WO2001063677A1 - Transistor mos pour circuits a haute densite d'integration - Google Patents
Transistor mos pour circuits a haute densite d'integration Download PDFInfo
- Publication number
- WO2001063677A1 WO2001063677A1 PCT/FR2001/000532 FR0100532W WO0163677A1 WO 2001063677 A1 WO2001063677 A1 WO 2001063677A1 FR 0100532 W FR0100532 W FR 0100532W WO 0163677 A1 WO0163677 A1 WO 0163677A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mos transistor
- source
- drain
- thin layer
- silicon
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/67—Thin-film transistors [TFT]
- H10D30/674—Thin-film transistors [TFT] characterised by the active materials
- H10D30/6741—Group IV materials, e.g. germanium or silicon carbide
- H10D30/6743—Silicon
- H10D30/6744—Monocrystalline silicon
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/64—Electrodes comprising a Schottky barrier to a semiconductor
- H10D64/647—Schottky drain or source electrodes for IGFETs
Definitions
- the present invention relates to a MOS transistor usable for producing circuits with high integration density.
- Figure 1 shows, schematically, the structure of a conventional MOS transistor. It is an n-channel MOS transistor. It is produced on a solid substrate 1 of p-type silicon. Two n + type regions 2 and 3 are created, for example by ion implantation, to respectively form the source and the drain of the transistor.
- the reference 4 designates the gate oxide layer produced on the surface of the substrate 1 and under which the regions 2 and 3 extend beyond.
- a gate electrode 5 is deposited on the gate oxide layer 4.
- Source electrodes 6 and drain 7 are made respectively on regions 2 and 3 and the transistor is isolated from adjacent devices by an oxide layer 8.
- the channel 9 which forms under the gate oxide layer 4 when the transistor is suitably polarized. The figure shows the following important parameters:
- the technological obstacles which prevent the realization of a conventional MOS transistor with a gate length of 22 nm are notably the following: - I: a very shallow depth of the source and drain extensions at their junction with the channel (from 8 to 13 nm);
- the device described in this article is a quantum wire on undoped silicon, which implies a very reduced device width. This very small width is essential for the operation of the SET transistor in order to reduce the set of capacities between the terminal contacts of the transistor and the silicon channel, Coulomb blocking being obtainable only at the cost of very low capacities.
- the very small width of the device makes it possible to obtain a fairly large tunnel resistance of the junctions since the resistance is inversely proportional to the emission surface.
- the present invention makes it possible to remedy the problems of producing MOS transistors for circuits with high integration density. It relates to an MOS transistor produced in the thin silicon layer of an SOI substrate, said thin layer being lightly doped and having a thickness of less than 30 nm, the source and drain contacts being of the Schottky type at barrier height. Schottky " as low as possible for primary carriers, the operating mode of the transistor being of the accumulation type.
- the doping rate of the thin layer is between 5. 10 14 cm “3 and 10 17 cm “ 3 .
- it is of the order of 10 15 cm “3 , for example 1 or 2. 10 15 cm “ 3 .
- the source and drain contacts are advantageously constituted by a PtGeSi silicide. Annealing, for example at a temperature of the order of 600 ° C. for approximately 10 minutes, makes it possible to lower the height of the Schottky barrier of these contacts.
- the source and drain contacts can be formed by an erbium-based silicide.
- FIG. 2 schematically represents the structure of an MOS transistor according to the present invention.
- This transistor is produced on an SOI substrate 10 formed of a silicon wafer 11 successively covered with a layer of silicon dioxide 12 and a thin layer of silicon 13.
- the thin layer 13, or active layer has a thickness less than 30 nm, typically between 5 and 20 nm.
- This layer is lightly doped, for example of the order of 10 15 cm 3.
- the doping is of type n for an n-MOSFET and of type p for a p-MOSFET.
- the transistor comprises source contacts 14 and drain 15 of the Schottky type and a gate 16 electrically isolated from the rest of the structure by a layer of gate insulator 17, for example made of silicon dioxide.
- the operating principle is that of an MOS transistor with accumulation.
- the channel are the majority carriers of the substrate, that is to say the holes for a p-MOS transistor on SOI p-type substrate and the electrons for an n-MOS transistor on SOI n-type substrate.
- the conduction channel which is established between the source and drain contacts is controlled by the voltage applied to the grid. conduction by a negative gate voltage with respect to the source voltage for a p-MOS type transistor and for a positive gate voltage with respect to the source voltage for an n-MOS type transistor.
- the Schottky barrier height should be as low as possible for majority carriers and ideally equal to 0 eV.
