panel having improved operating life
US5776538A (en) * 1994-07-28 1998-07-07 Pierle; Robert L. Method of manufacture for microchannel plate having both improved gain and signal-to-noise ratio

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731560A (en) 1970-08-06 1988-03-15 Owens-Illinois Television Products, Inc. Multiple gaseous discharge display/memory panel having improved operating life
US4794308A (en) * 1970-08-06 1988-12-27 Owens-Illinois Television Products Inc. Multiple gaseous discharge display/memory panel having improved operating life
US4169985A (en) * 1971-12-06 1979-10-02 Owens-Illinois, Inc. Gas discharge device
US4218632A (en) * 1971-12-06 1980-08-19 Owens-Illinois, Inc. Gas discharge device
US5776538A (en) * 1994-07-28 1998-07-07 Pierle; Robert L. Method of manufacture for microchannel plate having both improved gain and signal-to-noise ratio

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