EP2489080A2 - Halbleiter-photodetektor und strahlungsdetektorsystem - Google Patents
Halbleiter-photodetektor und strahlungsdetektorsystemInfo
- Publication number
- EP2489080A2 EP2489080A2 EP10790888A EP10790888A EP2489080A2 EP 2489080 A2 EP2489080 A2 EP 2489080A2 EP 10790888 A EP10790888 A EP 10790888A EP 10790888 A EP10790888 A EP 10790888A EP 2489080 A2 EP2489080 A2 EP 2489080A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- doping zone
- doping
- zone
- additional
- region
- 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.)
- Withdrawn
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 75
- 230000005855 radiation Effects 0.000 title claims description 15
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 238000005036 potential barrier Methods 0.000 claims abstract description 11
- 238000005476 soldering Methods 0.000 claims description 6
- 239000000969 carrier Substances 0.000 abstract 1
- 239000002800 charge carrier Substances 0.000 description 13
- 230000003628 erosive effect Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009897 systematic effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 238000012549 training Methods 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
- H01L31/107—Devices sensitive to infrared, visible or ultraviolet radiation characterised by only one potential barrier the potential barrier working in avalanche mode, e.g. avalanche photodiodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/1443—Devices controlled by radiation with at least one potential jump or surface barrier
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components 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
- H01L27/144—Devices controlled by radiation
- H01L27/1446—Devices controlled by radiation in a repetitive configuration
Definitions
- the invention relates to new technologies in the field of semiconductor photodetectors. Background of the invention
- Semiconductor photodetectors which use the so-called avalanche effect for signal amplification, have regions of high electric field strength in a near-surface region of the semiconductor substrate, with the aid of which charge carriers, which are generated due to radiation absorption in the semiconductor substrate and pass through the region of high electric field strength, are multiplied become.
- the regions of high electric field strength are generated, for example, by generating doping zones assigned to one another in the semiconductor substrate of the photodetector, which are doped correspondingly to different doping types.
- such semiconductor photodetectors are operated with a bias voltage which is above that for a permanent breakdown of the component structures.
- a bias voltage which is above that for a permanent breakdown of the component structures.
- thermally generated charge carriers or charge carriers generated on the basis of radiation absorption penetrate into the region of high field strength and are multiplied there due to avalanche avalanche breakdown, whereby a high current is conducted between the electrical connections or contacts of the semiconductor device. Photodetector arises.
- the document DE 10 2007 037 020 B3 discloses an avalanche photodiode for the detection of radiation.
- the object of the invention is to provide new technologies for semiconductor photodetectors, with which on the one hand optimized utilization of the active detector surface and, on the other hand, a photodetector structure which is as simple to produce and configure as possible are made possible.
- the dependence of the semiconductor photodetector on specific material parameters and structural properties should be reduced.
- the invention includes the idea of a semiconductor photodetector with:
- soldering resistance region formed in the semiconductor substrate between the lower doping zone and a contacting layer formed on the backside of the semiconductor substrate
- a first additional doping zone doped according to the first doping type is arranged in the semiconductor substrate in the region between the lower doping zone and the contacting layer, extending laterally below the at least one intermediate region and into the region below the lower doping zone and in the region is interrupted below the lower doping zone, and
- a second additional doping zone doped according to the second doping type is arranged in the semiconductor substrate in the region between the lower doping zone and the first additional doping zone, below the at least one Lateral extends laterally and forms a potential barrier between the upper doping zone and the first additional doping zone.
- the invention provides a radiation detector system comprising the following features: a semiconductor photodetector of the aforementioned type, wherein at least one of the first additional doping zone associated contact terminal is formed and a control circuit which is coupled to the at least one contact terminal and configured, to provide a control signal for a drive potential to be applied to the first additional doping zone.
- a first and a second additional doping zone are provided in the semiconductor photodetector below the avalanche regions, which are doped correspondingly to different doping types.
- the second additional doping zone serves to form a potential barrier between the upper doping zone of the avalanche region and the first additional doping zone. Because of this decoupling, it is possible to independently and individually adjust the erasure resistance by applying a corresponding drive potential to the first additional doping zone (subgate doping zone).
- the avalanche regions together with the non-active regions between them form a contiguous detector surface of the semiconductor photodetector.
- the avalanche areas form in so far so-called pixel elements of the detector surface.
- Such a pixel element may be associated with one or more lower doping zones.
- the first additional doping zones arranged below the detector surface form a network of so-called subgate electrodes.
- the structural design of the semiconductor photodetector with the additional doping zones makes the operation of the detector independent of manufacturing Material and structure designs such as layer thickness, doping concentrations, layout tolerances or other parameter variations. Even fluctuating temperature influences can be compensated. Different potentials can be applied to the upper doping zone of the avalanche region and the first additional doping zone, although both doping zones are doped correspondingly to the same doping type. This makes it possible to set the avalanche operating point and the extinguishing resistor required for deleting the charge avalanche separately.
