WO2005122229A1 - キャパシタ膜の形成材料 - Google Patents
キャパシタ膜の形成材料 Download PDFInfo
- Publication number
- WO2005122229A1 WO2005122229A1 PCT/JP2005/010664 JP2005010664W WO2005122229A1 WO 2005122229 A1 WO2005122229 A1 WO 2005122229A1 JP 2005010664 W JP2005010664 W JP 2005010664W WO 2005122229 A1 WO2005122229 A1 WO 2005122229A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- hafnium
- forming
- compound
- capacitor film
- 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
-
- 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
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
- C23C16/40—Oxides
- C23C16/405—Oxides of refractory metals or yttrium
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D1/00—Resistors, capacitors or inductors
- H10D1/60—Capacitors
- H10D1/68—Capacitors having no potential barriers
- H10D1/682—Capacitors having no potential barriers having dielectrics comprising perovskite structures
-
- 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
-
- 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
- H10P14/69392—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 hafnium, e.g. HfO2
Definitions
- the present invention is suitable as a material for forming HfO or HfON, which is promising as a novel capacitor film.
- the present invention relates to a suitable material for forming a capacitor film and a method for manufacturing a capacitor film using the material.
- An oxide tantalum thin film is used as a capacitor film provided in a semiconductor memory device of this type, and Ta (OCH) or Ta (OCH) is used as a material for forming the oxide tantalum thin film.
- Ta (OC H) or the like is used. However, these materials are partially crystallized at room temperature.
- Ta sec-OCH
- Patent Document 1 A method for forming a film is disclosed (for example, refer to Patent Document 1).
- the forming material disclosed in Patent Document 1 has a high vapor pressure and low reactivity with water, so that it is excellent in workability and can form a uniform and good tantalum thin film.
- Patent Document 1 Japanese Patent Application Laid-Open No. 8-260151 (Claim 1, paragraphs [0002] to [0006])
- Ta compound as disclosed in Patent Document 1 is not included in the composition of this compound, the Nb element is inevitable in the reaction for synthesizing this compound. There was a problem that would always be included.
- Ta (OC H and Nb are 5ppm
- Nb is contained in the Ta-danied product in this way.
- the Nb element has a very similar chemical structure and behavior to the Ta element and cannot be easily removed. caused by. Nb as an inevitable dagger
- Nb reacts with oxygen at a low temperature of less than 200 ° C to form NbO, and this NbO is formed at a temperature of about 300 ° C.
- Ta reacts with oxygen to form Ta O
- the film Since the film is formed mainly on the nuclei formed on the plate, a complex oxide film of Nb and Ta is formed, resulting in poor adhesion to the underlying metal such as Pt, Ru, Ir, and TiN. There was a problem.
- Nb element is contained as an unavoidable compound, the vaporization becomes unstable and the volatility is poor, the film formation rate is reduced, and the step coverage of the formed tantalum thin film is reduced. Was the cause.
- the crystallization temperature of the Tadani tantalum thin film is as low as 600 ° C in the first place, and is higher than 700 ° C. It must have stability with Si having a crystallization temperature of C or higher, and Ta has sufficient characteristics as a capacitor film because Ta reacts with Si to form TaSi (tantalum silicide).
- new materials have been sought in place of tantalum thin films.
- the invention according to claim 1 is a material for forming a capacitor film made of a hafnium oxide film provided in a semiconductor memory element, wherein the material is made of an organic hafnium compound and is an unavoidable product.
- HfO having a high growth rate and excellent step coverage
- HfON can be formed. HfO and HfON are highly attracted
- the invention according to claim 2 is the invention according to claim 1, and is a forming material having a general formula of an organic hafnium compound represented by the following formula (1).
- R 2 is a linear or branched alkyl group having 1 to 4 carbon atoms, and R 1 and R 2 may be the same as or different from each other.
- the invention according to claim 3 is the invention according to claim 1, wherein the organic hafnium compound has a general formula represented by the following formula (2).
- R 3 is a linear or branched alkyl group having 1 to 4 carbon atoms
- R 4 is a chelate coordination compound
- n is an integer of 0 to 4.