- the thickness of silicide and the corresponding consumption of silicon during the siliciding reaction is not limited, this makes it possible to counter technological obstacles III, IV and V.
- the source and drain contacts can be obtained in the following manner.
- a germanium deposition is carried out by evaporation under ultra-vacuum.
- a platinum deposit is then made by the same process.
- Annealing is then carried out at around 600 ° C. for a typical period of 10 minutes.
- the contacts obtained have a very low barrier height
- the source and drain Schottky contacts can be made before the grid is formed. Alternatively, it is possible to first make the gate oxide and then deposit the gate material. The grid and the self-aligned channel are then defined by etching. The deposition of the source and drain contacts takes place only later by self-alignment after a siliciding reaction.
Landscapes
- Thin Film Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2001237483A AU2001237483A1 (en) | 2000-02-23 | 2001-02-23 | Mos transistor for high density integration circuits |
| CA002399115A CA2399115C (fr) | 2000-02-23 | 2001-02-23 | Transistor mos pour circuits a haute densite d'integration |
| EP01909882A EP1258042A1 (fr) | 2000-02-23 | 2001-02-23 | Transistor mos pour circuits a haute densite d'integration |
| JP2001562764A JP5090601B2 (ja) | 2000-02-23 | 2001-02-23 | 高密度集積回路用mosトランジスタ |
| US10/204,530 US6774451B2 (en) | 2000-02-23 | 2001-02-23 | Mos transistor for high density integration circuits |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0002237A FR2805395B1 (fr) | 2000-02-23 | 2000-02-23 | Transistor mos pour circuits a haute densite d'integration |
| FR00/02237 | 2000-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2001063677A1 true WO2001063677A1 (fr) | 2001-08-30 |
Family
ID=8847291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2001/000532 Ceased WO2001063677A1 (fr) | 2000-02-23 | 2001-02-23 | Transistor mos pour circuits a haute densite d'integration |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6774451B2 (fr) |
| EP (1) | EP1258042A1 (fr) |
| JP (1) | JP5090601B2 (fr) |
| AU (1) | AU2001237483A1 (fr) |
| CA (1) | CA2399115C (fr) |
| FR (1) | FR2805395B1 (fr) |
| WO (1) | WO2001063677A1 (fr) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004327777A (ja) * | 2003-04-25 | 2004-11-18 | Fujitsu Ltd | ショットキーソース・ドレイン構造を有する電界効果トランジスタの製造方法 |
| US10833199B2 (en) | 2016-11-18 | 2020-11-10 | Acorn Semi, Llc | Nanowire transistor with source and drain induced by electrical contacts with negative Schottky barrier height |
| US10872964B2 (en) | 2016-06-17 | 2020-12-22 | Acorn Semi, Llc | MIS contact structure with metal oxide conductor |
| US10879366B2 (en) | 2011-11-23 | 2020-12-29 | Acorn Semi, Llc | Metal contacts to group IV semiconductors by inserting interfacial atomic monolayers |
| US10937880B2 (en) | 2002-08-12 | 2021-03-02 | Acorn Semi, Llc | Method for depinning the Fermi level of a semiconductor at an electrical junction and devices incorporating such junctions |
| US11043571B2 (en) | 2002-08-12 | 2021-06-22 | Acorn Semi, Llc | Insulated gate field effect transistor having passivated schottky barriers to the channel |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9917158B2 (en) * | 2013-07-30 | 2018-03-13 | Samsung Electronics Co., Ltd. | Device contact structures including heterojunctions for low contact resistance |
| US9685509B2 (en) | 2013-07-30 | 2017-06-20 | Samsung Electronics Co., Ltd. | Finfet devices including high mobility channel materials with materials of graded composition in recessed source/drain regions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0456059A1 (fr) * | 1990-04-27 | 1991-11-13 | Nec Corporation | Transistor film mince avec barrière Schottky |