- the invention makes it possible to operate even smaller detector structures functionally, so that the yield of functioning detector structures is increased on a wafer. Large and very large-scale functioning structures are thus made possible in the first place. Utilization of larger area devices allows the integration of arrays with an interrupted top doping zone.
- a preferred embodiment of the invention provides that the second additional doping zone extends laterally at least over the entire width of the at least one intermediate region.
- the second additional doping zone extends over the entire region of the at least one intermediate region, which is formed in the lateral direction between the sections of the lower doping zone.
- the second additional doping zone may optionally extend into the region below the lower doping zone.
- the second additional doping zone is formed as a continuous doping zone which is depleted in the at least one intermediate region.
- the production of the continuous doping for the second additional doping zone is possible in this embodiment by means of maskless production. It can therefore be dispensed with the use of masks in the doping.
- An advantageous embodiment of the invention provides for a contact connection assigned to the first additional doping zone, via which a control circuit can be connected to the first additional doping zone. In a further development, a plurality of such contact terminals are formed, which are each assigned to one or more first additional doping zones.
- the first additional doping zone formed deeper than the second additional doping zone in the semiconductor substrate and corresponding to the above embodiments may also be used Subgate doping zone can be designated, a drive potential can be applied. When providing multiple contact connections, these can be subjected to different potentials. In this way, in one embodiment it is even possible for different potentials to be applied to a plurality of first additional doping zones which are assigned to a common pixel element. In an expedient embodiment, a plurality of separate contact connections for the first additional doping zones are produced at the edge of the detector surface formed by the field of the pixel elements, that is to say still within and / or already outside the detector surface.
- the invention also includes methods for operating the semiconductor photodetector, wherein at contact terminals, the first additional Doping zones are assigned, systematic error correcting potentials are applied.
- a development of the invention provides that the contact connection is formed with an external contact and conductive overlapping doping zones, which are doped according to the first doping type.
- the formation of the conductive overlapping doping zones can be carried out, for example, with the aid of a mesa structure or a V-groove etching and subsequent doping on the surface.
- the use of technologies in conjunction with areas of appropriate width filled with doped polysilicon may also be provided. It is sufficient in this connection to provide only one contact terminal for the first additional doping zone, since it extends in a planar manner in the semiconductor substrate, wherein it has recesses opposite the avalanche areas.
- the contact terminal is formed outside a detector surface.
- the contact connection is preferably formed on the edge of the detector surface, that is to say adjacent to the surface which is occupied by the avalanche regions defining the pixel elements and the regions formed between them.
- a further development of the invention provides a further contact connection assigned to the lower doping zone, via which a control circuit can be connected to the lower doping zone.
- a control circuit which can be coupled to the further contact connection is preferably designed to measure the extinguishment resistance for the soldering resistor region. If the control circuit implemented in this way is combined with the circuit for applying the drive potential via the contact connection to the first additional doping zone, a control possibility for the drive potential is created such that this can be adjusted and regulated as a function of the measured extinguish resistance.
- a preferred embodiment of the invention provides that the further contact connection is formed with a further external contact and a doping zone, which corresponds to the second Doping type is doped accordingly.
- the explanations given in connection with the associated version of the contact connection apply accordingly.
- the further contact connection is formed within the detector surface in an interrupted region of the upper doping zone.
- An advantageous embodiment of the invention provides that the further contact connection is arranged substantially centrally to an associated Löschwiderstands SB.
- a further contact connection assigned to the lower doping zone is formed on the semiconductor photodetector and the control circuit is coupled to the further contact connection and is further configured to provide a measured value for the soldering resistance of the Detect semiconductor photodetector and derived therefrom to provide the control signal to be applied to the first additional doping zone drive potential.
- FIG. 1 is a schematic representation of a portion of a known semiconductor photodetector in cross-section
- FIG. 2 shows a schematic representation of a section of a semiconductor photodetector with additional doping zones in cross section
- FIG. 3 shows a schematic representation of a section of a semiconductor photodetector with additional doping zones in cross-section, wherein a second additional doping zone is formed interrupted
- 4 shows a schematic illustration of a section of the semiconductor photodetector according to FIG. 3, wherein a contact connection is formed for one of the additional doping zones
- FIG. 5 shows a schematic representation of a section of a semiconductor photodetector with additional doping zones in cross section, wherein the contact connection for the additional doping zone is formed in FIG. 4 in a modified embodiment
- FIG. 6 is a schematic representation of a portion of a semiconductor photodetector with additional doping zones in cross-section, wherein a further contact terminal for a lower doping zone of the avalanche region is formed,
- Figure 7 is a schematic representation of a portion of a photodetector system in cross-section, in which between a lower doping zone of the Avalansche region and an additional doping zone, a control circuit is coupled, and
- Fig. 8 is a schematic representation of a portion of a detector surface of a semiconductor photodetector.
- Fig. 1 shows a schematic representation of a portion of a known semiconductor photoreceptor in cross section.
