US2479301A - Selenium rectifier - Google Patents
Selenium rectifier Download PDFInfo
- Publication number
- US2479301A US2479301A US788948A US78894847A US2479301A US 2479301 A US2479301 A US 2479301A US 788948 A US788948 A US 788948A US 78894847 A US78894847 A US 78894847A US 2479301 A US2479301 A US 2479301A
- Authority
- US
- United States
- Prior art keywords
- thallous
- layer
- seienium
- selenium
- rectifier
- 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
Images
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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/06—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. 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
- H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
- H01L21/101—Application of the selenium or tellurium to the foundation plate
-
- 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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
-
- 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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02623—Liquid deposition
- H01L21/02625—Liquid deposition using melted materials
-
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/06—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. 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
- H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
- H01L21/105—Treatment of the surface of the selenium or tellurium layer after having been made conductive
-
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/06—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. 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
- H01L21/10—Preliminary treatment of the selenium or tellurium, its application to the foundation plate, or the subsequent treatment of the combination
- H01L21/108—Provision of discrete insulating layers, i.e. non-genetic barrier layers
Definitions
- Our invention relates to dry-contact rectiflers or light-sensitive devices and particularly to devices of this type which employ a layer of selemum.
- One object of our invention is to provide a selenum rectifier or light-sensitive device in which the surface of the seienium at which the rectificaton or photo-electric eflect is produced is provided with -a boundary layer which insures a high resistance to current flow in the nominally non-conductive direction when an alternating voltage is impressed upon it.
- a boundary layer which insures a high resistance to current flow in the nominally non-conductive direction when an alternating voltage is impressed upon it.
- a blocking layer may be referred to as a blocking layer.
- Another object of our inventiou is to produce v on a selenium layer a blocking layer which has a high resistance to current flow in the nominally non-conductive direction but which does not introduce a high resistance to current flow in the nominally conductive direction.
- Another object of our invention is to provide a seienium layer with a blocking layer which shall not undergo such chemical reaction during the practical use of the device incorporating it that the latter will change its electrical characteristics, or as it is sometimes termed will "ag at a deleterious rate in service.
- the rectifler comprises a base-plate I which may comprise steel which has first been sand-blasted on the surface 'and thereaiter nickel-plated.
- the plate I thus prepared is preferably provided with a central hole 2 by which it may be mounted upon a spindle provided with means for rapidly rotating it.
- the plate and spindle while in rotation are dipped into molten seienium and then withdrawn therefrom.
- the centrifugal force removes all of the seienium except a thin uniform layer 3 from the surface of the plate.
- the coated base plate is then submerged in a .01 normal water solution of thallous hydroxide at about C.
- the 'plates are removed in about 20 seconds and rinsed in distilled water at room temperature.
- the method of producing an electrical surface element which comprises producing a surface of seienium and immersing it in a water solution of 0.01 normal concentration of thallous hydroxide at about 25 C.
- An electrical circuit element comprising a base-plate having a portion of its surface coated with seienium, the surface of said seienium being coated with thallous selenid and the surface oi' said thallous selenide being provided with a cadmium counter-electrode.
- a rectifler comprising a base-plate having a layer of selenium thereon which is provided with a coating of thallous selenide, the surface of said thallous selenide being provided with a cadnium contact layer.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE485774D BE485774A (de) | 1947-11-29 | ||