| EP0469611A1 (fr) * | 1990-08-03 | 1992-02-05 | Hitachi, Ltd. | Dispositif à semi-conducteur à injection tunnel et son procédé de fabrication |
| US5140381A (en) * | 1990-03-22 | 1992-08-18 | France Telecom-Etablissement Autonome De Droit Public(Centre National D'etudes Des Telecommunications) | Optical detection device with variable detection threshold |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4665414A (en) * | 1982-07-23 | 1987-05-12 | American Telephone And Telegraph Company, At&T Bell Laboratories | Schottky-barrier MOS devices |
| US4638551A (en) * | 1982-09-24 | 1987-01-27 | General Instrument Corporation | Schottky barrier device and method of manufacture |
| JPH0656883B2 (ja) * | 1986-03-03 | 1994-07-27 | 鐘淵化学工業株式会社 | 半導体装置 |
| US4696093A (en) * | 1986-06-09 | 1987-09-29 | Welch James D | Fabrication of Schottky barrier MOSFETS |
| JPS6370576A (ja) * | 1986-09-12 | 1988-03-30 | Komatsu Ltd | 薄膜トランジスタおよびその製造方法 |
| JP2751658B2 (ja) * | 1990-04-27 | 1998-05-18 | 日本電気株式会社 | 半導体装置 |
| US5407837A (en) * | 1992-08-31 | 1995-04-18 | Texas Instruments Incorporated | Method of making a thin film transistor |
| JPH06177366A (ja) * | 1992-12-04 | 1994-06-24 | Nikon Corp | ショットキーダイオードの製造方法 |
| US5663584A (en) * | 1994-05-31 | 1997-09-02 | Welch; James D. | Schottky barrier MOSFET systems and fabrication thereof |
| JP2630279B2 (ja) * | 1994-10-12 | 1997-07-16 | 日本電気株式会社 | ショットキー型光検出器およびその駆動方法 |
| JPH08115914A (ja) * | 1994-10-14 | 1996-05-07 | Hitachi Ltd | 半導体装置 |
| JP3614231B2 (ja) * | 1995-02-17 | 2005-01-26 | 株式会社ルネサステクノロジ | 半導体記憶素子および半導体記憶装置 |
| JP2760345B2 (ja) * | 1996-06-25 | 1998-05-28 | 日本電気株式会社 | 単一電子素子 |
| JP3217015B2 (ja) * | 1996-07-18 | 2001-10-09 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 電界効果トランジスタの形成方法 |
| JP3003633B2 (ja) * | 1997-07-09 | 2000-01-31 | 日本電気株式会社 | 電界効果型トランジスタ及びその製造方法 |
| US6303479B1 (en) * | 1999-12-16 | 2001-10-16 | Spinnaker Semiconductor, Inc. | Method of manufacturing a short-channel FET with Schottky-barrier source and drain contacts |
-
2000
- 2000-02-23 FR FR0002237A patent/FR2805395B1/fr not_active Expired - Fee Related
-
2001
- 2001-02-23 CA CA002399115A patent/CA2399115C/fr not_active Expired - Fee Related
- 2001-02-23 AU AU2001237483A patent/AU2001237483A1/en not_active Abandoned
- 2001-02-23 WO PCT/FR2001/000532 patent/WO2001063677A1/fr not_active Ceased
- 2001-02-23 EP EP01909882A patent/EP1258042A1/fr not_active Withdrawn
- 2001-02-23 JP JP2001562764A patent/JP5090601B2/ja not_active Expired - Fee Related
- 2001-02-23 US US10/204,530 patent/US6774451B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5140381A (en) * | 1990-03-22 | 1992-08-18 | France Telecom-Etablissement Autonome De Droit Public(Centre National D'etudes Des Telecommunications) | Optical detection device with variable detection threshold |
| EP0456059A1 (fr) * | 1990-04-27 | 1991-11-13 | Nec Corporation | Transistor film mince avec barrière Schottky |
| EP0469611A1 (fr) * | 1990-08-03 | 1992-02-05 | Hitachi, Ltd. | Dispositif à semi-conducteur à injection tunnel et son procédé de fabrication |
Non-Patent Citations (6)
| Title |
|---|
| FUJISHIMA M ET AL: "PROPOSAL OF A SCHOTTKY-BARRIER SET AIMING AT A FUTURE INTEGRATED DEVICE", IEICE TRANSACTIONS ON ELECTRONICS,JP,INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, vol. E 80-C, no. 7, 1 July 1997 (1997-07-01), pages 881 - 885, XP000740316, ISSN: 0916-8524 * |
| KIMURA M: "A NEW TYPE MOS-GATED TUNNEL TRANSISTOR WITH A SCHOTTKY BARRIER", IEEE REGION TEN INTERNATIONAL CONFERENCE ON MICROELECTRONICS AND VLSI.(TENCON),US,NEW YORK, IEEE, 6 November 1995 (1995-11-06), pages 387 - 390, XP000585809, ISBN: 0-7803-2625-3 * |
| NISHISAKA M ET AL: "REDUCTION OF THE FLOATING-BODY EFFECT IN SOI MOSFETS BY USING SCHOTTKY SOURCE/DRAIN CONTACTS", INTERNATIONAL CONFERENCE ON SOLID STATE DEVICES AND MATERIALS,JA,JAPAN SOCIETY OF APPLIED PHYSICS. TOKYO, 1 September 1997 (1997-09-01), pages 160 - 161, XP000728068 * |
