GB356395A - Improvements relating to photo-electric cells - Google Patents
Improvements relating to photo-electric cellsInfo
- Publication number
- GB356395A GB356395A GB22105/30A GB2210530A GB356395A GB 356395 A GB356395 A GB 356395A GB 22105/30 A GB22105/30 A GB 22105/30A GB 2210530 A GB2210530 A GB 2210530A GB 356395 A GB356395 A GB 356395A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caesium
- oxide
- silver
- layer
- deposited
- 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
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
- Inorganic Insulating Materials (AREA)
Abstract
356,395. Photo-electric cells. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPEN-FABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. July 22. 1930, No. 22105. Convention date, Feb. 25. [Class 39 (i).] The photo-electric electrode contains an alkali metal deposited on an oxide of an alkali metal having a composition R2O where R is the metal. A layer of silver is deposited on the envelope by volatilizing a strip of silver short-circuinting the leads of a ring-shaped anode ; caesium is introduced into the envelope and deposits on the silver layer. Oxygen is then admitted to oxidize the caesium forming Cs2O4. A further quantity of caesium is admitted so as to reduce this oxide to Cs2O, the reduction being assisted by heating at 200‹ C. ; the caesium is partly adsorbed in the oxide layer and excess is removed by a getter or pump. Alternatively Cs2O may be placed on the anode and volatilized by heating at 230‹ C. Calcium fluoride may be placed on the layer of silver to improve the adherence of the oxide. A mixture of one part of caesium chromate and 2 parts of zirconium may be heated to 725‹ C. to produce caesium and caesium oxide which are deposited on the silver layer, excess caesium being deposited on the mixture. Specifications 319,650, 323,718, and 332,002, [all in Class 39 (i), Electric lamps, Arc &c.], are referred to.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL711007X | 1930-02-25 | ||
| NL356395X | 1930-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB356395A true GB356395A (en) | 1931-09-10 |
Family
ID=26643673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22105/30A Expired GB356395A (en) | 1930-02-25 | 1930-07-22 | Improvements relating to photo-electric cells |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR711007A (en) |
| GB (1) | GB356395A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2723324A (en) * | 1953-04-09 | 1955-11-08 | Hughes Aircraft Co | Single-action switch |
-
1930
- 1930-07-22 GB GB22105/30A patent/GB356395A/en not_active Expired
-
1931
- 1931-02-11 FR FR711007D patent/FR711007A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2723324A (en) * | 1953-04-09 | 1955-11-08 | Hughes Aircraft Co | Single-action switch |
Also Published As
| Publication number | Publication date |
|---|---|
| FR711007A (en) | 1931-09-01 |
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