- the invention according to claim 4 provides a capacitor film made of a hafnium oxide film by a metal organic chemical vapor deposition method using the forming material according to claim 1 or 3. This is a method for manufacturing a capacitor film characterized by being manufactured.
- HfO or HfON having a high growth rate and excellent step coverage is provided.
- a hafnium oxide film such as 2 can be formed. Since this hafnium oxide film has a high dielectric constant and low reactivity with Si, it is promising as a capacitor film having excellent characteristics.
- the present invention uses an organic hafnium compound having an Nb content of lppm or less, which is an unavoidable compound, as a material for forming a capacitor film.
- HfON or the like can be formed.
- HfO and HfON have a high dielectric constant and
- FIG. 1 is a schematic diagram of a MOCVD apparatus.
- FIG. 2 is a cross-sectional view of a substrate for explaining how to obtain a step coverage when a film is formed by MOCVD.
- the material for forming a capacitor film of the present invention is a material for forming a capacitor film made of a hafnium oxide film provided in a semiconductor memory element.
- the characteristic configuration is characterized in that the forming material is an organic hafnium compound, and the content of Nb, which is an inevitable conjugate, is lppm or less.
- an organic hafnium compound having an Nb content of lppm or less which is an unavoidable conjugation product, as a material for forming a capacitor film, HfO, HfON, or the like having excellent step coverage can be formed at a high growth rate.
- HfO and HfON have high dielectric constants.
- Nb which is an unavoidable conjugate
- Si silicon
- the preferred Nb content is 0.15 to 0.2 ppm.
- organic hafnium compound serving as the forming material of the present invention a compound represented by the following formula (1) is preferable.
- R 2 is a linear or branched alkyl group having 1 to 4 carbon atoms, and R 1 and R 2 may be the same as or different from each other.
- organic hafnium compound a compound represented by the following formula (2) is preferable.
- R 3 is a linear or branched alkyl group having 1 to 4 carbon atoms
- R 4 is a chelate coordination compound
- n is an integer of 0 to 4.
- the forming material of the present invention is obtained as follows.
- hafnium tetrachloride is prepared. It is usually commercially available In this case, about 500 to 100 ppm of Nb is contained as an inevitable compound.
- hafnium tetrachloride is dissolved in concentrated hydrochloric acid to prepare a solution, and the solution is maintained at a temperature of 60 ° C and stirred for 24 hours. After the stirring, the dissolving liquid is removed from hydrochloric acid to obtain a crystalline white solid.
- an ocher solid precipitates. Since the precipitate is a hydroxide containing Nb, the ocher solid is filtered. The filtrate obtained by filtration is neutralized with ammonia gas, and the solution is concentrated to obtain a crystalline solid. Further, by maintaining the crystalline solid at 1000 ° C. and introducing chlorine gas at a predetermined rate, specifically, at a rate of 100 ccm for about 2 hours, a purified product of hafnium tetrachloride can be obtained. Through the above purification, the Nb content of hafnium of Shishidani becomes about lppm.
- the Nb content of the hafnium tetrachloride can be extremely reduced.
- a desired organic compound or a compound of the organic compound is synthesized to obtain the material of the present invention.
- MOCVD metal organic chemical vapor deposition
- the forming material of the present invention may be dissolved in an organic solvent at a predetermined ratio and used as a solution raw material.
- the solvent used in this case include N-containing compounds such as diamine, hydrocarbons having 1 to 20 carbon atoms, alcohols such as butanol, and ethers such as THF.
- the proportion of the forming material and the organic solvent can be appropriately adjusted in accordance with the film forming apparatus, the characteristics of the substrate on which the film is formed, the type of the film to be formed, and the like.
- a method for forming a capacitor film made of a hafnium oxide thin film by MOCVD using the material for forming a capacitor film of the present invention will be described.
- the MOCVD apparatus includes a film forming chamber 10 and a steam generator 11.
- a heater 12 is provided inside the film forming chamber 10, and a substrate 13 is held on the heater 12.
- the interior of the film forming chamber 10 is equipped with a pressure sensor 14, a cold trap 15, and a dollar valve 16. Vacuum is drawn by the piping 17 that can be used.
