WO1998056045A1 - Spannungsgesteuerter wellenlängenselektiver photodetektor - Google Patents
Spannungsgesteuerter wellenlängenselektiver photodetektor Download PDFInfo
- Publication number
- WO1998056045A1 WO1998056045A1 PCT/EP1998/003089 EP9803089W WO9856045A1 WO 1998056045 A1 WO1998056045 A1 WO 1998056045A1 EP 9803089 W EP9803089 W EP 9803089W WO 9856045 A1 WO9856045 A1 WO 9856045A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- wavelength
- detector
- diode
- selective photodetector
- Prior art date
Links
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 6
- 229910008310 Si—Ge Inorganic materials 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- 238000001228 spectrum Methods 0.000 abstract description 2
- 230000001131 transforming effect Effects 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000023077 detection of light stimulus Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000003595 spectral effect Effects 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
- H01L31/08—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 in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—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 in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
- H01L31/101—Devices sensitive to infrared, visible or ultraviolet radiation
- H01L31/102—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier
- H01L31/108—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier the potential barrier being of the Schottky type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- 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
- H01L31/0248—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 characterised by their semiconductor bodies
- H01L31/0352—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 characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035236—Superlattices; Multiple quantum well structures
- H01L31/035254—Superlattices; Multiple quantum well structures including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table, e.g. Si-SiGe superlattices
-
- 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
- Y02E10/548—Amorphous silicon PV cells
Definitions
- the invention relates to a voltage-controlled wavelength-selective photodetector according to the preamble of patent claim 1 and a method for its use according to the preamble of patent claim 11.
- Voltage-controlled wavelength-selective photodetectors can be used in optoelectronic converters, in signal processing and for logic switching networks. From a publication (Friedmann et al. In compound semiconductor, page 27, Nov. / Dec. 1996) photodetectors made of compound semiconductors are known which are used in two wavelength operation. In addition, a photodetector is described in a patent application (AZ 197 14 054) filed before the filing date but subsequently published, which is constructed from at least two stacked photodiodes made of the semiconductor material silicon / silicon germanium (Si / SiGe). These detectors are used, for example, in solar cells with the aim of generating the highest possible photocurrent by adding the charges generated in the individual detectors. The use of different bears
- Semiconductor materials help to achieve high spectral sensitivity in addition to high efficiency.
- the individual photocurrents generated in the detectors always overlap additively.
- the detection of light signals with several photodetectors is thus used, but not the possibility of signal processing by subtracting the photocurrents.
- the invention is therefore based on the object of specifying an inexpensive, monolithically highly integrable photodetector which opens up a broad spectrum for signal conversion through wavelength selectivity and can be used in particular to improve the signal / noise ratio of an optical signal.
- the invention is represented by the features of claims 1 and 11. The further claims contain advantageous refinements and developments of the invention.
- the photodetector according to the invention is constructed from a double diode which consists of an Si Schottky diode which is polarized against one another and of an SiGe PIN diode.
- the short-wave portion ( ⁇ ⁇ 0.9 ⁇ m) of light entering the detector through a window preferably generates electron-hole pairs in the Si Schottky detector, while the longer-wave portion (l ⁇ m ⁇ ⁇ 2 ⁇ m) passes through the substrate and in the epitaxially deposited SiGe Superlattice or the quantum well diode is preferably absorbed.
- the photocurrents of both detectors flow physically in opposite directions and subtract, so that this leads to a wavelength-dependent sign of the photocurrent.
- the level of the applied bias voltage decides whether the photocurrent of the Si Schottky diode or the photocurrent of the Si / Ge PIN diode determines the spectrum.
- the layer structure shown is deposited on a lightly p-doped Si semiconductor substrate 1, for example by means of molecular beam epitaxy.
- the layer structure consists of a graded SiGe buffer 2, a thickness of approximately 650 nm, with a final Ge concentration of, for example, 60 atom percent, a constant SiGe buffer 3, a thickness of approximately 500 nm, preferably with a final Ge concentration of the graded buffer 2 corresponding Ge concentration of 60 atom percent an n-doped Si-Ge superlattice 4 with a thickness of approximately 200 nm, consisting of a periodically repeating
- the detector areas are electrically isolated from the surrounding semiconductor material, for example by silicon dioxide or trench etching.
