Patent US3271208A successfully refreshed from Google Patents.
US3271208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Producing an n+n junction using antimony
Assignee: Merck and Co Inc
•
Filing: 1960-12-29
•
Granted: 1966-09-06
•
Expires: 1980-12-29
Abstract
No abstract record available.
Inventors
- 👤 John E Allegretti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:00
CPC Classifications
C; C30; C30B; C30B29/00; C30B29/02; C30B29/06; C30B25/00; C30B25/02; H; H10; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; Y; Y10; Y10S; Y10S148/00; Y10S148/007; Y10S148/115
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A METHOD OF FORMING BY VAPOR DEPOSITION AN N+N SINGLE CRYSTAL SILICON SEMICONDUCTOR BODY INCLUDING A SUBSTRATE LAYER OF SINGLE CRYSTAL SILICON SEMICONDUCTOR MATERIAL OF N-CONDUCTIVITY TYPE HAVING A RESISTIVITY UP TO AND INCLUDING 0.05 OHM-CM. AND A VAPOR-DEPOSITED SINGLE CRYSTAL SILICON SEMICONDUCTOR LAYER OF N-CONDUCTIVITY TYPE HAVING A RESISTIVITY OF AT LEAST 1 OHM-CM. THEREON, WITH AN ABRUPT TRANSITION REGION THEREBETWEEN, COMPRISING THE STEPS OF: (A) PROVIDING WITHIN A REACTION CHAMBER A SINGLE CRYSTAL SILICON SEMICONDUCTOR SUBSTRATE WAFER OF NCONDUCTIVITY TYPE DOPED WITH ANTIMONY AS AN IMPURITY ELEMENT TO A RESISTIVITY LEVEL UP TO AND INCLUDING 0.05 OHM-CM., (B) HEATING SAID THUS-DOPED WAFER TO A DEPOSITION TEMPERATURE, (C) INTRODUCING INTO SAID CHAMBER A DECOMPOSABLE VAPOR INCLUDING A HALOGEN-CONTAINING SOURCE COMPOUND OF SILICON SEMICONDUCTOR ATOMS, AND N-CONDUCTIVITY TYPE ACTIVE IMPURITY ATOMS THEREWITH TO IMPART A PREDETERMINED HIGH RESISTIVITY OF AT LEAST 1 OHM-CM. TO SAID SEMICONDUCTOR ATOMS, AND (D) CONTACTING SAID HEATED WAFER WITH SAID VAPOR THEREBY TO FORM A SINGLE CRYSTAL N-CONDUCTIVITY TYPE SILICIN LAYER ON SAID LOW RESISTIVITY LAYER HAVING A RESISTIVITY CORRESPONDING TO SAID IMPURITY ATOMS AT SAID VAPOR, AND AN ABRUPT TRANSITION REGION BETWEEN SAID LOWE RESISTIVITY SUBSTRATE AND SAID HIGH RESISTIVITY VAPOR-DEPOSITED LAYER.
Claim 2
Independent Claim
198 words
A METHOD OF FORMING BY VAPOR DEPOSITION AN N+N SINGLE CRYSTAL SILICON SEMICONDUCTOR BODY INCLUDING A SUBSTRATE LAYER OF SINGLE CRYSTAL SILICON SEMICONDUCTOR MATERIAL OF N-CONDUCTIVITY TYPE HAVING A RESISTIVITY UP TO AND INCLUDING 0.05 OHM-CM. AND A VAPOR-DEPOSITED SINGLE CRYSTAL SILICON SEMICONDUCTOR LAYER OF N-CONDUCTIVITY TYPE HAVING A RESISTIVITY OF AT LEAST 1 OHM-CM. THEREON, WITH AN ABRUPT TRANSITION REGION THEREBETWEEN, COMPRISING THE STEPS OF: (A) PROVIDING WITHIN A REACTION CHAMBER A SINGLE CRYSTAL SILICON SEMICONDUCTOR SUBSTRATE WAFER OF NCONDUCTIVITY TYPE DOPED WITH ANTIMONY AS AN IMPURITY ELEMENT TO A RESISTIVITY LEVEL UP TO AND INCLUDING 0.05 OHM-CM., (B) HEATING SAID THUS-DOPED WAFER TO A DEPOSITION TEMPERATURE, (C) INTRODUCING INTO SAID CHAMBER A DECOMPOSABLE VAPOR INCLUDING A HALOGEN-CONTAINING SOURCE COMPOUND OF SILICON SEMICONDUCTOR ATOMS, AND N-CONDUCTIVITY TYPE ACTIVE IMPURITY ATOMS THEREWITH TO IMPART A PREDETERMINED HIGH RESISTIVITY OF AT LEAST 1 OHM-CM. TO SAID SEMICONDUCTOR ATOMS, AND (D) CONTACTING SAID HEATED WAFER WITH SAID VAPOR THEREBY TO FORM A SINGLE CRYSTAL N-CONDUCTIVITY TYPE SILICIN LAYER ON SAID LOW RESISTIVITY LAYER HAVING A RESISTIVITY CORRESPONDING TO SAID IMPURITY ATOMS AT SAID VAPOR, AND AN ABRUPT TRANSITION REGION BETWEEN SAID LOWE RESISTIVITY SUBSTRATE AND SAID HIGH RESISTIVITY VAPOR-DEPOSITED LAYER.
References Cited (Backward Citations)
US2692839A
Cited
US2763581A
Cited
US2910394A
Cited
US2931958A
Cited
US2895858A
Cited
DE1029941B
Cited
US3046459A
Cited
US3131098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |