WO1999062113A2 - Verfahren zur herstellung von schottky-dioden - Google Patents
Verfahren zur herstellung von schottky-dioden Download PDFInfo
- Publication number
- WO1999062113A2 WO1999062113A2 PCT/DE1999/001429 DE9901429W WO9962113A2 WO 1999062113 A2 WO1999062113 A2 WO 1999062113A2 DE 9901429 W DE9901429 W DE 9901429W WO 9962113 A2 WO9962113 A2 WO 9962113A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protective ring
- ring material
- schottky
- layer
- schottky diode
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000004065 semiconductor Substances 0.000 claims abstract description 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 230000000873 masking effect Effects 0.000 claims abstract description 9
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 7
- 238000000151 deposition Methods 0.000 claims abstract description 4
- 238000005475 siliconizing Methods 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 238000007740 vapor deposition Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- ZXEYZECDXFPJRJ-UHFFFAOYSA-N $l^{3}-silane;platinum Chemical group [SiH3].[Pt] ZXEYZECDXFPJRJ-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- XRZCZVQJHOCRCR-UHFFFAOYSA-N [Si].[Pt] Chemical compound [Si].[Pt] XRZCZVQJHOCRCR-UHFFFAOYSA-N 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000992 sputter etching Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66083—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by variation of the electric current supplied or the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. two-terminal devices
- H01L29/6609—Diodes
- H01L29/66143—Schottky diodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
- H01L29/872—Schottky diodes
Definitions
- the invention relates to a method for producing Schottky diodes which have a protective ring in the edge region of the Schottky contact.
- the invention further relates to a Schottky diode.
- the invention is based on the object of specifying a method for producing Schottky diodes or a Schottky diode which has typical diameters of 5 to 10 ⁇ m and can be used in high-frequency ranges of typically 77 GHz and above.
- the protective ring is produced by depositing a protective ring material onto the surface of the semiconductor layer previously provided with a structured masking layer and then siliconizing the protective ring material.
- the protective ring material is a metal, in particular a high-barrier metal, which in particular has platinum.
- the protective ring material is expediently applied by vapor deposition or sputtering.
- FIG. 1 shows a semiconductor wafer with a structured oxide layer mask and deposited protective ring material
- FIG. 2 shows a semiconductor wafer according to FIG. 1 after the protective ring material has been siliconized
- FIG 3 shows the semiconductor wafer after the deposition and structuring of the contact metallizations.
- FIG. 1 shows a substrate 1, which usually consists of semiconductor material, with a semiconductor layer 2, which is epitaxially deposited thereon.
- a structured masking layer 3 is deposited on the epitaxially deposited semiconductor layer 2, which represents an approximately 0.5 ⁇ m thick silicon oxide layer and the active surface of the Schottky Diode defined.
- a protective ring material layer 4 is deposited isotropically with a thickness of approximately 0.1 ⁇ m with good edge coverage, which layer 4 consists of a high-barrier metal such as preferably platinum.
- the reference number 5 denotes the axis of symmetry of the rotationally symmetrical Schottky diode.
- the substrate 1 can consist, for example, of n + -doped silicon, while the semiconductor layer 2 can consist of n-doped silicon. However, this choice of material is not mandatory. Substrate 1 and semiconductor layer 2 can also have the mirror-image p-doping or consist of other semiconductor material such as germanium, gallium arsenide or indium phosphide.
- the masking layer 3 can consist of any insulator, in particular of silicon oxide.
- FIG. 2 shows a semiconductor wafer according to FIG. 1, in which the regions of the layer 4 within the epi layer 2 are siliconized, so that platinum silicon sections 6 and 7 are formed.
- a Schottky and contact metallization 12 containing, for example, platinum is deposited and structured.
- An electrode layer 13 deposited on the back of the substrate 1 forms the second connection of the Schottky contact.
- the platinum silicide ring 10 fulfills the requirement of a protective ring for a Schottky diode of the desired application.