- the metallization of the substrate-side first contact 6, including the window 8, and the second metal contact 7 on the epitaxial layer, which acts as a Schottky contact, is also structured using standard semiconductor process technology.
- the second metal contact 7 forms an ohmic contact due to the high doping of the thin cover layer 5.
- Curve course of the photocurrent as a function of the incident light wavelength Depending on the bias bias of the detector, either one results Photocurrent 10 from the silicon diode or a photocurrent 11 from the PIN SiGe diode in the event that the voltage is chosen to be so high, for example ⁇ 1 V, that one of the two diodes always switches through and the other is operated in the blocking region.
- the dynamic behavior of the detector used in the operating state arises for bias voltages that lie between the limits ⁇ 1 V.
- the curves are entered in Fig. 4 for some intermediate values. With a suitably selected bias voltage, for example for 0.2V, the curve has both positive and negative values depending on the wavelength. For example, this can be used in an application to decode signals as follows.
- the useful signal S can thus be separated from the noise level very easily.
- 5 shows the signal / noise ratio (S / N) of a useful signal S which has been processed by decoding.
- the course of the curve proves in this example that the signal / noise ratio is considerably increased by this method by superimposing the signals in the range of the selected wavelengths ⁇ and ⁇ 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/445,172 US6342720B1 (en) | 1997-06-03 | 1998-05-26 | Voltage-controlled wavelength-selective photodetector |
EP98928319A EP0986827A1 (de) | 1997-06-03 | 1998-05-26 | Spannungsgesteuerter wellenlängenselektiver photodetektor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19723177.2 | 1997-06-03 | ||
DE19723177A DE19723177A1 (de) | 1997-06-03 | 1997-06-03 | Spannungsgesteuerter wellenlängenselektiver Photodetektor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998056045A1 true WO1998056045A1 (de) | 1998-12-10 |
Family
ID=7831235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/003089 WO1998056045A1 (de) | 1997-06-03 | 1998-05-26 | Spannungsgesteuerter wellenlängenselektiver photodetektor |
Country Status (4)
Country | Link |
---|---|
US (1) | US6342720B1 (de) |
EP (1) | EP0986827A1 (de) |
DE (1) | DE19723177A1 (de) |
WO (1) | WO1998056045A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1309049A1 (de) * | 2001-11-05 | 2003-05-07 | Agilent Technologies, Inc. (a Delaware corporation) | Wellenlängenempfindliche Vorrichtung zur Wellenlängenstabilisation |
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DE19956946B8 (de) | 1999-11-26 | 2005-01-20 | Tesa Ag | Verpackung für Klebfolien |
DE10055942A1 (de) | 2000-11-10 | 2002-06-06 | Tesa Ag | Haftklebemasse und ihre Verwendung |
DE10139509A1 (de) * | 2000-12-08 | 2002-06-27 | Daimler Chrysler Ag | Silizium Germanium Solarzelle mit hohem Wirkungsgrad |
DE10063854A1 (de) | 2000-12-21 | 2002-09-05 | Tesa Ag | Wiederablösbare Vorrichtung |
DE10064160A1 (de) | 2000-12-22 | 2002-08-14 | Tesa Ag | Klebfolienstreifen |
DE10212049A1 (de) | 2002-03-19 | 2003-10-02 | Tesa Ag | Haftklebemasse und Verfahren zur Herstellung hierzu |
US6646318B1 (en) * | 2002-08-15 | 2003-11-11 | National Semiconductor Corporation | Bandgap tuned vertical color imager cell |
