GB632962A - Improvements in or relating to photo-electric cells - Google Patents

Improvements in or relating to photo-electric cells

Info

Publication number
GB632962A
GB632962A GB12238/47A GB1223847A GB632962A GB 632962 A GB632962 A GB 632962A GB 12238/47 A GB12238/47 A GB 12238/47A GB 1223847 A GB1223847 A GB 1223847A GB 632962 A GB632962 A GB 632962A
Authority
GB
United Kingdom
Prior art keywords
helix
cathode
antimony
alloy
iron
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
GB12238/47A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB632962A publication Critical patent/GB632962A/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
    • H01J40/16—Photoelectric discharge tubes not involving the ionisation of a gas having photo- emissive cathode, e.g. alkaline photoelectric cell

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

632,962. Cathode materials. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. May 6, 1947, No. 12238. Convention date, Dec. 15, 1944. [Class 39 (i)] The cathode of a photoelectric cell is constituted by an alloy of one or more of the elements arsenic, antimony and bismuth with an alkali metal, the alloy being applied to an iron substratum which is preferably oxidized before the alloy is applied. The cathode may be formed by arranging within the envelope an iron helix 4 and a tungsten helix 5 coated with a layer of antimony. After exhaustion the helix 4 is heated so that it volatilizes and the wall of the cell is coated with a transparent film of iron. Oxygen is introduced through tube 7 up to a pressure of 50 mms. of mercury, after which a glow discharge is maintained for two minutes between the helix 4 as anode and the wall as cathode, current leads 6 being provided for the wall. The bulb is then exhausted, the antimony volatilized by heating helix 5, and caesium introduced through tube 8.
GB12238/47A 1944-12-15 1947-05-06 Improvements in or relating to photo-electric cells Expired GB632962A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE632962X 1944-12-15

Publications (1)

Publication Number Publication Date
GB632962A true GB632962A (en) 1949-12-05

Family

ID=3876100

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12238/47A Expired GB632962A (en) 1944-12-15 1947-05-06 Improvements in or relating to photo-electric cells

Country Status (1)

Country Link
GB (1) GB632962A (en)

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