US2502540A - Method of manufacturing blockinglayer cells of the selenium type - Google Patents
Method of manufacturing blockinglayer cells of the selenium type Download PDFInfo
- Publication number
- US2502540A US2502540A US617917A US61791745A US2502540A US 2502540 A US2502540 A US 2502540A US 617917 A US617917 A US 617917A US 61791745 A US61791745 A US 61791745A US 2502540 A US2502540 A US 2502540A
- Authority
- US
- United States
- Prior art keywords
- blocking layer
- selenium
- electrode
- manufacturing
- cells
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 title description 18
- 229910052711 selenium Inorganic materials 0.000 title description 18
- 239000011669 selenium Substances 0.000 title description 18
- 230000000903 blocking effect Effects 0.000 claims description 22
- 239000004922 lacquer Substances 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 239000004793 Polystyrene Substances 0.000 description 12
- 229920002223 polystyrene Polymers 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000905957 Channa melasoma Species 0.000 description 1
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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 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
- H01L21/14—Treatment of the complete device, e.g. by electroforming to form a barrier
- H01L21/145—Ageing
Definitions
- This invention relates to a method ot manufacturing blocking-layer cells of the selenium type, particularly measuring rectumblers, in which a carrier plate has mounted on it a semi-conductive and a good conducting electrode.
- the semi-conductive electrode may be made for example of selenium, the good conducting one oi gold.
- the two electrodes are .generally assumed to be separated by a blocking layer. It has been suggested before to mount a lacquer nm upon such a cell after the good conducting electrode is placed inposition, inter alia in order to protect this electrode from the action of the ⁇ metal by means of which the current supply conductor was secured to the counter electrode as shown in my copending United States application, Ser. No. 617,578, now lPatent No. 2,446,254, issued August 3, 1948.
- heating is carried out at 170 C. for half an hour. Neither the temperature nor thev duration of the treatmentare, however, critical.
- Fig. 1 is a ⁇ curve illustrating the voltage-current relationships in two cells, one of which is provided with 'a baked lacquer coating.
- Fig. 2 is a curve illustratingv on a logarithmic scale the voltage-current relationship in two cells, in the region of low voltages, oneof the cells being provided with a bakedrlacquer coating, and
- Fig. 3 illustrates one embodiment of a blocking layer cell which has been provided ⁇ with la lacquer coating which has been baked in airv at an elevatedv temperature.
- a blocking layer cell constructed in accordance with the invention ⁇ is illustrated.
- a carrier plate I0 of galvanized aluminum is coated with a film of carbon which for the sake of clarity in the drawing is not shown.
- a layer oi' selenium II is applied to the carrier plate by casting after which the selenium is converted into the semi-conducting modification by a heat treatment in a heated press. .
- a blocking layer is then formed on the selenium layer which is extremely thin and is not illustrated in the drawing.
- gold electrode I2 having a diameter preferably between 1 and 3 mms. is applied to the selenium layer II by atomization of the gold after which the electrode assembly is sprayed with a solution of polystyrene.
- the polystyrene coating is baked in air at a temperature up to about for ⁇ half an hour forming a solid coating of'polystyrene I3 around the electrode assembly.
- the supply conductor I5 is secured to a metallic contact Il whichV has been applied to the. polystyrene layer I3 for making electrical contact to the gold electrode I2.
- the layer of polystyrene has been greatly exaggerated, and it will be clearly understood that in the actual construction of the cell the thickness of the polystyrene lm is exceedingly thin.
- Fig. .l VIn the right-hand half of Fig. .l is plotted the forward current relatively to the voltage applied.
- the curve A relates to the properties of a cell which has not been subjected to heating
- the curve B relates to a cell made by the method of the invention.
- the return current is plotted in the left-hand half of Fig. 1, the scale being,
- Fig. 2 shows again the right-hand half of Fig. l, the currents being now plottedv on a logarithmic scale. It is obvious how the initial values are much higher with the curve B than with the curve A. It is this region which matters particularly with measuring rectiiiers.
- a blocking layer cell comprising the steps of forming a semiconductive electrode on a base, forming a blocking layer on said semi-conductive electrode, torming a conductive electrode on said blocking layer,
- a blocking layer cell comprising the steps of forming a layer of selenium on a base, converting the selenium to a semi-conductive modification thereof, forming a blocking layer on said selenium layer, forming a conductive electrode on said blocking layer, applying a coating of polystyrene to the electrode assembly, and baking the polystyrene in air at a temperature of between approximately 100 to 200 C. until the polystyrene has dried.