DE10252089A1 (de) | 2002-11-08 | 2004-05-27 | Tesa Ag | Klebemasse und Verwendung derselben für einen Haftklebfolienstreifen aus mindestens einer Schicht, der sich durch dehnendes Verstrecken im wesentlichen in der Verklebungsebene rückstands- und zerstörungsfrei wieder ablösen lässt |
DE10361540A1 (de) * | 2003-12-23 | 2005-07-28 | Tesa Ag | Chemisch vernetzbare, durch Zug in Richtung der Verklebungsebene lösbare Klebestreifen |
DE102006038719A1 (de) | 2006-08-18 | 2008-02-21 | Tesa Ag | Haftklebestreifen für feuchtigkeitsunempfindliche wiederablösbare Verklebungen |
DE102008021740A1 (de) | 2008-04-30 | 2009-11-05 | Tesa Se | Klebemasse aus Ethylenpolymer und Verwendung derselben für einen Haftklebfolienstreifen der sich durch dehnendes Verstrecken im Wesentlichen in der Verklebungsebene rückstands- und zerstörungsfrei wieder ablösen lässt |
DE202013012788U1 (de) | 2012-12-19 | 2019-08-29 | Tesa Se | Wiederablösbarer Haftklebestreifen |
DE102012223670A1 (de) | 2012-12-19 | 2014-06-26 | Tesa Se | Wiederablösbarer Haftklebestreifen |
DE102013206624A1 (de) | 2013-04-15 | 2014-10-16 | Tesa Se | Haftklebemasse und Verwendung derselben in einem Haftklebstreifen |
DE102014208263A1 (de) | 2014-04-30 | 2015-11-05 | Tesa Se | Ablösehilfe für eine wiederablösbare Klebefolie |
DE102014208264A1 (de) | 2014-04-30 | 2015-11-05 | Tesa Se | Hilfsklebeband für eine wiederablösbare Klebefolie |
DE202015009721U1 (de) | 2015-04-02 | 2019-08-23 | Tesa Se | Wiederablösbarer Haftklebestreifen |
EP3581630B1 (de) | 2015-04-02 | 2021-07-14 | tesa SE | Wiederablösbarer haftklebestreifen |
DE202015009724U1 (de) | 2015-04-02 | 2019-08-16 | Tesa Se | Wiederablösbarer Haftklebestreifen |
DE202015009730U1 (de) | 2015-04-02 | 2019-09-06 | Tesa Se | Wiederablösbarer Haftklebestreifen |
DE102015206076A1 (de) | 2015-04-02 | 2016-10-06 | Tesa Se | Wiederablösbarer Haftklebestreifen |
DE102015220065A1 (de) | 2015-10-15 | 2017-04-20 | Tesa Se | Klebemasse, insbesondere für stripbare Klebestreifen, und Verwendung zur Verklebung auf gestrichener Raufasertapete |
DE202015009135U1 (de) | 2015-10-15 | 2016-11-04 | Tesa Se | Selbstklebeartikel und dessen Verwendung zur Verklebung auf gestrichener Raufasertapete |
DE102016223852A1 (de) | 2016-11-30 | 2018-05-30 | Tesa Se | Wiederablösbarer Haftklebestreifen |
DE102017203092A1 (de) | 2017-02-24 | 2018-08-30 | Tesa Se | Wiederablösbarer Haftklebestreifen |
DE102017206083A1 (de) | 2017-04-10 | 2018-10-11 | Tesa Se | Verklebung in elektrochemischen Zellen und Stapeln von elektrochemischen Zellen |
DE102017220998A1 (de) | 2017-11-23 | 2019-05-23 | Tesa Se | Wiederablösbarer Haftklebestreifen |
DE102019204344A1 (de) | 2019-03-28 | 2020-10-01 | Tesa Se | Wiederablösbarer Haftklebestreifen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0682375A1 (de) * | 1994-05-12 | 1995-11-15 | Universita' Degli Studi Di Roma "La Sapienza" | Spannungsgesteuerter Photodetektor mit veränderlichem Spektrum für 2D-Farbbildaufnahmen |
WO1996039719A1 (en) * | 1995-06-05 | 1996-12-12 | The Secretary Of State For Defence | Reflecting semiconductor substrates |
WO1997017719A2 (de) * | 1995-10-17 | 1997-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Halbleiterheterostruktur-strahlungsdetektor, mit zwei spektralen empfindlichkeitsbereichen |