- An oxygen source introducing pipe 37 is connected to the film forming chamber 10 via a dollar valve 36 and a gas flow controller 34.
- the steam generator 11 includes a raw material container 18 for storing the material for forming the capacitor film of the present invention as a raw material.
- the material for forming the capacitor film a material formed of an organic hanium compound having a Nb content of 1 ppm or less is used. O gas is used as an oxygen source.
- O gas is used as an oxygen source.
- O gas and N 2 gas can be used as the oxygen source.
- An inert gas introduction pipe 21 for pressurization is connected via a node device 19, and a supply pipe 22 is connected to the raw material container 18.
- the supply pipe 22 is provided with a dollar valve 23 and a flow control device 24, and the supply pipe 22 is connected to a vaporization chamber 26.
- a carrier gas introduction pipe 29 is connected to the vaporization chamber 26 via a dollar valve 31 and a gas flow control device 28.
- the vaporization chamber 26 is further connected to the film formation chamber 10 by a pipe 27.
- a gas drain 32 and a drain 33 are connected to the vaporization chamber 26, respectively.
- an inert gas for pressurization is introduced into the raw material container 18 from the introduction pipe 21, and the raw material liquid stored in the raw material container 18 is transported to the vaporization chamber 26 by the supply pipe 22.
- the organic hafnium compound which is a forming material that has been vaporized into a vapor in the vaporization chamber 26, is further supplied into the film formation chamber 10 via a pipe 27 by a carrier gas introduced into the vaporization chamber 26 from a carrier gas introduction pipe 29. You. In the film forming chamber 10, the vapor of the organic hafnium compound is thermally decomposed and reacted with the O gas introduced from the oxygen source introduction pipe 37, thereby forming the oxidized oxide.
- the film is deposited on the heated substrate 13 to form a hafnium oxide thin film.
- the inert gas for pressurization and the carrier gas include anoregone, helium, nitrogen and the like.
- the formation material with extremely reduced Nb content does not form Nb film nuclei, has excellent adhesion to the substrate, and uses an organic hafnium compound.
- a hafnium oxide thin film having excellent step coverage can be formed at a high speed. Since the obtained hafnium oxide thin film has a high dielectric constant and low reactivity with Si, it functions as a capacitor film having excellent characteristics.
- a nitrogen source such as N gas, NH gas, NH
- an HfON thin film By supplying HfON, an HfON thin film can be formed. This HfON thin film also functions as a capacitor film having excellent characteristics.
- hafnium tetrachloride was prepared. When this commercially available hafnium tetrachloride was analyzed, it was found that Nb was contained as 100 ppm as an inevitable conjugate.
- 50 g of Hafnium tetrachloride was dissolved in 100 ml of concentrated hydrochloric acid to prepare a solution, and the solution was maintained at a temperature of 60 ° C. and stirred for 24 hours. After stirring, hydrochloric acid was also removed from the solution to obtain a crystalline white solid.
- Hafnium tetrachloride was obtained in the same manner as in Example 1 except that the dissolution in a mixed solution of hydrochloric acid and citric acid and the filtration of the precipitate were repeated three times.
- the Nb content of the resulting tetrachloride hafnium was 0.5 ppm.
- Example 4 Hafnium tetrachloride was obtained in the same manner as in Example 1 except that the dissolution in a mixed solution of hydrochloric acid and citric acid and the filtration of the precipitate were repeated five times.
- the Nb content of the resulting tetrachloride hafnium was 0.1 ppm.
- Tetrachloride hafnium was obtained in the same manner as in Example 1 except that the dissolution in a mixed solution of hydrochloric acid and citric acid and the filtration of the precipitate were repeated 10 times.
- the Nb content of the obtained tetrachloride hafnium was 0.05 ppm.
- a commercially available tetrachloride hafnium was prepared, and the desired tetrachloride hafnium was obtained by repeating recrystallization with hydrochloric acid on the tetrachloride hafnium 50 times.
- the Nb content of the resulting tetrachloride hafnium was 5 ppm.
- a commercially available tetrachloride hafnium was prepared, and recrystallization from hydrochloric acid was repeated 30 times to obtain the desired tetrachloride hafnium.
