GB841842A - Improvements in or relating to the formation of a layer of material exhibiting the photo-electric effect - Google Patents
Improvements in or relating to the formation of a layer of material exhibiting the photo-electric effectInfo
- Publication number
- GB841842A GB841842A GB2137555A GB2137555A GB841842A GB 841842 A GB841842 A GB 841842A GB 2137555 A GB2137555 A GB 2137555A GB 2137555 A GB2137555 A GB 2137555A GB 841842 A GB841842 A GB 841842A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- photo
- conductive
- solid
- anode
- 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
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/233—Manufacture of photoelectric screens or charge-storage screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/36—Photoelectric screens; Charge-storage screens
- H01J29/39—Charge-storage screens
- H01J29/45—Charge-storage screens exhibiting internal electric effects caused by electromagnetic radiation, e.g. photoconductive screen, photodielectric screen, photovoltaic screen
Abstract
841,842. Photo-conductive arrangements. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 4, 1956 [July 23, 1955], No. 21375/55. Class 37. A photo-conductive layer is formed by evaporating photo-conductive material in a gas on to a support to form a porous layer which is then heated to a temperature which is such as to increase its sensitivity but is below that which would change its crystalline form. A further solid layer may be evaporated on to the porous layer. Suitable materials are antimony tri-sulphide, zinc selenide, cadmium sulphide, cadmuim selenide, and germanium sulphide. Fig. 1 shows a television pick-up tube comprising a glass envelope 1 with an electron gun assembly 8, 10 and an optical window 3 forming the support for a transparent conductive coating 14, a porous, spongy photo-conductive layer 21 and a solid photo-conductive layer 22. Coating 14 which constitutes a signal electrode may consist of a tin salt. A grid 15 constitutes an ion trap and is connected to anode 16. Porous layer 21 is formed by heating the envelope including an evaporator boat 19 containing for example, antimony trisulphide, in an atmosphere of xenon, argon, nitrogen or air at a pressure of about 1 mm. Hg. During this process some of the material deposits on to grid 15 and anode 16. The evaporator boat 19 is then removed into side tube 2 which is sealed off. Layer 21 is then baked at a temperature between 140‹C and 200‹C for 15 minutes to increase its sensitivity. If a further layer of solid material is required, as described in Specification 827,058, anode 16 and grid 15 are inductively heated in vacuo to re-evaporate the material deposited thereon to form layer 22. Window 3 may be cooled during this process. The porous layer may be 2À5 Á thick and the solid layer 0À5 Á. Specification 841,843 also is referred to. Reference has been directed by the Comptroller to Specification 707,125.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL251194D NL251194A (en) | 1955-07-23 | ||
| GB2137555A GB841842A (en) | 1955-07-23 | 1955-07-23 | Improvements in or relating to the formation of a layer of material exhibiting the photo-electric effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2137555A GB841842A (en) | 1955-07-23 | 1955-07-23 | Improvements in or relating to the formation of a layer of material exhibiting the photo-electric effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB841842A true GB841842A (en) | 1960-07-20 |
Family
ID=10161862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2137555A Expired GB841842A (en) | 1955-07-23 | 1955-07-23 | Improvements in or relating to the formation of a layer of material exhibiting the photo-electric effect |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB841842A (en) |
| NL (1) | NL251194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582248A (en) * | 2020-12-14 | 2021-03-30 | 北京无线电计量测试研究所 | Electronic gun device for mercury ion microwave frequency standard |
-
0
- NL NL251194D patent/NL251194A/xx unknown
-
1955
- 1955-07-23 GB GB2137555A patent/GB841842A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582248A (en) * | 2020-12-14 | 2021-03-30 | 北京无线电计量测试研究所 | Electronic gun device for mercury ion microwave frequency standard |
| CN112582248B (en) * | 2020-12-14 | 2023-09-12 | 北京无线电计量测试研究所 | Electron gun device for mercury ion microwave frequency standard |
Also Published As
| Publication number | Publication date |
|---|---|
| NL251194A (en) |
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