EP1958241A2 - Verfahren zur trockenchemischen behandlung von substraten, sowie dessen verwendung - Google Patents
Verfahren zur trockenchemischen behandlung von substraten, sowie dessen verwendungInfo
- Publication number
- EP1958241A2 EP1958241A2 EP06829345A EP06829345A EP1958241A2 EP 1958241 A2 EP1958241 A2 EP 1958241A2 EP 06829345 A EP06829345 A EP 06829345A EP 06829345 A EP06829345 A EP 06829345A EP 1958241 A2 EP1958241 A2 EP 1958241A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- gas
- chlorine
- silicon
- etching
- 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
- 239000000758 substrate Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 49
- 239000000126 substance Substances 0.000 title claims abstract description 9
- 238000005530 etching Methods 0.000 claims abstract description 42
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 31
- 239000010703 silicon Substances 0.000 claims abstract description 31
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011521 glass Substances 0.000 claims abstract description 6
- 235000012431 wafers Nutrition 0.000 claims description 27
- 239000000460 chlorine Substances 0.000 claims description 22
- 229910052801 chlorine Inorganic materials 0.000 claims description 22
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 18
- 125000004429 atom Chemical group 0.000 claims description 17
- 150000001875 compounds Chemical class 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 9
- 239000002344 surface layer Substances 0.000 claims description 9
- 239000002244 precipitate Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 150000001805 chlorine compounds Chemical class 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- 239000005046 Chlorosilane Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 4
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 claims description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- 238000011109 contamination Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 238000005247 gettering Methods 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 238000010924 continuous production Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims 1
- 150000004767 nitrides Chemical class 0.000 claims 1
- 150000004760 silicates Chemical class 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 31
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 9
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract description 9
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 26
- 230000000694 effects Effects 0.000 description 6
- 239000002019 doping agent Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- -1 POCl 3 and O2) Chemical compound 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- RLOWWWKZYUNIDI-UHFFFAOYSA-N phosphinic chloride Chemical compound ClP=O RLOWWWKZYUNIDI-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/91—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics involving the removal of part of the materials of the treated articles, e.g. etching
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
- C04B41/5338—Etching
- C04B41/5346—Dry etching
-
- 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
- H01L21/02041—Cleaning
- H01L21/02043—Cleaning before device manufacture, i.e. Begin-Of-Line process
- H01L21/02046—Dry cleaning only
-
- 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
- H01L21/322—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections
- H01L21/3221—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to modify their internal properties, e.g. to produce internal imperfections of silicon bodies, e.g. for gettering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1804—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof comprising only elements of Group IV of the Periodic Table
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/547—Monocrystalline silicon PV cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
Definitions
- the invention relates to a process for the dry chemical treatment of substrates selected from the group consisting of silicon, ceramic, glass and quartz glass, in which the substrate is treated in a heated reaction chamber with a gas containing hydrogen chloride as an etchant, and a process which can be prepared in this way Substrate.
- substrates selected from the group consisting of silicon, ceramic, glass and quartz glass, in which the substrate is treated in a heated reaction chamber with a gas containing hydrogen chloride as an etchant, and a process which can be prepared in this way Substrate.
- the invention also relates to uses of the aforementioned method.
- etching processes are known from the prior art for the surface treatment and cleaning of wafers, which are based on wet and dry chemical reactions with different chemicals.
- the methods used in the surface treatment and cleaning of such substrates can be divided into the following applications: Removal of surface areas to remove crystal damage from wafers. An example of this is the so-called damage rates in the pretreatment of solar cells.
- Removal of typically thin surface layers to remove surface contaminants from the wafer includes, for example, wet chemical oxidation with hot nitric acid as an etchant and subsequent etching with hydrofluoric acid to remove the SiO?
- the cleaning of the volume of a wafer by temperature treatment which can be accompanied by further etching steps.
- An example of this is so-called gettering, ie tempering in a phosphorus-containing atmosphere (eg POCl 3 and O2), followed by removal of the surface area, as a result of which contamination has accumulated from the volume of the wafer as a result of the treatment.
- gettering ie tempering in a phosphorus-containing atmosphere (eg POCl 3 and O2)
- Texture of surfaces of solar cells is that a previously damaged crystal surface is often required to ensure a homogeneous texture, as is the case, for example, with acidic wet chemical texture etching or a plasma texture etcher.
- a method for dry chemical treatment of substrates is selected from the group consisting of silicon, ceramic, glass and
- Quartz glass is provided, in which the substrate is treated in a heated reaction chamber with an etching gas from a chlorine-containing gas or a gas containing at least one chlorine-containing compound.
- the substrate is cleaned by selecting the temperature and the concentration of the chlorine-containing compound in the etching gas so that the volume contained compounds Cleaning and / or foreign atoms are at least partially removed.
