WO2000034991A2 - Verfahren zur herstellung einer metalloxidschicht bzw. einer strukturierten metalloxidschicht - Google Patents
Verfahren zur herstellung einer metalloxidschicht bzw. einer strukturierten metalloxidschicht Download PDFInfo
- Publication number
- WO2000034991A2 WO2000034991A2 PCT/DE1999/003878 DE9903878W WO0034991A2 WO 2000034991 A2 WO2000034991 A2 WO 2000034991A2 DE 9903878 W DE9903878 W DE 9903878W WO 0034991 A2 WO0034991 A2 WO 0034991A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- metal oxide
- metal
- oxide layer
- oxide film
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 34
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 230000004888 barrier function Effects 0.000 claims abstract description 15
- 230000001590 oxidative effect Effects 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 33
- 235000012239 silicon dioxide Nutrition 0.000 claims description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 15
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 5
- 229920005591 polysilicon Polymers 0.000 claims description 5
- 150000002366 halogen compounds Chemical class 0.000 claims description 4
- 238000004544 sputter deposition Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 230000008569 process Effects 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/58—After-treatment
- C23C14/5846—Reactive treatment
- C23C14/5853—Oxidation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28158—Making the insulator
- H01L21/28167—Making the insulator on single crystalline silicon, e.g. using a liquid, i.e. chemical oxidation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/51—Insulating materials associated therewith
- H01L29/511—Insulating materials associated therewith with a compositional variation, e.g. multilayer structures
Definitions
- the invention relates to a method for producing a metal oxide layer or a structured metal oxide layer, in particular to a method for producing a metal oxide layer as a gate dielectric of a field effect transistor or as a so-called "storage node dielectric" in a memory cell.
- CMOS technology owes its outstanding position above all to the small space requirement of the MOS transistors themselves and the possibility of arranging the MOS transistors in an integrated circuit with the highest packing density. Added to this are the low power consumption and, with progressive reduction in structure, also a high switching speed.
- the progressive reduction in the size of the transistors means that increasingly thin dielectric layers have to be used as gate dielectrics for the effective control of the transistors.
- silicon dioxide is used as the gate dielectric
- the layer thickness of the gate dielectric would have to be less than 1.5 nm in 0.1 ⁇ technology.
- Deviations of only 0.1 nm mean fluctuations in the layer thickness in the order of 10%.
- such thin silicon dioxide layers lead to high leakage currents through the silicon dioxide layer, since the charge carriers can overcome the potential batteries generated by the silicon dioxide layer due to the effect of the quantum mechanical tunnel.
- a method for producing a metal oxide layer comprises the following steps:
- a metal layer is applied to the barrier layer
- the metal layer is thermally oxidized in an oxygen atmosphere, so that a metal oxide layer ⁇ 3) is produced.
- the process according to the invention has the advantage that no CVD processes have to be used to produce the actual metal oxide layer, as a result of which disruptive contamination of the metal oxide layer can be significantly reduced. Furthermore, the method according to the invention leads to very homogeneous interfaces of the metal oxide. The previously used CVD deposits, however, result in an inhomogeneous, rough interface on the substrate surface due to uncontrolled crystal formation at the beginning of the deposition. In addition, the method according to the invention can easily be integrated into the already existing processes for producing CMOS transistors and / or storage capacitors and is therefore very inexpensive to implement. The thermal oxidation of the metal layer leads to a very pure and stoichiometric metal oxide layer.
- a method for structuring the metal oxide layer is further provided according to the invention.
- the method according to the invention comprises the additional steps:
- the metal oxide layer is dry-etched in accordance with the mask in an oxidizing atmosphere at a temperature greater than 130 ° C., the oxidizing atmosphere having at least one halogen compound, in particular CF 4 .
- the method according to the invention has the advantage that the metal oxide can be dry-etched chemically even without a physical etching component. Accordingly, the method according to the invention has a high selectivity towards other materials such as silicon or silicon oxide.
- silicon dioxide or nitrided silicon dioxide is used as the barrier layer.