US788948A US2479301A (en) | 1947-11-29 | 1947-11-29 | Selenium rectifier |
GB29241/48A GB648038A (en) | 1947-11-29 | 1948-11-10 | Improvements in or relating to electrical circuit elements, such as dry-contact rectifiers or light-sensitive devices |
FR975527D FR975527A (fr) | 1947-11-29 | 1948-11-27 | Redresseurs au sélénium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US788948A US2479301A (en) | 1947-11-29 | 1947-11-29 | Selenium rectifier |
Publications (1)
Publication Number | Publication Date |
---|---|
US2479301A true US2479301A (en) | 1949-08-16 |
Family
ID=25146090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US788948A Expired - Lifetime US2479301A (en) | 1947-11-29 | 1947-11-29 | Selenium rectifier |
Country Status (4)
Country | Link |
---|---|
US (1) | US2479301A (de) |
BE (1) | BE485774A (de) |
FR (1) | FR975527A (de) |
GB (1) | GB648038A (de) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2629039A (en) * | 1950-06-07 | 1953-02-17 | Weston Electrical Instr Corp | Selenium cell and process for manufacturing the same |
US2643277A (en) * | 1949-09-16 | 1953-06-23 | Erwin E Falkenthal | Photovoltaic cell |
US2811653A (en) * | 1953-05-22 | 1957-10-29 | Rca Corp | Semiconductor devices |
US2858239A (en) * | 1956-03-13 | 1958-10-28 | Siemens Ag | Method for producing selenium rectifiers |
US2908592A (en) * | 1939-01-22 | 1959-10-13 | Int Standard Electric Corp | Method of producing a selenium rectifier |
DE973817C (de) * | 1951-03-05 | 1960-06-15 | Licentia Gmbh | Verfahren zur Herstellung eines Trockengleichrichters |
DE1101625B (de) * | 1955-02-07 | 1961-03-09 | Licentia Gmbh | Verfahren zum Herstellen von Selengleichrichtern |
DE1186555B (de) * | 1962-04-07 | 1965-02-04 | Licentia Gmbh | Verfahren zur Herstellung von Selengleichrichtern mit hoher Sperrfaehigkeit |
DE1206529B (de) * | 1962-04-13 | 1965-12-09 | Licentia Gmbh | Verfahren zur Herstellung von Selengleichrichtern hoher Sperrfaehigkeit |
DE1219591B (de) * | 1962-04-07 | 1966-06-23 | Licentia Gmbh | Verfahren zum Aufbringen einer gleichmaesigen Thalliumselenidschicht auf die Selenschicht eines Gleichrichters |
US3599058A (en) * | 1968-04-26 | 1971-08-10 | Siemens Ag | Selenium rectifier plate for use as an overvoltage diverter |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2309558A (en) * | 1996-01-26 | 1997-07-30 | Ibm | Load balancing across the processors of a server computer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2361157A (en) * | 1942-03-17 | 1944-10-24 | Union Switch & Signal Co | Alternating electric current rectifier of the selenium type |
-
0
- BE BE485774D patent/BE485774A/xx unknown
-
1947
- 1947-11-29 US US788948A patent/US2479301A/en not_active Expired - Lifetime
-
1948
- 1948-11-10 GB GB29241/48A patent/GB648038A/en not_active Expired
- 1948-11-27 FR FR975527D patent/FR975527A/fr not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2361157A (en) * | 1942-03-17 | 1944-10-24 | Union Switch & Signal Co | Alternating electric current rectifier of the selenium type |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2908592A (en) * | 1939-01-22 | 1959-10-13 | Int Standard Electric Corp | Method of producing a selenium rectifier |
US2643277A (en) * | 1949-09-16 | 1953-06-23 | Erwin E Falkenthal | Photovoltaic cell |
US2629039A (en) * | 1950-06-07 | 1953-02-17 | Weston Electrical Instr Corp | Selenium cell and process for manufacturing the same |
DE973817C (de) * | 1951-03-05 | 1960-06-15 | Licentia Gmbh | Verfahren zur Herstellung eines Trockengleichrichters |
US2811653A (en) * | 1953-05-22 | 1957-10-29 | Rca Corp | Semiconductor devices |
DE1101625B (de) * | 1955-02-07 | 1961-03-09 | Licentia Gmbh | Verfahren zum Herstellen von Selengleichrichtern |
US2858239A (en) * | 1956-03-13 | 1958-10-28 | Siemens Ag | Method for producing selenium rectifiers |
DE1186555B (de) * | 1962-04-07 | 1965-02-04 | Licentia Gmbh | Verfahren zur Herstellung von Selengleichrichtern mit hoher Sperrfaehigkeit |
DE1219591B (de) * | 1962-04-07 | 1966-06-23 | Licentia Gmbh | Verfahren zum Aufbringen einer gleichmaesigen Thalliumselenidschicht auf die Selenschicht eines Gleichrichters |
DE1206529B (de) * | 1962-04-13 | 1965-12-09 | Licentia Gmbh | Verfahren zur Herstellung von Selengleichrichtern hoher Sperrfaehigkeit |
DE1280417B (de) * | 1962-04-13 | 1968-10-17 | Licentia Gmbh | Verfahren zur Herstellung von Selengleichrichtern hoher Sperrfaehigkeit |
US3599058A (en) * | 1968-04-26 | 1971-08-10 | Siemens Ag | Selenium rectifier plate for use as an overvoltage diverter |
Also Published As
Publication number | Publication date |
---|---|
GB648038A (en) | 1950-12-28 |
FR975527A (fr) | 1951-03-06 |
BE485774A (de) | 1900-01-01 |
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