- this method entails that the temperature-controlled etching gas triggers a chemical reaction with the silicon and with the foreign atoms contained in silicon, as a result of which the silicon is converted from the solid into the gaseous phase and the foreign atoms are converted into chlorides.
- the gas composition and the temperature effects can be exploited that represent a significantly better alternative to the etching application known from the prior art.
- the HCl gas etches the Si surface very quickly, isotropically and with a high degree of uniformity, ie a reflective surface is generated.
- metal atoms are also converted with chlorine from the etching gas to solid chlorides, which can be removed with the gas stream.
- metals especially iron, which is particularly harmful to solar cells, are very mobile and easy to diffuse in silicon. Contaminant precipitates can dissolve and atoms of the precipitate can mobilize. This is used according to the invention by exposing a silicon wafer to a temperature treatment in an atmosphere containing chlorine.
- the etching gas preferably contains hydrogen chloride or consists entirely of hydrogen chloride.
- concentration of the chlorine-containing compound can be selected from the range from 1 to 100% by volume. At the same time, a temperature of 700 to 1600 ° C. is preferred in order to allow the foreign atoms contained in the volume of the substrate to diffuse onto the surface of the substrate.
- a variant of the method according to the invention relates to the removal of contaminants from the
- Substrate that is in the form of precipitates is preferably chosen at temperatures in the range from 300 to 1000 ° C., since precipitates can be dissolved at this temperature and the individual constituents then diffuse to the surface. It is only after the precipitates have dissolved that they are then accessible to the chlorine-containing compound and, as described, can be chemically reacted and removed.
- the concentration of the chlorine-containing compound in the etching gas is preferably selected so that foreign atoms or dissolved constituents of precipitates in the area of the substrate are converted into the corresponding chlorides.
- the temperature and the concentration of the chlorine-containing compound in the etching gas in the method according to the invention are preferably matched to one another such that the rate of diffusion of the foreign atoms in the direction of the substrate surface is greater than the etching rate for the substrate.
- Another preferred variant of the method according to the invention provides for isotropic etching and removal during the treatment of a surface layer of the substrate.
- surface layers of a silicon wafer can be removed with extremely high etching rates of> 40 ⁇ m / min without causing further crystal damage.
- the surface layer is preferably removed in a thickness in the range from 5 to 50 ⁇ m, particularly preferably in the range from 10 to 20 ⁇ m.
- the methods known from the prior art require about 2 for the removal in a thickness in the latter region up to 5 min.
- the method according to the invention can achieve an acceleration by a factor of 10 here.
- the impurities and foreign atoms released during the etching can preferably be removed in a simple manner by the gas stream.
- medium etching rates can be achieved at medium temperatures, ie temperatures in the range from 900 to 1100 ° C., which allow a controlled texturing of the surface.
- a texturing can increase the coupling of light, for example for solar cells, that is, reduce the reflectivity, by treating the surface at the temperatures mentioned with the gas composition according to the invention.
- light refraction or light scattering takes place, which ensures improved light utilization, particularly in the case of crystalline silicon thin-film solar cells.
- Another variant provides that the surface of a silicon wafer is textured, on which a silicon layer is subsequently deposited, so that buried holes are formed on the former surface of the wafer by the wet deposition. These holes have a reflective effect on incoming light rays and thus also contribute to increasing the utilization of light (so-called guiding traffic).
- Another preferred variant of the method according to the invention provides for the removal of surface layers to remove surface contamination from substrates.
- Lower temperatures are temperatures in the range of about 300 to choose to 900 0 C, and then the surface of a silicon wafer is cleaned by the reactive chlorine-containing gas by effectively as metal impurities, only a very thin silicon layer is removed.
- the combination of different pretreatment steps is particularly preferred in the method according to the invention in order to enable an overall process of pretreating substrates.
- a variant of an overall process designed in this way which can be carried out as a continuous process, has the following steps: a) A substrate made of silicon is obtained by gettering with an etching gas from a chlorine-containing gas or a gas containing a chlorine-containing compound at temperatures in the range from 300 to 1600 0 C to remove contamination
- step a) before, after or simultaneously with
- Step b) or all three steps can be carried out simultaneously.
- the overall process described here can be supplemented by further process steps. These include: d) A layer of silicon is deposited on the substrate treated with steps a) to c) by at least partially replacing the etching gas with a deposition gas containing chlorosilanes. e) The layer deposited in d) becomes isotropic
- a layer of silicon is deposited by at least partially replacing the etching gas with a deposition gas containing chlorosilanes with complementary doping to produce a pn junction. Step e) can be done both before and after
- Step f) are carried out.
- the invention also provides a method for texturing tion of wafers in which a wafer in a heated reaction chamber at temperatures of 900 to 1100 0 C by a Texture gas from a chlorine-containing gas or at least one chlorine-containing compound gas is treated.