- the Nb content of the resulting tetrachloride hafnium was 1 Oppm.
- a commercially available tetrachloride hafnium was prepared, and recrystallization from hydrochloric acid was repeated 20 times to obtain the desired tetrachloride hafnium.
- the Nb content of the resulting tetrachloride hafnium was 20 ppm.
- a commercially available tetrachloride hafnium was prepared, and recrystallization from hydrochloric acid was repeated 10 times with respect to the tetrachloride hafnium to obtain a desired tetrachloride hafnium.
- the Nb content of the resulting tetrachloride hafnium was 50 ppm.
- hafnium tetrachloride was used as it was as an organic hafnium compound raw material.
- the Nb content of this hafnium tetrachloride was 100 ppm.
- Hf (EtN) was synthesized using the hafnium tetrachloride obtained in Examples 1 to 5 and Comparative Examples 1 to 5 as a raw material of an organic polyamide compound. This Hf (Et N) is used as a capacitor film forming material.
- a hafnium oxide thin film was formed by using Ar gas as a carrier gas and supplying a forming material at a rate of 0.5 ccZ, respectively, to form a hafnium oxide thin film for 1 minute, 5 minutes, 10 minutes, 20 minutes and At 30 minutes, one sheet each was removed from the film formation chamber.
- the thickness of the hafnium oxide thin film on the substrate after film formation was measured from a cross-sectional SEM (scanning electron microscope) image.
- the step coverage of the hafnium oxide thin film on the substrate after film formation was measured from a cross-sectional SEM (scanning electron microscope) image.
- the step coverage is expressed by the numerical value of aZb when the thin film 42 is formed on the substrate 41 having a step such as a groove shown in FIG. If aZb is 1.0, it can be said that the step coverage is good because the film is uniformly formed to the depth of the groove like the flat portion of the substrate. Conversely, if aZb is less than 1.0, it is difficult to form a film to the depth of the groove. If aZb is more than 1.0, the degree of film formation is deeper in the groove than in the flat part of the substrate. The step coverage is poor for each.
- Table 1 below shows the Nb content contained in the capacitor film forming material, the obtained film thickness per film formation time, and the step coverage.
- Hf (EtMeN) was synthesized using the hafnium tetrachloride obtained in Example 15 and Comparative Example 15 except that this Hf (EtMeN) was used as a material for forming a capacitor film.
- Hf (EtMeN) 0.005 0.8 3.8 9 19 18 0.9 1 0.9 0.8 1 note Hf (EtMeN) 5 0.3 1 1.1 0.1 0.01 0.1 0.1 0.02 0.002 0.002 a 2 Hf (EtMeN) 10 0.5 2 1.2 0.02 0.01 0.2 0.1 0.01 0.001 0.001 a 3 Hf (EtMeN) 20 0.6 3 0.6 0.2 0.01 0.2 0.08 0.02 0.01 0.001 a 4 Hf (EtMeN) 50 0.2 0.1 0.03 0.02 0.02 0.1 0.2 0.01 0.002 0.002
- Hf (MeN) was synthesized using the hafnium tetrachloride obtained in Example 15 and Comparative Example 15, and the above was used except that this Hf (MeN) was used as a material for forming a capacitor film.
- a film thickness test per film formation time and a step coverage test were performed in the same manner as Comparative Test 1.
- Table 3 shows the Nb content in the capacitor film forming material, the obtained film thickness per film formation time, and the step coverage.
- a film thickness test per film formation time and a step coverage test were performed in the same manner as in Comparative Test 1.
- Table 4 shows the Nb content in the capacitor film forming material, the obtained film thickness per film forming time, and the step coverage.
