EP1525613A1 - VERWENDUNG VON MASKEN AUS METALLOXIDEN ZUR BEARBEITUNG VON OBERFLäCHEN BEI DER HERSTELLUNG VON MIKROCHIPS - Google Patents
VERWENDUNG VON MASKEN AUS METALLOXIDEN ZUR BEARBEITUNG VON OBERFLäCHEN BEI DER HERSTELLUNG VON MIKROCHIPSInfo
- Publication number
- EP1525613A1 EP1525613A1 EP03787667A EP03787667A EP1525613A1 EP 1525613 A1 EP1525613 A1 EP 1525613A1 EP 03787667 A EP03787667 A EP 03787667A EP 03787667 A EP03787667 A EP 03787667A EP 1525613 A1 EP1525613 A1 EP 1525613A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- semiconductor
- metal oxide
- sections
- silicon
- layer
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
- H10B12/038—Making the capacitor or connections thereto the capacitor being in a trench in the substrate
- H10B12/0387—Making the trench
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/01—Manufacture or treatment
- H10D1/045—Manufacture or treatment of capacitors having potential barriers, e.g. varactors
- H10D1/047—Manufacture or treatment of capacitors having potential barriers, e.g. varactors of conductor-insulator-semiconductor capacitors, e.g. trench capacitors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6302—Non-deposition formation processes
- H10P14/6304—Formation by oxidation, e.g. oxidation of the substrate
- H10P14/6306—Formation by oxidation, e.g. oxidation of the substrate of the semiconductor materials
- H10P14/6308—Formation by oxidation, e.g. oxidation of the substrate of the semiconductor materials of Group IV semiconductors
- H10P14/6309—Formation by oxidation, e.g. oxidation of the substrate of the semiconductor materials of Group IV semiconductors of silicon in uncombined form, i.e. pure silicon
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6302—Non-deposition formation processes
- H10P14/6316—Formation by nitridation, e.g. nitridation of the substrate
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/63—Formation of materials, e.g. in the shape of layers or pillars of insulating materials characterised by the formation processes
- H10P14/6326—Deposition processes
- H10P14/6328—Deposition from the gas or vapour phase
- H10P14/6334—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H10P14/6339—Deposition from the gas or vapour phase using decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition deposition by cyclic CVD, e.g. ALD, ALE or pulsed CVD
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/69—Inorganic materials
- H10P14/692—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses
- H10P14/6938—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses the material containing at least one metal element, e.g. metal oxides, metal oxynitrides or metal oxycarbides
- H10P14/6939—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses the material containing at least one metal element, e.g. metal oxides, metal oxynitrides or metal oxycarbides characterised by the metal
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P14/00—Formation of materials, e.g. in the shape of layers or pillars
- H10P14/60—Formation of materials, e.g. in the shape of layers or pillars of insulating materials
- H10P14/69—Inorganic materials
- H10P14/692—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses
- H10P14/6938—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses the material containing at least one metal element, e.g. metal oxides, metal oxynitrides or metal oxycarbides
- H10P14/6939—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses the material containing at least one metal element, e.g. metal oxides, metal oxynitrides or metal oxycarbides characterised by the metal
- H10P14/69391—Inorganic materials composed of oxides, glassy oxides or oxide-based glasses the material containing at least one metal element, e.g. metal oxides, metal oxynitrides or metal oxycarbides characterised by the metal the material containing aluminium, e.g. Al2O3
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10P—GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- H10P50/00—Etching of wafers, substrates or parts of devices
- H10P50/20—Dry etching; Plasma etching; Reactive-ion etching
- H10P50/28—Dry etching; Plasma etching; Reactive-ion etching of insulating materials
- H10P50/282—Dry etching; Plasma etching; Reactive-ion etching of insulating materials of inorganic materials
- H10P50/283—Dry etching; Plasma etching; Reactive-ion etching of insulating materials of inorganic materials by chemical means
Definitions
- the capacitor is connected to a transistor in memory chips, via which the charge state of the capacitor can be controlled.
- the transistor is usually arranged above the capacitor.
- the uppermost section of the trench, to which the transistor connects is not doped.
- the trench is therefore only filled up to the limit with a solid form of the dopant, for example an arsenic glass, within which the walls of the trench are to be doped in order to produce the bottom electrode.
- the trench is first completely filled with the arsenic glass and the filling is then etched back to the limit up to which the semiconductor is to be doped.
- the dopant can also be introduced into the semiconductor from the gas phase. Since a sufficiently high concentration of the dopant is constantly available in the gas phase, a high doping of the sections of the semiconductor which form the bottom electrode in the finished capacitor is achieved, it being possible in particular to set a high concentration of the dopant at the interface between the semiconductor and the dielectric , However, this requires that those areas of the semiconductor which are to remain undoped are covered with a diffusion barrier. In the manufacture of deep trench capacitors, a collar made of silicon nitride is therefore first built up in the upper section of the trench, which then acts as a diffusion barrier in gas phase doping.