- the method of manufacturing a blocking layer cell comprising the steps of, forming a layer of selenium on a base, converting the selenium to a semi-conductive modication thereof, forming a blocking layer on said selenium layer. form- 4 ing a conductive electrode on ma blocking layer, applying a coating of polystyrene to the electrode assembly, and baking the polystyrene coating in air at a temperature of approximately 170 C. for approximately one half hour.
- a blocking layer cell comprising a carrier plate. a semi-conductive electrode on said carrier plate, a blocking layer on said semi-conductive electrode, a conductive electrode on said blocking layer, and a coating of baked lacquer covering the electrode assembly.
- a blocking layer cell comprising a carrier plate. a layer of selenium on said carrier plate, a blocking layer on said selenium layer, a conductive electrode of smaller cross-section than said selenium layer on said blocking layer, and a coating of baked polystyrene covering the electrode assembly.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Gerontology & Geriatric Medicine (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Hybrid Cells (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL109900A NL84017C (pl) | 1943-02-22 | 1943-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2502540A true US2502540A (en) | 1950-04-04 |
Family
ID=19780496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US617917A Expired - Lifetime US2502540A (en) | 1943-02-22 | 1945-09-21 | Method of manufacturing blockinglayer cells of the selenium type |
Country Status (7)
Country | Link |
---|---|
US (1) | US2502540A (pl) |
BE (1) | BE454478A (pl) |
CH (1) | CH240309A (pl) |
DE (1) | DE849460C (pl) |
FR (1) | FR902072A (pl) |
GB (1) | GB633346A (pl) |
NL (1) | NL84017C (pl) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2807558A (en) * | 1954-04-12 | 1957-09-24 | Rca Corp | Method of sealing a semi-conductor device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE974915C (de) * | 1953-05-02 | 1961-05-31 | Standard Elek K Lorenz Ag | Verfahren zur Herstellung von Selengleichrichtern mit einer Lackschicht zwischen Selen und Deckelektrode zur Verwendung fuer Regelzwecke |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1932067A (en) * | 1928-12-05 | 1933-10-24 | Westinghouse Electric & Mfg Co | Process of producing well-conducting electric connections between a layer of a metalcompound and a coating of a ductile metal applied to it |
US2134131A (en) * | 1935-12-03 | 1938-10-25 | Suddentsche App Fabrik G M B H | Electric rectifier |
US2182377A (en) * | 1937-05-01 | 1939-12-05 | Radio Patents Corp | Method and means for tuning electric oscillatory circuits |
US2345122A (en) * | 1939-10-17 | 1944-03-28 | Herrmann Heinrich | Dry rectifier |
US2419602A (en) * | 1943-08-14 | 1947-04-29 | Standard Telephones Cables Ltd | Rectifier and method of making the same |
-
1943
- 1943-02-22 NL NL109900A patent/NL84017C/nl active
-
1944
- 1944-02-19 DE DEN2234D patent/DE849460C/de not_active Expired
- 1944-02-19 CH CH240309D patent/CH240309A/de unknown
- 1944-02-21 FR FR902072D patent/FR902072A/fr not_active Expired
- 1944-02-21 BE BE454478A patent/BE454478A/fr unknown
-
1945
- 1945-09-21 US US617917A patent/US2502540A/en not_active Expired - Lifetime
-
1946
- 1946-08-30 GB GB26160/46A patent/GB633346A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1932067A (en) * | 1928-12-05 | 1933-10-24 | Westinghouse Electric & Mfg Co | Process of producing well-conducting electric connections between a layer of a metalcompound and a coating of a ductile metal applied to it |
US2134131A (en) * | 1935-12-03 | 1938-10-25 | Suddentsche App Fabrik G M B H | Electric rectifier |
US2182377A (en) * | 1937-05-01 | 1939-12-05 | Radio Patents Corp | Method and means for tuning electric oscillatory circuits |
US2345122A (en) * | 1939-10-17 | 1944-03-28 | Herrmann Heinrich | Dry rectifier |
US2419602A (en) * | 1943-08-14 | 1947-04-29 | Standard Telephones Cables Ltd | Rectifier and method of making the same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2807558A (en) * | 1954-04-12 | 1957-09-24 | Rca Corp | Method of sealing a semi-conductor device |
Also Published As
Publication number | Publication date |
---|---|
DE849460C (de) | 1952-09-15 |
NL84017C (pl) | 1957-02-15 |
FR902072A (fr) | 1945-08-17 |
GB633346A (en) | 1949-12-12 |
CH240309A (de) | 1945-12-15 |
BE454478A (fr) | 1944-03-31 |
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