- the film formation rate was much higher and the film thickness per film formation time was uniform as compared with the case where the material for forming was used, resulting in high film formation stability. Is close to 1.0, and it is uniform to the depth of the groove as well as the flat part of the substrate. It turned out that a film was formed at once.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Formation Of Insulating Films (AREA)
- Chemical Vapour Deposition (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/570,092 US20070231251A1 (en) | 2004-06-11 | 2005-06-10 | Capacitor Film Forming Material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004-173596 | 2004-06-11 | ||
| JP2004173596 | 2004-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005122229A1 true WO2005122229A1 (ja) | 2005-12-22 |
Family
ID=35503362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/010664 Ceased WO2005122229A1 (ja) | 2004-06-11 | 2005-06-10 | キャパシタ膜の形成材料 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070231251A1 (ja) |
| CN (1) | CN1993812A (ja) |
| TW (1) | TW200604372A (ja) |
| WO (1) | WO2005122229A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7518199B2 (en) | 2005-01-26 | 2009-04-14 | Kabushiki Kaisha Toshiba | Insulating film containing an additive element and semiconductor device |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8158510B2 (en) | 2009-11-19 | 2012-04-17 | Stats Chippac, Ltd. | Semiconductor device and method of forming IPD on molded substrate |
| US8669637B2 (en) * | 2005-10-29 | 2014-03-11 | Stats Chippac Ltd. | Integrated passive device system |
| US8791006B2 (en) * | 2005-10-29 | 2014-07-29 | Stats Chippac, Ltd. | Semiconductor device and method of forming an inductor on polymer matrix composite substrate |
| US7851257B2 (en) * | 2005-10-29 | 2010-12-14 | Stats Chippac Ltd. | Integrated circuit stacking system with integrated passive components |
| US8409970B2 (en) | 2005-10-29 | 2013-04-02 | Stats Chippac, Ltd. | Semiconductor device and method of making integrated passive devices |
| US8188590B2 (en) | 2006-03-30 | 2012-05-29 | Stats Chippac Ltd. | Integrated circuit package system with post-passivation interconnection and integration |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11335310A (ja) * | 1998-03-16 | 1999-12-07 | Japan Pionics Co Ltd | 精製アルコキシド及びアルコキシドの精製方法 |
| JP2000345328A (ja) * | 1999-06-03 | 2000-12-12 | Japan Energy Corp | 高誘電体薄膜形成用スパッタリングターゲット及びその製造方法 |
| JP2002069027A (ja) * | 2000-08-25 | 2002-03-08 | Kojundo Chem Lab Co Ltd | ハフニウムアルコキシトリス(β−ジケトネート)とその製造方法およびそれを用いた酸化物膜の製法 |
| JP2004079931A (ja) * | 2002-08-22 | 2004-03-11 | Matsushita Electric Ind Co Ltd | 半導体装置の製造方法 |
| JP2004158481A (ja) * | 2002-11-01 | 2004-06-03 | Matsushita Electric Ind Co Ltd | 半導体装置の製造方法 |
-
2005
- 2005-06-08 TW TW094118913A patent/TW200604372A/zh unknown
- 2005-06-10 CN CNA2005800264992A patent/CN1993812A/zh active Pending
- 2005-06-10 US US11/570,092 patent/US20070231251A1/en not_active Abandoned
- 2005-06-10 WO PCT/JP2005/010664 patent/WO2005122229A1/ja not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11335310A (ja) * | 1998-03-16 | 1999-12-07 | Japan Pionics Co Ltd | 精製アルコキシド及びアルコキシドの精製方法 |
| JP2000345328A (ja) * | 1999-06-03 | 2000-12-12 | Japan Energy Corp | 高誘電体薄膜形成用スパッタリングターゲット及びその製造方法 |
| JP2002069027A (ja) * | 2000-08-25 | 2002-03-08 | Kojundo Chem Lab Co Ltd | ハフニウムアルコキシトリス(β−ジケトネート)とその製造方法およびそれを用いた酸化物膜の製法 |
| JP2004079931A (ja) * | 2002-08-22 | 2004-03-11 | Matsushita Electric Ind Co Ltd | 半導体装置の製造方法 |
| JP2004158481A (ja) * | 2002-11-01 | 2004-06-03 | Matsushita Electric Ind Co Ltd | 半導体装置の製造方法 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7518199B2 (en) | 2005-01-26 | 2009-04-14 | Kabushiki Kaisha Toshiba | Insulating film containing an additive element and semiconductor device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1993812A (zh) | 2007-07-04 |
| TW200604372A (en) | 2006-02-01 |
| US20070231251A1 (en) | 2007-10-04 |
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