GB639476A - Improvements in electric wave translating devices - Google Patents
Improvements in electric wave translating devicesInfo
- Publication number
- GB639476A GB639476A GB21763/47A GB2176347A GB639476A GB 639476 A GB639476 A GB 639476A GB 21763/47 A GB21763/47 A GB 21763/47A GB 2176347 A GB2176347 A GB 2176347A GB 639476 A GB639476 A GB 639476A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wafer
- silicon
- electric wave
- translating devices
- crust
- 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
-
- H10P95/00—
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D99/00—Subject matter not provided for in other groups of this subclass
-
- H10P14/6309—
-
- H10P14/6322—
-
- H10P32/141—
-
- H10P32/171—
-
- H10P52/00—
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
A silicon wafer for a crystal detector [see Group XL (c)] is cut from a block of high purity crystallized silicon, the upper surface is optically finished, the wafer is heated in an oxydising atmosphere in a furnace maintained at 1050 DEG C. until, e.g. after four hours, an upper crust of silicon dioxide is formed. The crust is dissolved in hydrofluoric acid to expose a thin layer of chemically pure silicon which is integral with the wafer and which has the desired electrical properties. Specifications 577,181, 578,116, 581,130, 590,458 and 594,394 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US530419A US2437269A (en) | 1944-04-10 | 1944-04-10 | Translating device and method of making it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB639476A true GB639476A (en) | 1950-06-28 |
Family
ID=24113578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB21763/47A Expired GB639476A (en) | 1944-04-10 | 1947-08-07 | Improvements in electric wave translating devices |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2437269A (en) |
| BE (1) | BE476053A (en) |
| CH (1) | CH266759A (en) |
| FR (1) | FR950513A (en) |
| GB (1) | GB639476A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1058634B (en) * | 1956-06-07 | 1959-06-04 | Ibm Deutschland | Gas diffusion process for manufacturing a transistor |
| DE1095401B (en) * | 1958-04-16 | 1960-12-22 | Standard Elektrik Lorenz Ag | Method for diffusing foreign matter into a semiconductor body for the production of an electrical semiconductor device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL70486C (en) * | 1945-12-29 | |||
| NL82014C (en) * | 1949-11-30 | |||
| BE536181A (en) * | 1954-03-03 | |||
| US2935453A (en) * | 1957-04-11 | 1960-05-03 | Sylvania Electric Prod | Manufacture of semiconductive translating devices |
| NL235544A (en) * | 1958-01-28 |
-
0
- BE BE476053D patent/BE476053A/xx unknown
-
1944
- 1944-04-10 US US530419A patent/US2437269A/en not_active Expired - Lifetime
-
1947
- 1947-07-29 CH CH266759D patent/CH266759A/en unknown
- 1947-07-30 FR FR950513D patent/FR950513A/en not_active Expired
- 1947-08-07 GB GB21763/47A patent/GB639476A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1058634B (en) * | 1956-06-07 | 1959-06-04 | Ibm Deutschland | Gas diffusion process for manufacturing a transistor |
| DE1095401B (en) * | 1958-04-16 | 1960-12-22 | Standard Elektrik Lorenz Ag | Method for diffusing foreign matter into a semiconductor body for the production of an electrical semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| US2437269A (en) | 1948-03-09 |
| FR950513A (en) | 1949-09-29 |
| BE476053A (en) | |
| CH266759A (en) | 1950-02-15 |
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