WO2005045941A2 - Verfahren zur herstellung einer antireflektierenden oberfläche auf optischen integrierten schaltkreisen - Google Patents
Verfahren zur herstellung einer antireflektierenden oberfläche auf optischen integrierten schaltkreisen Download PDFInfo
- Publication number
- WO2005045941A2 WO2005045941A2 PCT/DE2004/002340 DE2004002340W WO2005045941A2 WO 2005045941 A2 WO2005045941 A2 WO 2005045941A2 DE 2004002340 W DE2004002340 W DE 2004002340W WO 2005045941 A2 WO2005045941 A2 WO 2005045941A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- integrated circuits
- photodetector
- optical integrated
- produced
- production
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 230000003287 optical effect Effects 0.000 title claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 238000002513 implantation Methods 0.000 claims abstract description 6
- 230000031700 light absorption Effects 0.000 claims abstract description 6
- 238000005530 etching Methods 0.000 claims description 14
- 238000000151 deposition Methods 0.000 claims description 5
- 230000008021 deposition Effects 0.000 claims description 4
- 238000003631 wet chemical etching Methods 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000000059 patterning Methods 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000011982 device technology Methods 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 8
- 238000000407 epitaxy Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000003667 anti-reflective effect Effects 0.000 description 3
- 238000001312 dry etching Methods 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- OEYIOHPDSNJKLS-UHFFFAOYSA-N choline Chemical compound C[N+](C)(C)CCO OEYIOHPDSNJKLS-UHFFFAOYSA-N 0.000 description 1
- 229960001231 choline Drugs 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Classifications
-
- 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
- H01L31/02—Details
- H01L31/0236—Special surface textures
- H01L31/02363—Special surface textures of the semiconductor body itself, e.g. textured active layers
-
- 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
- H01L31/02—Details
- H01L31/0236—Special surface textures
-
- 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
Definitions
- the invention relates to a method for producing an antireflecting surface on optical integrated circuits for improving the absorption of light in photodetectors.
- Such photodetectors such as PIN photodiodes, consist of a cathode (n-region), an isolation (i-region) and an anode (p-region). This structure is fabricated on a substrate, such as an Si substrate, by a first implant, epitaxy, and a second implant.
- the required refractive indices can not be realized or are not available in semiconductor production.
- ARC layers in particular for multilayers, a certain attenuation of the incident light can not be avoided.
- ARC layers and micropyramides are described in "Silicon Solar Cells, Advanced Principles and Practice," Martin A. Green, published by the Center for Photovoltaic Devices and Systems, University of New South Wales, Sydney, Printed by Bridge Printery Pty , March 1995.
- micropyramids on the surface of the photodetector can be realized by selective etching by exposing the (111) crystal planes so that pyramids arise with square bases.
- this document also describes the use of inverted pyramids (ie, pyramidal pyramids) to enhance the absorption of light in the photodetector.
- inverted pyramids ie, pyramidal pyramids
- the production of such inverted pyramids is associated with considerable expense, so that this variant is not suitable for practical use.
- the invention is based on the object, a realizable with little effort and thus low cost
- the object underlying the invention is achieved in that a regular hard-mask grating is produced photolithographically on the surface of the photodetector, that subsequently a structure etching step is carried out to a predetermined depth into the silicon and that the anode or cathode interrupted during the etching of the photodetector is restored by a further implantation step.
- the pattern etching step is preferably carried out by anisotropic, wet-chemical etching, wherein a dry etching may also be considered.
- the pattern etching step generates regularly distributed depressions (trenches) having a depth of about 0.5 ⁇ m to 5 ⁇ m, which have more acute angles than pyramids with (111) faces, or preferably inverse pyramids.
- the hard mask (hard mask) is further photolithographically structured in such a way that these web widths of 0.5 .mu.m and mesh openings with a width of 0.5 .mu.m to 5 .mu.m having.
- the hard mask is preferred by SiO 2
- This method is compatible with bipolar, CMOS or BiCMOS technology for ICs and single devices.
- the pyramids produced by the method according to the invention form such angles to the vertically incident light that a large part is absorbed by reflection and refraction independently of the wavelength in the silicon.
- the effective light path is extended by the multiple refraction at the pyramids compared to the vertical light incident on planar surfaces.
- the epitaxy thickness can be reduced, thus reducing equipment costs and lead time.
- Another advantage is that the photodetector can be reduced in lateral direction with reduced dimension in the vertical direction, in particular its isolation, and thus can be produced more cheaply.
- the method according to the invention requires only one photolithographic step and is therefore cheap and can be carried out quickly.
- FIG. 1 a schematic representation of a photodetector
- FIG. 2 is a plan view of a photolithographically generated hard mask on the photodetector
- Fig. 1 shows the basic structure of a photodetector consisting of a cathode 1 (n-region), an insulation 2 (i-area) and an anode 3 arranged above (p-area).