- titanium, tantalum or aluminum is used as the metal. It is also preferred if the metal is applied to the barrier layer by sputtering. It is further preferred if the barrier layer between
- the metal layer is between 5 and 15 nm thick.
- the barrier layer is essentially removed during the thermal oxidation of the metal layer.
- the mask is a polysilicon mask.
- the etching temperature is between 200 ° C. and 300 ° C., in particular approximately 250 ° C.
- the proportion of the halogen compound in the oxidizing atmosphere is between 1 and 10%.
- Figures 1 to 4 show a schematic representation of an embodiment of the inventive method.
- FIG. 1 shows a section of a silicon wafer with a silicon substrate 1.
- the state of a silicon wafer shown in FIG. 1 corresponds, for example, to the state that a silicon wafer assumes in a standard CMOS process after the wells of the CMOS transistors and the insulation (not shows) of the individual transistors has already been generated.
- This oxide layer 2 can be produced, for example, by thermal oxidation. If the thermal oxidation is carried out in an atmosphere that additionally or contains N 2 0 molecules, a nitrided silicon dioxide layer 2 can be produced.
- a titanium layer or tantalum layer 3 is subsequently applied to the oxide layer 2 as a metal layer.
- This titanium layer or tantalum layer 3 is produced by a sputtering process.
- the layer thickness of the titanium layer or tantalum layer 3 is approximately 6 nm. The resulting situation is shown in FIG. 2.
- the titanium layer or the tantalum layer 3 is converted ⁇ by thermal oxidation in a metal oxide layer. 3
- the conversion takes place in an oxygen atmosphere at around 600 ° C.
- the thermal oxidation of the metal layer leads to a very pure and stoichiometric metal oxide layer which has hardly any impurities.
- oxygen atoms are drawn from the silicon dioxide layer 2 into the metal layer 3, so that the silicon dioxide layer 2 is almost completely removed during the thermal oxidation of the metal layer. In this way, a very clean interface is created between the silicon substrate 1 and the metal oxide layer 3, which has a positive effect on the properties of the later field effect transistor.
- Subsequent heat treatment at about 900 ° C. can produce a titanium oxide layer 3 in the so-called rutile phase. This tempering can already occur when the Titanium oxide layer take place. However, it can only be carried out in a later process step in the manufacture of an integrated circuit.
- a polysilicon layer 4 follows on the metal oxide layer 3 ′′. The resulting situation is shown in FIG. 3. Depending on the process used, further layers, for example a TEOS oxide layer (not shown), can be deposited on the polysilicon layer 4.
- the gate tracks 5 in turn form a mask for the subsequent etching of the metal oxide layer 3 ⁇ .
- a mixture of CF 4 and 0 2 is used as the etching gas.
- the temperature of the etching is approximately 250 ° C.
- the etching gas is excited by HF coupling or microwave excitation to form a plasma.
- the ratio of CF 4 to 0 2 is about 2% to 98%.
- the released fluorine and the associated reaction of the metal oxide with the fluorine are responsible for the etching itself. Volatile metal-fluorine compounds are formed.
- the oxygen takes over the task as a passivator for the (poly) silicon. Si02 is formed by oxygen
- Binding energy (without the use of additional ion energy) is too high to be significantly etched by the low fluorine content.
- the metal oxide layer is therefore etched very selectively to (poly) silicon or to silicon oxide. The resulting situation is shown in Figure 4.