- a substrate selected from the group consisting of silicon, ceramic, glass and quartz glass is also provided, which can be produced by the previously described method. Such substrates are distinguished by a purity which is superior to that known from the prior art.
- the method according to the invention is used in the treatment steps described in the pretreatment of substrates, ie the purification of the volume of substrates, the removal of crystal damage in wafers, the removal of surface impurities in substrates and the texturing of wafers.
- FIG. 2a shows a microscopic picture of the surface of a substrate textured according to the invention.
- 2b shows a reflection spectrum of a substrate textured according to the invention.
- 3 shows a micrograph of the cross section of a wafer which has been textured according to the invention and then coated with an additional silicon layer.
- example 1
- silicon wafers were made from metallurgical (ie contaminated with approx. 0.5 at% dopants and metals) raw materials. posed. These still contained large amounts of dopants and, somewhat more difficult to detect, also of metals. Such silicon wafers were examined either directly or after volume cleaning in a hot 20% HCl in an E 2 atmosphere (1300 ° C., 5 min) by means of mass spectrometry. 1 shows the prepared measurement results: the dopants which are difficult to convert into chlorides are fully retained, while, for example, the more easily changeable copper is reduced by more than an order of magnitude.
- FIG. 2a a superficially microporous hole structure.
- the reflection behavior is plotted in FIG. 2b): before the etching treatment, an Si substrate has between 25 and 45% reflection, then between 5 and 15%. Also in a production of this structure according to the invention, i.e. additional volume cleaning, the measured properties would be maintained.
- a silicon layer was deposited in-situ on a surface similar to that shown in FIGS. 2a ⁇ and b).
- the cross section in Fig. 3 shows that the holes created by the texture partially. remain as pores and thereby create a light-reflecting effect. Despite the rough surface, the deposited layer grows very evenly and with high crystal quality.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drying Of Semiconductors (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Surface Treatment Of Glass (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005058713A DE102005058713B4 (de) | 2005-12-08 | 2005-12-08 | Verfahren zur Reinigung des Volumens von Substraten, Substrat sowie Verwendung des Verfahrens |
PCT/EP2006/011716 WO2007065658A2 (de) | 2005-12-08 | 2006-12-06 | Verfahren zur trockenchemischen behandlung von substraten, sowie dessen verwendung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1958241A2 true EP1958241A2 (de) | 2008-08-20 |
Family
ID=38055877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06829345A Ceased EP1958241A2 (de) | 2005-12-08 | 2006-12-06 | Verfahren zur trockenchemischen behandlung von substraten, sowie dessen verwendung |
Country Status (6)
Country | Link |
---|---|
US (1) | US8569175B2 (de) |
EP (1) | EP1958241A2 (de) |
JP (1) | JP5133257B2 (de) |
CN (1) | CN101326619A (de) |
DE (1) | DE102005058713B4 (de) |
WO (1) | WO2007065658A2 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5176423B2 (ja) * | 2007-08-10 | 2013-04-03 | 東京エレクトロン株式会社 | 石英製品のベーク方法及び記憶媒体 |
JP6108453B2 (ja) * | 2013-05-21 | 2017-04-05 | 大陽日酸株式会社 | 基板の再利用方法及び基板洗浄装置 |
CN103467108A (zh) * | 2013-08-21 | 2013-12-25 | 长兴攀江冶金材料有限公司 | 一种环保型硅质干式料的制备方法 |
JP5938113B1 (ja) * | 2015-01-05 | 2016-06-22 | 信越化学工業株式会社 | 太陽電池用基板の製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0617456A2 (de) * | 1993-03-08 | 1994-09-28 | Gi Corporation | Billiges Verfahren zur Herstellung von epitaktischen Halbleiteranordnungen |
JPH11121441A (ja) * | 1997-10-20 | 1999-04-30 | Fuji Electric Co Ltd | 炭化けい素半導体基板の製造方法 |
JP2003100693A (ja) * | 2001-09-26 | 2003-04-04 | Toshiba Ceramics Co Ltd | シリコン部材の純化方法 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51140574A (en) * | 1975-05-30 | 1976-12-03 | Hitachi Ltd | Method of cleaning silicon substrate plate |