- the processing can only affect the surface, but it is also possible to modify regions of the semiconductor substrate which are close to the surface and which are preferably composed of silicon.
- the method according to the invention is used particularly advantageously for the selective doping of the semiconductor. Even with thin layers, metal oxides show a strong barrier effect against the diffusion of the dopant. This makes it possible, for example in trenches for deep trench capacitors which have a very small diameter, to achieve a reliable blocking effect against doping in the first sections which are covered by the metal oxide. No doping takes place in these sections, whereas a high doping of the semiconductor is achieved in the second sections, in which the semiconductor is exposed.
- the method can be used in particular for the production of bottom electrodes of deep trench capacitors.
- a trench is first introduced in the semiconductor, the trench having a wall which is partially covered with the metal oxide, so that first and second sections are obtained on the wall, the first sections being formed from the deposited metal oxide and the second sections correspond to the areas of the wall in which the semiconductor is exposed.
- the metal oxide is generally applied as a collar in the upper region of the trench, that is to say subsequently for opening the trench to the surface of the semiconductor substrate.
- the semiconductor can then be selectively doped in the exposed sections by means of gas phase doping in order to produce a bottom electrode.
- the wafer prepared in this way was examined with SIMS (secondary ion mass spectroscopy), so that a depth profile of the arsenic concentration was obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Semiconductor Integrated Circuits (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10234734 | 2002-07-30 | ||
| DE10234734A DE10234734A1 (de) | 2002-07-30 | 2002-07-30 | Verwendung von Masken aus Metalloxiden zur Bearbeitung von Oberflächen bei der Herstellung von Mikrochips |
| PCT/DE2003/002378 WO2004017404A1 (de) | 2002-07-30 | 2003-07-15 | Verwendung von masken aus metalloxiden zur bearbeitung von oberflächen bei der herstellung von mikrochips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1525613A1 true EP1525613A1 (de) | 2005-04-27 |
Family
ID=30128526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03787667A Withdrawn EP1525613A1 (de) | 2002-07-30 | 2003-07-15 | VERWENDUNG VON MASKEN AUS METALLOXIDEN ZUR BEARBEITUNG VON OBERFLäCHEN BEI DER HERSTELLUNG VON MIKROCHIPS |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7268037B2 (de) |
| EP (1) | EP1525613A1 (de) |
| DE (1) | DE10234734A1 (de) |
| TW (1) | TWI239047B (de) |
| WO (1) | WO2004017404A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7232718B2 (en) * | 2003-09-17 | 2007-06-19 | Nanya Technology Corp. | Method for forming a deep trench capacitor buried plate |
| DE102004027271B4 (de) * | 2004-06-03 | 2007-09-27 | Qimonda Ag | Verfahren zur Herstellung eines Grabenkondensators |
| CN113053736B (zh) * | 2021-03-11 | 2024-05-03 | 捷捷半导体有限公司 | 一种半导体器件制作方法 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0543158A2 (de) * | 1991-11-22 | 1993-05-26 | International Business Machines Corporation | Herstellungsverfahren von einer leitenden Verbindung in einer Halbleitervorrichtung |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4012763A (en) * | 1971-01-29 | 1977-03-15 | Hitachi, Ltd. | Semiconductor device having insulator film with different prescribed thickness portions |
| US4157269A (en) * | 1978-06-06 | 1979-06-05 | International Business Machines Corporation | Utilizing polysilicon diffusion sources and special masking techniques |
| DE3102647A1 (de) * | 1981-01-27 | 1982-08-19 | Siemens AG, 1000 Berlin und 8000 München | Strukturierung von metalloxidmasken, insbesondere durch reaktives ionenstrahlaetzen |
| US4958206A (en) * | 1988-06-28 | 1990-09-18 | Texas Instruments Incorporated | Diffused bit line trench capacitor dram cell |
| US5523590A (en) * | 1993-10-20 | 1996-06-04 | Oki Electric Industry Co., Ltd. | LED array with insulating films |
| TW425674B (en) * | 1999-05-07 | 2001-03-11 | Mosel Vitelic Inc | Fabrication method for trench capacitor with sacrificial silicon nitride sidewall |
| EP1150350A3 (de) * | 2000-02-25 | 2002-04-24 | Infineon Technologies North America Corp. | Herstellung eines Grabenkondensators |
| DE10014920C1 (de) * | 2000-03-17 | 2001-07-26 | Infineon Technologies Ag | Verfahren zur Herstellung eines Grabenkondensators |