- This structure is fabricated on a substrate, such as an Si substrate, by arsenic implantation, epitaxy, and boron implantation.
- This structure is part of a large-area wafer which has been provided with a hard mask 4 by SiO 2 deposition and subsequent photolithography.
- the structuring of the hard mask 4 can be done by conventional dry etching, so that webs 5 with a width of 0.3 .mu.m to 1 .mu.m and mesh openings 6 with a width of 0.5 .mu.m to 5 .mu.m arise.
- a pattern etching step preferably by anisotropic, wet-chemical etching, is carried out, through the regularly distributed recesses (trenches) with a depth of about 1.5 ⁇ m, which have more acute angles than pyramids with (111) faces, or preferably inverse pyramids. the 7 generated.
- the anode 3 Since the anode 3 has been interrupted by the structure etching step, it is restored by a final boron implantation and thus the photodetector is completed.
- a dry etching can also be carried out so that trenches (recesses) with straight walls are formed. With such trenches in place of the inverse pyramids 7 can already achieve a significant improvement in light absorption. Under certain etching conditions, preferably using a crystallographically anisotropically effective etching solution (eg choline, KOH), it is also possible to etch the inverse pyramids 7 into the surface of the silicon.
- a crystallographically anisotropically effective etching solution eg choline, KOH
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/408,618 US7736927B2 (en) | 2003-10-29 | 2006-04-21 | Method for the production of an anti-reflecting surface on optical integrated circuits |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10350643A DE10350643B4 (de) | 2003-10-29 | 2003-10-29 | Verfahren zur Herstellung einer antireflektierenden Oberfläche auf optischen integrierten Schaltkreisen |
DE10350643.8 | 2003-10-29 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/408,618 Continuation US7736927B2 (en) | 2003-10-29 | 2006-04-21 | Method for the production of an anti-reflecting surface on optical integrated circuits |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005045941A2 true WO2005045941A2 (de) | 2005-05-19 |
WO2005045941A3 WO2005045941A3 (de) | 2005-09-01 |
Family
ID=34559249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002340 WO2005045941A2 (de) | 2003-10-29 | 2004-10-20 | Verfahren zur herstellung einer antireflektierenden oberfläche auf optischen integrierten schaltkreisen |
Country Status (4)
Country | Link |
---|---|
US (1) | US7736927B2 (de) |
CN (1) | CN100452443C (de) |
DE (1) | DE10350643B4 (de) |
WO (1) | WO2005045941A2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1965439A2 (de) * | 2007-02-28 | 2008-09-03 | Centrotherm Photovoltaics Technology GmbH | Verfahren zur Oberflächentexturierung |
US8058086B2 (en) | 2005-10-10 | 2011-11-15 | X-Fab Semiconductor Foundries Ag | Self-organized pin-type nanostructures, and production thereof on silicon |
US8350209B2 (en) | 2005-10-10 | 2013-01-08 | X-Fab Semiconductor Foundries Ag | Production of self-organized pin-type nanostructures, and the rather extensive applications thereof |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010104520A1 (en) | 2009-03-13 | 2010-09-16 | Hewlett-Packard Development Company, L.P. | Broad band structures for surface enhanced raman spectroscopy |
US8946839B1 (en) | 2009-08-20 | 2015-02-03 | Hrl Laboratories, Llc | Reduced volume infrared detector |
US7977637B1 (en) | 2009-08-20 | 2011-07-12 | Hrl Laboratories, Llc | Honeycomb infrared detector |
US7928389B1 (en) | 2009-08-20 | 2011-04-19 | Hrl Laboratories, Llc | Wide bandwidth infrared detector and imager |
US10903261B1 (en) | 2013-03-15 | 2021-01-26 | Hrl Laboratories, Llc | Triple output, dual-band detector |
US9490292B1 (en) | 2013-03-15 | 2016-11-08 | Hrl Laboratories, Llc | Dual-band detector array |
DE102016105866B3 (de) | 2016-03-31 | 2017-07-06 | Technische Universität Bergakademie Freiberg | Siliziumwafer, Verfahren zum Strukturieren eines Siliziumwafers und Solarzelle |
US10020331B1 (en) | 2016-07-21 | 2018-07-10 | Hrl Laboratories, Llc | Dual-band lateral-effect position sensor |
CN109378363A (zh) * | 2018-11-27 | 2019-02-22 | 淮阴工学院 | 一种制备具有正金字塔/倒金字塔复合结构硅片的方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2952431A1 (de) * | 1979-12-27 | 1981-07-02 | Solarex Corp., 14001 Rockville, Md. | Solarzelle und verfahren zu ihrer herstellung |
