US2380880A - Alternating electric current rectifier of the selenium type - Google Patents
Alternating electric current rectifier of the selenium type Download PDFInfo
- Publication number
- US2380880A US2380880A US518886A US51888644A US2380880A US 2380880 A US2380880 A US 2380880A US 518886 A US518886 A US 518886A US 51888644 A US51888644 A US 51888644A US 2380880 A US2380880 A US 2380880A
- Authority
- US
- United States
- Prior art keywords
- electric current
- alternating electric
- current rectifier
- selenium
- selenium type
- 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 - Lifetime
Links
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title description 6
- 229910052711 selenium Inorganic materials 0.000 title description 6
- 239000011669 selenium Substances 0.000 title description 6
- 229910052738 indium Inorganic materials 0.000 description 6
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 2
- 229910000846 In alloy Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/06—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising selenium or tellurium in uncombined form other than as impurities in semiconductor bodies of other materials
- H01L21/12—Application of an electrode to the exposed surface of the selenium or tellurium after the selenium or tellurium has been applied to the foundation plate
Definitions
- a rectifier embodying the invention is found to possess important advantages, in particular the rectification ratio has a satisfactorily high value while the so-called. bottom-bend" characteristlc is relatively low.
- the counter-electrode may be constituted by a layer 2 cum. (cl. ins-see)
- the coimter-electrode may however, be formed in other ways for example by sprayins, volatilisins or sputtering.
- An alternating electric current rectifier oi the selenium type described provided with a counof metallic indium applied to the selenium layer under considerable pressure.
- the suriace oi the metal must however, be as clean and iresh as possible and should preferably be cleaned in any suitable manner before being applied to the selenium layer.
- ter-electrode composed of indium, tor the purpose specified.
- a rectifier comprising a base plate provided with a layer of selenium, and a counter-electrode composed oi a layer oi indium applied to the selenium layer under considerable preuure.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Detergent Compositions (AREA)
- Light Receiving Elements (AREA)
Description
Patented July 31, '1945 UNITED STATES PATENT OFFICE ALTEBNATING ELECTRIC CURRENT RECTI- FIER OF THE SELENIUII ma Leslie Ernest Thompson and Alexander Jenkins, King's CroI, London, England, In, by meme assignments, to The Union Switch Mid Signal Company; Bwlaavale,
lvania oirennsy l'a., a corporation No Application January 19,1044, Se-
rial No. 518,888. In Great Britain October 19.
mainly of indium instead of the metals or alloys hitherto utilized.
A rectifier embodying the invention is found to possess important advantages, in particular the rectification ratio has a satisfactorily high value while the so-called. bottom-bend" characteristlc is relatively low.
In carrying the invention into practice, the counter-electrode may be constituted by a layer 2 cum. (cl. ins-see) The coimter-electrode may however, be formed in other ways for example by sprayins, volatilisins or sputtering.
The favourable characteristics of the improved rectifier above indicated may be still further increased by the addition oi relatively small quantitles of other metals or substances to the indium so that the counter-electrode is composed. for
. example, of an indium alloy or mixture containing however a preponderating proportion 0! indium and the invention may be varied in this and other respects without exceeding its scope.
Having now described our invention. what we claim as new and desire to secure by Letters Patent is: p V
1. An alternating electric current rectifier oi the selenium type described provided with a counof metallic indium applied to the selenium layer under considerable pressure. The suriace oi the metal must however, be as clean and iresh as possible and should preferably be cleaned in any suitable manner before being applied to the selenium layer.
ter-electrode composed of indium, tor the purpose specified.
,2. A rectifier comprising a base plate provided with a layer of selenium, and a counter-electrode composed oi a layer oi indium applied to the selenium layer under considerable preuure.
1m ERNEST THOMPSON. ALEXANDER JENKINS.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB14611/42A GB560869A (en) | 1942-10-19 | 1942-10-19 | Improvements relating to alternating electric current rectifiers of the selenium type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2380880A true US2380880A (en) | 1945-07-31 |
Family
ID=10044356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US518886A Expired - Lifetime US2380880A (en) | 1942-10-19 | 1944-01-19 | Alternating electric current rectifier of the selenium type |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2380880A (en) |
| FR (1) | FR932749A (en) |
| GB (1) | GB560869A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458013A (en) * | 1944-03-04 | 1949-01-04 | Asea Ab | Selenium rectifier element and method of manufacturing same |
| US2496432A (en) * | 1946-05-21 | 1950-02-07 | Westinghouse Electric Corp | Selenium rectifier |
| US2647226A (en) * | 1947-09-20 | 1953-07-28 | Asea Ab | Dry rectifier valve plate |
| US2733390A (en) * | 1952-06-25 | 1956-01-31 | scanlon | |
| US2762953A (en) * | 1951-05-15 | 1956-09-11 | Sylvania Electric Prod | Contact rectifiers and methods |
| US2907935A (en) * | 1955-02-26 | 1959-10-06 | Siemens Ag | Junction-type semiconductor device |
-
1942
- 1942-10-19 GB GB14611/42A patent/GB560869A/en not_active Expired
-
1944
- 1944-01-19 US US518886A patent/US2380880A/en not_active Expired - Lifetime
-
1946
- 1946-08-26 FR FR932749D patent/FR932749A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458013A (en) * | 1944-03-04 | 1949-01-04 | Asea Ab | Selenium rectifier element and method of manufacturing same |
| US2496432A (en) * | 1946-05-21 | 1950-02-07 | Westinghouse Electric Corp | Selenium rectifier |
| US2647226A (en) * | 1947-09-20 | 1953-07-28 | Asea Ab | Dry rectifier valve plate |
| US2762953A (en) * | 1951-05-15 | 1956-09-11 | Sylvania Electric Prod | Contact rectifiers and methods |
| US2733390A (en) * | 1952-06-25 | 1956-01-31 | scanlon | |
| US2907935A (en) * | 1955-02-26 | 1959-10-06 | Siemens Ag | Junction-type semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB560869A (en) | 1944-04-25 |
| FR932749A (en) | 1948-03-31 |
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