| DE10034003A1 (de) * | 2000-07-07 | 2002-01-24 | Infineon Technologies Ag | Grabenkondensator mit Isolationskragen und entsprechendes Herstellungsverfahren |
| DE10100582A1 (de) * | 2001-01-09 | 2002-07-18 | Infineon Technologies Ag | Verfahren zur Herstellung von Grabenkondensatoren für integrierte Halbleiterspeicher |
| DE10113187C1 (de) * | 2001-03-19 | 2002-08-29 | Infineon Technologies Ag | Verfahren zur Herstellung eines Grabenkondensators einer Speicherzelle eines Halbleiterspeichers |
| US20020197823A1 (en) * | 2001-05-18 | 2002-12-26 | Yoo Jae-Yoon | Isolation method for semiconductor device |
| DE10164741A1 (de) * | 2001-06-12 | 2003-06-26 | Infineon Technologies Ag | Mehrfachabscheidung von Metallschichten zur Herstellung der oberen Kondensatorelektrode eines Grabenkondensators |
-
2002
- 2002-07-30 DE DE10234734A patent/DE10234734A1/de not_active Ceased
-
2003
- 2003-07-03 TW TW092118251A patent/TWI239047B/zh not_active IP Right Cessation
- 2003-07-15 EP EP03787667A patent/EP1525613A1/de not_active Withdrawn
- 2003-07-15 WO PCT/DE2003/002378 patent/WO2004017404A1/de not_active Ceased
-
2005
- 2005-01-24 US US11/040,091 patent/US7268037B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0543158A2 (de) * | 1991-11-22 | 1993-05-26 | International Business Machines Corporation | Herstellungsverfahren von einer leitenden Verbindung in einer Halbleitervorrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI239047B (en) | 2005-09-01 |
| WO2004017404A1 (de) | 2004-02-26 |
| DE10234734A1 (de) | 2004-02-12 |
| US20050181557A1 (en) | 2005-08-18 |
| TW200405439A (en) | 2004-04-01 |
| US7268037B2 (en) | 2007-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3841588C2 (de) | ||
| DE19521489B4 (de) | Kondensatorplatte und Kondensator, je in einer Halbleitervorrichtung gebildet, die Verwendung eines solchen Kondensators als Speicherkondensator einer Halbleitervorrichtung, Verfahren zur Herstellung eines Kondensators und Verwendung eines solchen Verfahrens zur Herstellung von DRAM-Vorrichtungen | |
| DE69427176T2 (de) | Verfahren zur Herstellung einer Halbleiter-Kondensator-Elektrode | |
| DE3788172T2 (de) | MIS integrierte Schaltung, wie eine EPROM-Speicherzelle, und Verfahren zu deren Herstellung. | |
| DE69623679T2 (de) | Verfahren zur Herstellung einer Grabenstruktur für die Isolation in einer integrierten Schaltung | |
| DE10222083B4 (de) | Isolationsverfahren für eine Halbleitervorrichtung | |
| EP0000897B1 (de) | Verfahren zum Herstellen von lateral isolierten Siliciumbereichen | |
| DE69133316T2 (de) | Verfahren zum Herstellen einer Halbleitervorrichtung | |
| DE10219123B4 (de) | Verfahren zur Strukturierung keramischer Schichten auf Halbleitersubstanzen mit unebener Topographie | |
| DE3334624C2 (de) | ||
| DE69120488T2 (de) | Verfahren zur Herstellung eines Isolierungsbereiches von Halbleiterbauelementen | |
| DE19961085A1 (de) | Verfahren zum Herstellen einer Tiefgrabenspeicherelektrode eines Kondensators | |
| DE10255841A1 (de) | Kondensator mit ruthenhaltigen Elektroden | |
| EP1166350B1 (de) | Verfahren zur herstellung einer dram-struktur mit vergrabenen bitleitungen oder grabenkondensatoren | |
| EP1128428B1 (de) | Verfahren zur Herstellung eines Halbleiterbauelements | |
| DE2539073B2 (de) | Feldeffekt-Transistor mit isolierter Gate-Elektrode und Verfahren zu dessen Herstellung | |
| DE2845460A1 (de) | Verfahren zur herstellung einer halbleitervorrichtung | |
| DE4016268C2 (de) | ||
| DE10239044B4 (de) | Prozessfluss für Opferkragen | |
| DE19947053C1 (de) | Grabenkondensator zu Ladungsspeicherung und Verfahren zu seiner Herstellung | |
| DE102016100938A1 (de) | Steuern des Reflow-Verhaltens von BPSG-Filmen und hiermit hergestellte Vorrichtungen | |
| DE3829015C2 (de) | Verfahren zur Herstellung einer Halbleitervorrichtung mit abgerundeten Eckabschnitten | |
| DE4013929C2 (de) | Verfahren zum Einbringen von Störstoffen in eine Halbleitermaterial-Schicht beim Herstellen eines Halbleiterbauelements und Anwendung des Verfahrens | |
| DE10352068B4 (de) | Ausbilden von Siliziumnitridinseln für eine erhöhte Kapazität | |
| DE19720193C2 (de) | Integrierte Schaltungsanordnung mit mindestens zwei vertikalen MOS-Transistoren und Verfahren zu deren Herstellung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20050105 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IE IT |
|
| 17Q | First examination report despatched |
Effective date: 20050617 |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): DE |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HECHT, THOMAS Inventor name: JAKSCHIK, STEFAN Inventor name: SCHROEDER, UWE Inventor name: GOLDBACH, MATTHIAS |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20090428 |