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US4633287A (en) * | 1982-08-09 | 1986-12-30 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor photoelectric conversion device |
JPS6394125A (ja) * | 1986-10-08 | 1988-04-25 | Yamatake Honeywell Co Ltd | カラ−センサ |
US5311047A (en) * | 1988-11-16 | 1994-05-10 | National Science Council | Amorphous SI/SIC heterojunction color-sensitive phototransistor |
US5329136A (en) * | 1993-04-30 | 1994-07-12 | At&T Bell Laboratories | Voltage-tunable photodetector |
CA2127596C (en) * | 1993-07-16 | 2003-12-02 | Hui Chun Liu | Multicolour voltage tunable quantum well intersubband infrared photodetector and associated method |
US5384469A (en) * | 1993-07-21 | 1995-01-24 | The United States Of America As Represented By The Secretary Of The Army | Voltage-tunable, multicolor infrared detectors |
US5459332A (en) * | 1994-03-31 | 1995-10-17 | The United States Of America As Represented By The Secretary Of The Navy | Semiconductor photodetector device |
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FR2756938B1 (fr) * | 1996-12-09 | 1999-01-08 | Alsthom Cge Alcatel | Dispositif, notamment a semiconducteur, pour le traitement de deux ondes, notamment lumineuses |
DE19714054A1 (de) | 1997-04-05 | 1998-10-08 | Daimler Benz Ag | SiGe-Photodetektor mit hohem Wirkungsgrad |
-
1997
- 1997-06-03 DE DE19723177A patent/DE19723177A1/de not_active Withdrawn
-
1998
- 1998-05-26 EP EP98928319A patent/EP0986827A1/de not_active Withdrawn
- 1998-05-26 WO PCT/EP1998/003089 patent/WO1998056045A1/de not_active Application Discontinuation
- 1998-05-26 US US09/445,172 patent/US6342720B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0682375A1 (de) * | 1994-05-12 | 1995-11-15 | Universita' Degli Studi Di Roma "La Sapienza" | Spannungsgesteuerter Photodetektor mit veränderlichem Spektrum für 2D-Farbbildaufnahmen |
WO1996039719A1 (en) * | 1995-06-05 | 1996-12-12 | The Secretary Of State For Defence | Reflecting semiconductor substrates |
WO1997017719A2 (de) * | 1995-10-17 | 1997-05-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Halbleiterheterostruktur-strahlungsdetektor, mit zwei spektralen empfindlichkeitsbereichen |
Non-Patent Citations (3)
Title |
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FANG Y K ET AL: "A VERTICAL-TYPE A-SI:H BACK-TO-BACK SCHOTTKY DIODE FOR HIGH-SPEED COLOR IMAGE SENSOR", IEEE ELECTRON DEVICE LETTERS, vol. 12, no. 4, 1 April 1991 (1991-04-01), pages 172 - 174, XP000177952 * |
MASINI G ET AL: "VOLTAGE TUNABLE SIGE PHOTODETECTOR: A NOVEL TOOL FOR CRYPTED OPTICAL COMMUNICATIONS THROUGH WAVELENGTH MIXING", APPLIED PHYSICS LETTERS, vol. 70, no. 24, 16 June 1997 (1997-06-16), pages 3194 - 3196, XP000658936 * |
PRESTING H: "ULTRATHIN SIMGEN STRAINED LAYER SUPERLATTICES-A STEP TOWARDS SI OPTOELECTRONICS", SEMICONDUCTOR SCIENCE AND TECHNOLOGY, vol. 7, no. 9, 1 September 1992 (1992-09-01), pages 1127 - 1148, XP000335234 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1309049A1 (de) * | 2001-11-05 | 2003-05-07 | Agilent Technologies, Inc. (a Delaware corporation) | Wellenlängenempfindliche Vorrichtung zur Wellenlängenstabilisation |
US6678293B2 (en) | 2001-11-05 | 2004-01-13 | Agilent Technologies, Inc. | Wavelength sensitive device for wavelength stabilization |
Also Published As
Publication number | Publication date |
---|---|
DE19723177A1 (de) | 1998-12-10 |
EP0986827A1 (de) | 2000-03-22 |
US6342720B1 (en) | 2002-01-29 |
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