| See also references of EP1258042A1 * |
| WANG C ET AL: "SUB-40 NM PTSI SCHOTTKY SOURCE/DRAIN METAL-OXIDE-SEMICONDUCTOR FIELD-EFFECT TRANSISTORS", APPLIED PHYSICS LETTERS,US,AMERICAN INSTITUTE OF PHYSICS. NEW YORK, vol. 74, no. 8, 22 February 1999 (1999-02-22), pages 1174 - 1176, XP000805877, ISSN: 0003-6951 * |
| WANG P J, MATERIAL RESEARCH SYMPOSIUM PROCEEDINGS, vol. 260, 1992, pages 863 - 868, XP000900684 * |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11056569B2 (en) | 2002-08-12 | 2021-07-06 | Acorn Semi, Llc | Method for depinning the fermi level of a semiconductor at an electrical junction and devices incorporating such junctions |
| US11355613B2 (en) | 2002-08-12 | 2022-06-07 | Acorn Semi, Llc | Method for depinning the Fermi level of a semiconductor at an electrical junction and devices incorporating such junctions |
| US11043571B2 (en) | 2002-08-12 | 2021-06-22 | Acorn Semi, Llc | Insulated gate field effect transistor having passivated schottky barriers to the channel |
| US11018237B2 (en) | 2002-08-12 | 2021-05-25 | Acorn Semi, Llc | Method for depinning the fermi level of a semiconductor at an electrical junction and devices incorporating such junctions |
| US10937880B2 (en) | 2002-08-12 | 2021-03-02 | Acorn Semi, Llc | Method for depinning the Fermi level of a semiconductor at an electrical junction and devices incorporating such junctions |
| US10950707B2 (en) | 2002-08-12 | 2021-03-16 | Acorn Semi, Llc | Method for depinning the Fermi level of a semiconductor at an electrical junction and devices incorporating such junctions |
| JP2004327777A (ja) * | 2003-04-25 | 2004-11-18 | Fujitsu Ltd | ショットキーソース・ドレイン構造を有する電界効果トランジスタの製造方法 |
| US10879366B2 (en) | 2011-11-23 | 2020-12-29 | Acorn Semi, Llc | Metal contacts to group IV semiconductors by inserting interfacial atomic monolayers |
| US11610974B2 (en) | 2011-11-23 | 2023-03-21 | Acorn Semi, Llc | Metal contacts to group IV semiconductors by inserting interfacial atomic monolayers |
| US11804533B2 (en) | 2011-11-23 | 2023-10-31 | Acorn Semi, Llc | Metal contacts to group IV semiconductors by inserting interfacial atomic monolayers |
| US12336263B2 (en) | 2011-11-23 | 2025-06-17 | Acorn Semi, Llc | Metal contacts to group IV semiconductors by inserting interfacial atomic monolayers |
| US10872964B2 (en) | 2016-06-17 | 2020-12-22 | Acorn Semi, Llc | MIS contact structure with metal oxide conductor |
| US11843040B2 (en) | 2016-06-17 | 2023-12-12 | Acorn Semi, Llc | MIS contact structure with metal oxide conductor |
| US10833199B2 (en) | 2016-11-18 | 2020-11-10 | Acorn Semi, Llc | Nanowire transistor with source and drain induced by electrical contacts with negative Schottky barrier height |
| US11462643B2 (en) | 2016-11-18 | 2022-10-04 | Acorn Semi, Llc | Nanowire transistor with source and drain induced by electrical contacts with negative Schottky barrier height |
| US12034078B2 (en) | 2016-11-18 | 2024-07-09 | Acorn Semi, Llc | Nanowire transistor with source and drain induced by electrical contacts with negative Schottky barrier height |
| US12477776B2 (en) | 2016-11-18 | 2025-11-18 | Acorn Semi, Llc | Nanowire transistor with source and drain induced by electrical contacts with negative Schottky barrier height |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003524899A (ja) | 2003-08-19 |
| CA2399115A1 (fr) | 2002-08-30 |
| EP1258042A1 (fr) | 2002-11-20 |
| JP5090601B2 (ja) | 2012-12-05 |
| AU2001237483A1 (en) | 2001-09-03 |
| CA2399115C (fr) | 2009-10-13 |
| US6774451B2 (en) | 2004-08-10 |
| FR2805395B1 (fr) | 2002-05-10 |
| FR2805395A1 (fr) | 2001-08-24 |
| US20030094629A1 (en) | 2003-05-22 |
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