- the outer ring 11 has no further function.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99934481A EP1145298A3 (de) | 1998-05-26 | 1999-05-11 | Verfahren zur herstellung von schottky-dioden |
JP2000551431A JP2003514371A (ja) | 1998-05-26 | 1999-05-11 | ショットキーダイオードの製法 |
US09/491,767 US6551911B1 (en) | 1998-05-26 | 2000-01-26 | Method for producing Schottky diodes and Schottky diodes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823482.1 | 1998-05-26 | ||
DE19823482 | 1998-05-26 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/491,767 Continuation US6551911B1 (en) | 1998-05-26 | 2000-01-26 | Method for producing Schottky diodes and Schottky diodes |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999062113A2 true WO1999062113A2 (de) | 1999-12-02 |
WO1999062113A3 WO1999062113A3 (de) | 2002-10-03 |
Family
ID=7868961
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/001429 WO1999062113A2 (de) | 1998-05-26 | 1999-05-11 | Verfahren zur herstellung von schottky-dioden |
Country Status (4)
Country | Link |
---|---|
US (1) | US6551911B1 (de) |
EP (1) | EP1145298A3 (de) |
JP (1) | JP2003514371A (de) |
WO (1) | WO1999062113A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8338906B2 (en) * | 2008-01-30 | 2012-12-25 | Taiwan Semiconductor Manufacturing Co., Ltd. | Schottky device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0368127A2 (de) * | 1988-11-11 | 1990-05-16 | Sanken Electric Co., Ltd. | Hochspannungshalbleiteranordnung mit einer Gleichrichtersperrschicht und Verfahren zur Herstellung |
WO1991004581A1 (en) * | 1989-09-21 | 1991-04-04 | Unisearch Limited | Guard barrier for schottky barrier devices |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4107719A (en) * | 1975-02-19 | 1978-08-15 | Siemens Aktiengesellschaft | Inverse planar transistor |
US4414737A (en) | 1981-01-30 | 1983-11-15 | Tokyo Shibaura Denki Kabushiki Kaisha | Production of Schottky barrier diode |
US4796069A (en) * | 1981-05-13 | 1989-01-03 | International Business Machines Corporation | Schottky diode having limited area self-aligned guard ring and method for making same |
US4691435A (en) * | 1981-05-13 | 1987-09-08 | International Business Machines Corporation | Method for making Schottky diode having limited area self-aligned guard ring |
JPS60157268A (ja) * | 1984-01-26 | 1985-08-17 | Rohm Co Ltd | シヨツトキバリアダイオ−ド |
US4835580A (en) * | 1987-04-30 | 1989-05-30 | Texas Instruments Incorporated | Schottky barrier diode and method |
CA2008176A1 (en) | 1989-01-25 | 1990-07-25 | John W. Palmour | Silicon carbide schottky diode and method of making same |
JP2809826B2 (ja) * | 1990-06-29 | 1998-10-15 | 三菱電機株式会社 | 半導体装置の製造方法 |
EP1090418B1 (de) * | 1998-05-26 | 2008-07-09 | Infineon Technologies AG | Verfahren zur herstellung von schottky-dioden |
US6066884A (en) * | 1999-03-19 | 2000-05-23 | Lucent Technologies Inc. | Schottky diode guard ring structures |
-
1999
- 1999-05-11 EP EP99934481A patent/EP1145298A3/de not_active Withdrawn
- 1999-05-11 JP JP2000551431A patent/JP2003514371A/ja active Pending
- 1999-05-11 WO PCT/DE1999/001429 patent/WO1999062113A2/de not_active Application Discontinuation
-
2000
- 2000-01-26 US US09/491,767 patent/US6551911B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0368127A2 (de) * | 1988-11-11 | 1990-05-16 | Sanken Electric Co., Ltd. | Hochspannungshalbleiteranordnung mit einer Gleichrichtersperrschicht und Verfahren zur Herstellung |
WO1991004581A1 (en) * | 1989-09-21 | 1991-04-04 | Unisearch Limited | Guard barrier for schottky barrier devices |
Non-Patent Citations (2)
Title |
---|
"METHOD TO FORM RECESSED OXIDE-DEFINED HIGH-BARRIER AND LOW-BARRIER SCHOTTKY DIODES" IBM TECHNICAL DISCLOSURE BULLETIN, Bd. 31, Nr. 6, 1. November 1988 (1988-11-01), Seiten 478-481, XP000097100 ISSN: 0018-8689 * |
PATENT ABSTRACTS OF JAPAN vol. 9, no. 325 (E-368) [2048], 20. Dezember 1985 (1985-12-20) & JP 60 157268 A (ROOMU K.K.), 17. August 1985 (1985-08-17) * |
Also Published As
Publication number | Publication date |
---|---|
EP1145298A3 (de) | 2002-11-20 |
JP2003514371A (ja) | 2003-04-15 |
WO1999062113A3 (de) | 2002-10-03 |
US6551911B1 (en) | 2003-04-22 |
EP1145298A2 (de) | 2001-10-17 |
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