DE1196933B - Process for etching silicon semiconductor bodies - Google Patents
Process for etching silicon semiconductor bodiesInfo
- Publication number
- DE1196933B DE1196933B DET19889A DET0019889A DE1196933B DE 1196933 B DE1196933 B DE 1196933B DE T19889 A DET19889 A DE T19889A DE T0019889 A DET0019889 A DE T0019889A DE 1196933 B DE1196933 B DE 1196933B
- Authority
- DE
- Germany
- Prior art keywords
- acid
- etching
- silicon semiconductor
- treated
- semiconductor crystals
- 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.)
- Pending
Links
- 238000005530 etching Methods 0.000 title claims description 16
- 239000004065 semiconductor Substances 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims description 8
- 229910052710 silicon Inorganic materials 0.000 title claims description 8
- 239000010703 silicon Substances 0.000 title claims description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims description 14
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 8
- 229910017604 nitric acid Inorganic materials 0.000 claims description 8
- 229960000583 acetic acid Drugs 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 6
- 239000012362 glacial acetic acid Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- 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
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
-
- 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
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/764—Air gaps
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Weting (AREA)
Description
Verfahren zum Ätzen von Silizium-Halbleiterkörpern Die bekannten Ätzverfahren für Silizium-Halbleiterkristalle haben den Nachteil, daß die Oberfläche des Silizumkörpers nach dem Ätzprozeß noch eine zu große Rauhigkeit aufweist. Ein weiterer Nachteil besteht darin, daß bei den bekannten Verfahren die chemische Reaktion zu schnell abläuft, so daß eine Kontrolle des Ätzprozesses erschwert wird.Process for etching silicon semiconductor bodies The known etching processes for silicon semiconductor crystals have the disadvantage that the surface of the silicon body still has too great a roughness after the etching process. Another disadvantage is that in the known methods the chemical reaction is too fast runs, so that a control of the etching process is difficult.
Zur Vermeidung dieser Nachteile wird erfindungsgemäß vorgeschlagen, daß die Halbleiterkristalle mit einer Perchlorsäure enthaltenden Ätzlösung behandelt werden.To avoid these disadvantages, it is proposed according to the invention that that the semiconductor crystals are treated with an etching solution containing perchloric acid will.
Es empfiehlt sich, als weitere Bestandteile der Ätzlösung Salpetersäure, Flußsäure und Essigsäure zu verwenden. Gute Ergebnisse wurden erzielt mit einer Ätzlösung, die 100 Teile Salpetersäure, 10 Teile Perchlorsäure, 10 Teile Flußsäure und 1.5 Teile Essigsäure enthält. Es hat sich bei diesen Versuchen herausgestellt, daß die Oberfläche des behandelten Siliziumkörpers nach dem Ätzen besonders glatt war.It is recommended to use nitric acid as additional components of the etching solution, Use hydrofluoric acid and acetic acid. Good results have been achieved with a Etching solution containing 100 parts of nitric acid, 10 parts of perchloric acid, 10 parts of hydrofluoric acid and contains 1.5 parts of acetic acid. It has been found in these experiments that the surface of the treated silicon body is particularly smooth after the etching was.
Die Erfindung soll an einem Ausführungsbeispiel näher erläutert werden. Es handelt sich dabei um eine Dickenätzung eines Halbleiterkörpers aus Silizium, bei dem eine Abtragungsgeschwindigkeit von etwa 1 u pro Minute erzielt werden soll. Bei dieser Dickenätzung soll gleichzeitig eine ausgezeichnete Oberflächenqualität des behandelten Siliziumkörpers erreicht werden. Die gestellte Aufgabe wurde mit einer Ätzlösung erzielt, welche folgende Zusammensetzung hatte: 100 ml konz. Salpetersäure (HNO3, 65o/oig) + 10 ml Perchlorsäure (HC104, 70o/oig) -h 14 ml Eisessig (CH3COOH) -f- 10 ml Flußsäure (HF, 40o/oig) Soll eine schnellere Abtragung des Halbleitermaterials erfolgen, so empfiehlt es sich, die Lösung wie folgt abzuändern: 100 ml konz. Salpetersäure (HNO3, 65%ig) -h 15M1 Perchlorsäure (HC104, 60o/oig) -I- 14 ml Eisessig (CH3COOH) -i- 13 ml Flußsäure (HF, 40o/oig) Wie die Ausführungsbeispiele zeigen, läßt sich der Anteil der einzelnen Bestandteile je nach angestrebter Abtragungsgeschwindigkeit und Oberflächenglätte variieren.The invention is to be explained in more detail using an exemplary embodiment. It is a thickness etching of a semiconductor body made of silicon, in which a removal rate of about 1 u per minute