- the process of making the transistor can then continue according to a standard CMOS process to produce the full transistor. These steps are known per se, so that they do not need to be discussed further.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Formation Of Insulating Films (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Laminated Bodies (AREA)
- Semiconductor Memories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19856084.2 | 1998-12-04 | ||
DE1998156084 DE19856084C2 (de) | 1998-12-04 | 1998-12-04 | Verfahren zur Herstellung einer Metalloxidschicht bzw. einer strukturierten Metalloxidschicht |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000034991A2 true WO2000034991A2 (de) | 2000-06-15 |
WO2000034991A3 WO2000034991A3 (de) | 2000-11-16 |
Family
ID=7890039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1999/003878 WO2000034991A2 (de) | 1998-12-04 | 1999-12-03 | Verfahren zur herstellung einer metalloxidschicht bzw. einer strukturierten metalloxidschicht |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE19856084C2 (de) |
TW (1) | TW495554B (de) |
WO (1) | WO2000034991A2 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4574177A (en) * | 1982-02-01 | 1986-03-04 | Texas Instruments Incorporated | Plasma etch method for TiO2 |
EP0547884A1 (de) * | 1991-12-18 | 1993-06-23 | Kabushiki Kaisha Toshiba | Verfahren zum selektiven Ätzen eines Metall-Oxids auf einem Tantal enthaltenden Material |
EP0709897A1 (de) * | 1992-12-24 | 1996-05-01 | OHMI, Tadahiro | Halbleiteranordnung |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5861763A (ja) * | 1981-10-09 | 1983-04-12 | 武笠 均 | 触感知器消化装置 |
-
1998
- 1998-12-04 DE DE1998156084 patent/DE19856084C2/de not_active Expired - Fee Related
-
1999
- 1999-11-30 TW TW88120909A patent/TW495554B/zh active
- 1999-12-03 WO PCT/DE1999/003878 patent/WO2000034991A2/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4574177A (en) * | 1982-02-01 | 1986-03-04 | Texas Instruments Incorporated | Plasma etch method for TiO2 |
EP0547884A1 (de) * | 1991-12-18 | 1993-06-23 | Kabushiki Kaisha Toshiba | Verfahren zum selektiven Ätzen eines Metall-Oxids auf einem Tantal enthaltenden Material |
EP0709897A1 (de) * | 1992-12-24 | 1996-05-01 | OHMI, Tadahiro | Halbleiteranordnung |
Non-Patent Citations (4)
Title |
---|
JAE-WHAN KIM ET AL: "REACTIVE ION ETCHING MECHANISM OF PLASMA ENHANCED CHEMICALLY VAPOR DEPOSITED ALUMINUM OXIDE FILM IN CF4/O2 PLASMA" JOURNAL OF APPLIED PHYSICS,US,AMERICAN INSTITUTE OF PHYSICS. NEW YORK, Bd. 78, Nr. 3, 1. August 1995 (1995-08-01), Seiten 2045-2049, XP000541839 ISSN: 0021-8979 * |
KIZILYALLI I C ET AL: "STACKED GATE DIELECTRICS WITH TAO FOR FUTURE CMOS TECHNOLOGIES" SYMPOSIUM ON VLSI TECHNOLOGY,US,NEW YORK, NY: IEEE, Bd. CONF. 18, 1998, Seiten 216-217, XP000802808 ISBN: 0-7803-4771-4 * |
SUNG WOOK PARK ET AL: "EFFECTS OF OXIDATION CONDITIONS ON THE PROPERTIES OF TANTALUM OXIDE FILMS ON SILICON SUBSTRATES" THIN SOLID FILMS,CH,ELSEVIER-SEQUOIA S.A. LAUSANNE, Bd. 207, Nr. 1 / 02, 30. Januar 1992 (1992-01-30), Seiten 258-264, XP000355368 ISSN: 0040-6090 * |
YOKOTA K, YAMADA T: "Preparation of titanium-dioxide films by heating titanium/silicon-dioxide structures on silicon in oxygen" MATER. RES. INNOV. (GERMANY), MATERIALS RESEARCH INNOVATIONS, SPRINGER-VERLAG, GERMANY, Bd. 2, Nr. 2, 12. Oktober 1998 (1998-10-12), Seiten 103-109, XP000884396 * |
Also Published As
Publication number | Publication date |
---|---|
TW495554B (en) | 2002-07-21 |
DE19856084C2 (de) | 2002-07-11 |
WO2000034991A3 (de) | 2000-11-16 |
DE19856084A1 (de) | 2000-06-08 |
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