US6147297A (en) * | 1995-06-21 | 2000-11-14 | Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Solar cell having an emitter provided with a surface texture and a process for the fabrication thereof |
US20020000244A1 (en) * | 2000-04-11 | 2002-01-03 | Zaidi Saleem H. | Enhanced light absorption of solar cells and photodetectors by diffraction |
Family Cites Families (14)
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EP0067566A3 (de) * | 1981-06-13 | 1985-08-07 | Plessey Overseas Limited | Integrierter Lichtdetektor oder -generator mit Verstärker |
US4378460A (en) * | 1981-08-31 | 1983-03-29 | Rca Corporation | Metal electrode for amorphous silicon solar cells |
US4847210A (en) * | 1988-08-05 | 1989-07-11 | Motorola Inc. | Integrated pin photo-detector method |
US5410175A (en) * | 1989-08-31 | 1995-04-25 | Hamamatsu Photonics K.K. | Monolithic IC having pin photodiode and an electrically active element accommodated on the same semi-conductor substrate |
US5598022A (en) * | 1990-08-31 | 1997-01-28 | Hamamatsu Photonics K.K. | Optical semiconductor device |
JPH0643482A (ja) * | 1992-07-24 | 1994-02-18 | Matsushita Electric Ind Co Ltd | 空間光変調素子およびその製造方法 |
EP0742959B1 (de) * | 1993-07-29 | 2001-11-14 | Gerhard Willeke | Verfahren zur Herstellung einer Solarzelle, sowie nach diesem verfahren hergestellte Solarzelle |
US6027956A (en) * | 1998-02-05 | 2000-02-22 | Integration Associates, Inc. | Process for producing planar dielectrically isolated high speed pin photodiode |
US6303967B1 (en) * | 1998-02-05 | 2001-10-16 | Integration Associates, Inc. | Process for producing an isolated planar high speed pin photodiode |
US6458619B1 (en) * | 1998-02-05 | 2002-10-01 | Integration Associates, Inc. | Process for producing an isolated planar high speed pin photodiode with improved capacitance |
AU751353B2 (en) * | 1998-07-03 | 2002-08-15 | Canon Kabushiki Kaisha | Crystal growth process, semiconductor device, and its production process |
US6753214B1 (en) * | 2001-02-16 | 2004-06-22 | Optical Communication Products, Inc. | Photodetector with isolation implant region for reduced device capacitance and increased bandwidth |
JP2003224253A (ja) * | 2002-01-31 | 2003-08-08 | Sanyo Electric Co Ltd | 光半導体集積回路装置およびその製造方法 |
CN1188914C (zh) * | 2002-11-25 | 2005-02-09 | 厦门大学 | InGaAs/InP PIN光电探测器及其制造工艺 |
-
2003
- 2003-10-29 DE DE10350643A patent/DE10350643B4/de not_active Expired - Fee Related
-
2004
- 2004-10-20 CN CNB2004800320305A patent/CN100452443C/zh not_active Expired - Fee Related
- 2004-10-20 WO PCT/DE2004/002340 patent/WO2005045941A2/de active Application Filing
-
2006
- 2006-04-21 US US11/408,618 patent/US7736927B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2952431A1 (de) * | 1979-12-27 | 1981-07-02 | Solarex Corp., 14001 Rockville, Md. | Solarzelle und verfahren zu ihrer herstellung |
US6147297A (en) * | 1995-06-21 | 2000-11-14 | Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Solar cell having an emitter provided with a surface texture and a process for the fabrication thereof |
US20020000244A1 (en) * | 2000-04-11 | 2002-01-03 | Zaidi Saleem H. | Enhanced light absorption of solar cells and photodetectors by diffraction |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8058086B2 (en) | 2005-10-10 | 2011-11-15 | X-Fab Semiconductor Foundries Ag | Self-organized pin-type nanostructures, and production thereof on silicon |
US8350209B2 (en) | 2005-10-10 | 2013-01-08 | X-Fab Semiconductor Foundries Ag | Production of self-organized pin-type nanostructures, and the rather extensive applications thereof |
EP1965439A2 (de) * | 2007-02-28 | 2008-09-03 | Centrotherm Photovoltaics Technology GmbH | Verfahren zur Oberflächentexturierung |
EP1965439A3 (de) * | 2007-02-28 | 2010-03-24 | Centrotherm Photovoltaics Technology GmbH | Verfahren zur Oberflächentexturierung |
Also Published As
Publication number | Publication date |
---|---|
DE10350643A1 (de) | 2005-06-16 |
CN1875490A (zh) | 2006-12-06 |
WO2005045941A3 (de) | 2005-09-01 |
DE10350643B4 (de) | 2008-12-04 |
US7736927B2 (en) | 2010-06-15 |
US20060251995A1 (en) | 2006-11-09 |
CN100452443C (zh) | 2009-01-14 |
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