is to be achieved. This thickness etching should also have an excellent surface quality of the treated silicon body can be achieved. The given task was with achieved an etching solution, which had the following composition: 100 ml conc. nitric acid (HNO3, 65o / oig) + 10 ml perchloric acid (HC104, 70o / oig) -h 14 ml glacial acetic acid (CH3COOH) -f- 10 ml hydrofluoric acid (HF, 40o / oig) is intended for faster removal of the semiconductor material take place, it is advisable to change the solution as follows: 100 ml conc. nitric acid (HNO3, 65%) -h 15M1 perchloric acid (HC104, 60o / oig) -I- 14 ml glacial acetic acid (CH3COOH) - 13 ml of hydrofluoric acid (HF, 40%) As the examples show, can the proportion of the individual components depending on the desired removal rate and surface smoothness vary.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET19889A DE1196933B (en) | 1961-03-30 | 1961-03-30 | Process for etching silicon semiconductor bodies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DET19889A DE1196933B (en) | 1961-03-30 | 1961-03-30 | Process for etching silicon semiconductor bodies |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1196933B true DE1196933B (en) | 1965-07-15 |
Family
ID=7549483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DET19889A Pending DE1196933B (en) | 1961-03-30 | 1961-03-30 | Process for etching silicon semiconductor bodies |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1196933B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1287405B (en) * | 1963-10-24 | 1969-01-16 | Licentia Gmbh | Etchant for semiconductor bodies made of silicon |
FR2356710A1 (en) * | 1976-06-29 | 1978-01-27 | Gaf Corp | NEW COMPOSITION FOR THE ATTACK OF AN ALUMINUM FILM AND ITS APPLICATION |
DE102014013591A1 (en) | 2014-09-13 | 2016-03-17 | Jörg Acker | Process for the preparation of silicon surfaces with low reflectivity |
-
1961
- 1961-03-30 DE DET19889A patent/DE1196933B/en active Pending
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1287405B (en) * | 1963-10-24 | 1969-01-16 | Licentia Gmbh | Etchant for semiconductor bodies made of silicon |
FR2356710A1 (en) * | 1976-06-29 | 1978-01-27 | Gaf Corp | NEW COMPOSITION FOR THE ATTACK OF AN ALUMINUM FILM AND ITS APPLICATION |
DE102014013591A1 (en) | 2014-09-13 | 2016-03-17 | Jörg Acker | Process for the preparation of silicon surfaces with low reflectivity |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2038564C3 (en) | Quartz glass device part, in particular quartz glass tube, with nuclei that promote crystal formation contained in its outer surface layer for use at high temperatures, in particular for carrying out semiconductor technology processes | |
DE2428380B2 (en) | Aqueous solution for removing nickel deposits | |
DE1196933B (en) | Process for etching silicon semiconductor bodies | |
DE1592535A1 (en) | Process for the production of uranyl fluoride from uranium hexafluoride | |
GB1349423A (en) | Desmutting etched aluminium-base alloys | |
DE1185896B (en) | Method for stabilizing the surface of semiconductor bodies with p-n junctions | |
Vyazovikina et al. | Some Features of Selective Dissolution of Ag--Au System Alloys | |
DE1166159B (en) | Process for reactivating the catalysts from the production of hydrogen peroxide by the anthraquinone process | |
AT237751B (en) | Method for manufacturing a semiconductor component | |
DE1064153B (en) | Process for the production of a one-sided highly doped pn junction for emitter zones by alloying aluminum and another wetting metal in a germanium single crystal | |
DE2013830A1 (en) | Etching semi-conductors with acid soln having | |
DE1287404B (en) | Process for preparing silicon bodies for doping by etching | |
DE753116C (en) | Conversion of nitrogen monoxide into nitrogen dioxide | |
DE1043517B (en) | Process for applying a protective coating to the surface of semiconductor devices | |
DE1187803B (en) | Process for purifying germanium | |
DE1053278B (en) | Use of an aqueous solution of a complexing di- or more-basic organic acid for cleaning surfaces | |
DE869051C (en) | Process for the production of nitroform | |
DD206168B1 (en) | AGENTS FOR POLYCRYSTALLINE SILICONE LAYERS | |
DE897451C (en) | Selenium rectifier with bismuth electrode, especially for measuring small AC voltages | |
DE601022C (en) | Production of ammonrhodanide | |
DE765253C (en) | Process for the manufacture of selenium rectifiers | |
DE971357C (en) | Process for the oxidation of the surface of crystalline selenium layers of selenium rectifier plates | |
DE1614760C3 (en) | Semiconductor device | |
AT205551B (en) | Process for the production of a semiconducting electrode system | |
DE1926435C (en) | Device for the production of concentrated nitric acid |