US4149905A (en) * | 1977-12-27 | 1979-04-17 | Bell Telephone Laboratories, Incorporated | Method of limiting stacking faults in oxidized silicon wafers |
US4231809A (en) * | 1979-05-25 | 1980-11-04 | Bell Telephone Laboratories, Incorporated | Method of removing impurity metals from semiconductor devices |
IE55119B1 (en) | 1983-02-04 | 1990-06-06 | Westinghouse Electric Corp | Closed tube gettering |
DE3516611A1 (de) * | 1985-05-08 | 1986-11-13 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zum herstellen eines halbleiterschaltkreises |
JPH071766B2 (ja) * | 1985-12-11 | 1995-01-11 | 富士通株式会社 | 半導体装置の製造方法 |
JPS62147722A (ja) * | 1985-12-23 | 1987-07-01 | Hitachi Ltd | エピタキシヤル成長方法 |
GB2196002B (en) * | 1986-09-05 | 1990-08-22 | Central Glass Co Ltd | Preparation of polyfluoroaldehydes and polyfluoroacetals |
US4732874A (en) * | 1986-10-15 | 1988-03-22 | Delco Electronics Corporation | Removing metal precipitates from semiconductor devices |
US4897366A (en) * | 1989-01-18 | 1990-01-30 | Harris Corporation | Method of making silicon-on-insulator islands |
US4983370A (en) * | 1990-02-06 | 1991-01-08 | The Feldspar Corporation | Purified quartz and process for purifying quartz |
JPH04177880A (ja) * | 1990-11-13 | 1992-06-25 | Canon Inc | 太陽電池および該太陽電池の製造方法 |
EP0541033A3 (en) * | 1991-11-08 | 1993-06-30 | Siemens Aktiengesellschaft | Process of fabrication of thin-film polycristalline silicon solar cells |
EP0547677A3 (en) * | 1991-12-17 | 1996-10-16 | Philips Nv | Use of vapor-phase etching in fabrication of semiconductor-on-insulator structure |
JPH07109825B2 (ja) * | 1992-01-13 | 1995-11-22 | 富士通株式会社 | 半導体基板表面もしくは薄膜表面のドライ洗浄法 |
JP3398904B2 (ja) | 1995-10-31 | 2003-04-21 | 富士通株式会社 | 基板表面の乾式洗浄方法 |
JPH1070298A (ja) | 1996-08-28 | 1998-03-10 | Nippon Telegr & Teleph Corp <Ntt> | 太陽電池およびその製造方法 |
JPH10116900A (ja) * | 1996-10-11 | 1998-05-06 | Asahi Kasei Micro Syst Kk | 半導体装置の製造方法 |
JP3324455B2 (ja) * | 1997-07-18 | 2002-09-17 | 信越半導体株式会社 | 珪素系半導体基板の清浄化方法 |
US6338756B2 (en) * | 1998-06-30 | 2002-01-15 | Seh America, Inc. | In-situ post epitaxial treatment process |
JP2001244240A (ja) * | 2000-02-25 | 2001-09-07 | Speedfam Co Ltd | 半導体ウエハの製造方法 |
WO2002015255A1 (en) * | 2000-08-11 | 2002-02-21 | Chem Trace Corporation | System and method for cleaning semiconductor fabrication equipment parts |
US6875468B2 (en) * | 2001-04-06 | 2005-04-05 | Rwe Solar Gmbh | Method and device for treating and/or coating a surface of an object |
JP2003332240A (ja) | 2002-05-10 | 2003-11-21 | Yamato Handotai Kk | 珪素堆積膜の成膜装置のガスクリーニング方法 |
KR100543520B1 (ko) * | 2003-05-23 | 2006-01-20 | 준 신 이 | 폐웨이퍼를 이용한 수직형 다접합 태양전지의 제조방법 |
-
2005
- 2005-12-08 DE DE102005058713A patent/DE102005058713B4/de active Active
-
2006
- 2006-12-06 CN CNA2006800458653A patent/CN101326619A/zh active Pending
- 2006-12-06 WO PCT/EP2006/011716 patent/WO2007065658A2/de active Application Filing
- 2006-12-06 JP JP2008543722A patent/JP5133257B2/ja active Active
- 2006-12-06 EP EP06829345A patent/EP1958241A2/de not_active Ceased
- 2006-12-06 US US12/096,271 patent/US8569175B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0617456A2 (de) * | 1993-03-08 | 1994-09-28 | Gi Corporation | Billiges Verfahren zur Herstellung von epitaktischen Halbleiteranordnungen |
JPH11121441A (ja) * | 1997-10-20 | 1999-04-30 | Fuji Electric Co Ltd | 炭化けい素半導体基板の製造方法 |
JP2003100693A (ja) * | 2001-09-26 | 2003-04-04 | Toshiba Ceramics Co Ltd | シリコン部材の純化方法 |
Also Published As
Publication number | Publication date |
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WO2007065658A3 (de) | 2007-11-08 |
JP2009518834A (ja) | 2009-05-07 |
JP5133257B2 (ja) | 2013-01-30 |
CN101326619A (zh) | 2008-12-17 |
WO2007065658A2 (de) | 2007-06-14 |
US8569175B2 (en) | 2013-10-29 |
DE102005058713A1 (de) | 2007-06-14 |
DE102005058713B4 (de) | 2009-04-02 |
US20090197049A1 (en) | 2009-08-06 |
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