- an upper doping zone 3 is laterally extending and formed continuously on a top side 2.
- the upper doping zone 3 is doped correspondingly to a first doping type, which is a p-type doping or an n-type doping. Without restricting the generality, it is assumed in the following that in the illustrated exemplary embodiment it is a p-doping.
- a lower doping zone 4 is formed, which is laterally extending and formed interrupted in intermediate regions 5.
- the lower doping zone 4 is doped according to a second doping type, which is different from the first doping type. In the selected embodiment, this means that the lower doping zone 4 is provided with an n-doping.
- a region of high field strength 6 is formed, which leads to the so-called avalanche effect in radiation detection in the semiconductor photodetector and can therefore also be referred to as avalanche region.
- the region of high field strength 6 takes place after the generation of Charge carriers due to radiation absorption, in particular individual photons, an avalanche-like multiplication.
- a contacting layer 8 is produced by means of n-doping.
- the backside contact layer 8 may be disposed directly or via one or more layers on a carrier substrate (not shown).
- an erosion resistor region 9 extends, which is doped with respect to charge carriers around a depleted region of the substrate 1, which in turn is doped accordingly to the second doping type in the selected embodiment corresponds to an n-doping is.
- the Löschwiderstands Schemee 9 and the depletion zones 10 are formed during operation of the semiconductor photodetector upon application of a working voltage, such that at the operating point the Löschwiderstands Schemee 9 are still conductive, whereas the depletion zones 10 are gigaohmig. Together with the lower doping zones 4 creates a spatial structure that is mushroom-like or cylindrically symmetric.
- FIGS. 2 to 7 For the same features in Figs. 2 to 8, the same reference numerals as in Fig. 1 are used.
- FIG. 2 shows a schematic representation of a section of a semiconductor photodetector in cross-section, which has additional doping zones in the substrate 1 in comparison with the known detector in FIG. 1.
- a first additional doping zone 11 is provided, which is doped correspondingly to the first doping type, which corresponds to a p-type doping in the exemplary embodiment chosen here.
- the first additional doping zone 11 is arranged laterally in the substrate 1 in the region between the lower doping zone 4 and the contacting layer 8.
- the first additional doping zone 11 is interrupted in a region below the lower doping zone 4.
- the depletion zone extends 10.
- the Portions of the first additional doping zone 11 detect in the lateral direction at least the region of the intermediate region 5 and extend below the lower doping zone 4.
- a second additional doping zone 12 is additionally provided, which is doped correspondingly to the second doping type, which corresponds to an n-doping in the selected exemplary embodiment.
- the second additional doping zone 12 is formed in the substrate 1 in a region comprising the lower doping zone 4 and the first additional doping zone 11 and the region between them.
- the second additional doping zone 12 is produced overlapping the lower doping zone 4.
- the illustration in FIG. 2 shows that the second additional doping zone 12 is lateral is not limited, but rather extends continuously.
- the second additional doping zone 12 is completely depleted in respect of the charge carriers in the intermediate region 5 lying between the avalanche areas 6, so that a separation of the avalanche areas 6 and insofar as a separation of pixel elements of the detector surface of the semiconductor photodetector is ensured.
- the second additional doping zone 12 forms a potential barrier between the upper doping zone 3 and the first additional doping zone 11, so that these two doping zones can be connected to different electrical potentials.
- control of the avalanche breakdown in the region of high electric field strength 6 is made possible independently of the setting of the erase resistance in the erosion resistance region 9.
- the dashed line 13 symbolizes the center of the avalanche region 6, that is, an associated pixel element.
- these areas can be designed, for example, circular or hexagonal.
- Fig. 3 shows a schematic representation of a portion of a semiconductor photodetector in cross-section, which like the detector in Fig. 2 via a first and a second additional Doping zone 11, 12 has, wherein in contrast to the embodiment in Fig. 2, the second additional doping zone 12 is laterally limited, such that it extends exclusively in the intermediate region 5 and thereby the region of the lower doping zone 4 is not detected laterally , In this embodiment too, the second additional doping zone 12 depletes in the intermediate region 5 and forms the potential barrier between the upper doping zone 3 and the first additional doping zone 11.
- FIG. 4 shows a schematic representation of a semiconductor photodetector in cross section, in which the first additional doping zone 11 is connected to a contact terminal 20, which in the illustrated embodiment is formed with conductive overlapping doping zones 21, 23 and an external contact 24.
- a contact terminal 20 which in the illustrated embodiment is formed with conductive overlapping doping zones 21, 23 and an external contact 24.
- the conductive overlapping doping zones 21, ..., 23 are doped according to the first doping type, which corresponds to a p-type doping in the selected embodiment.
- the connection contact 20 is electrically insulated from the upper doping zone 3 and, in the illustrated embodiment, is located outside the active detector surface, which is formed by the pixel elements assigned to the avalanche regions 6 and the non-active intermediate regions 5 located between them.
- a single contact terminal 20 is basically sufficient, since the first additional doping zone 11 extends laterally coherently in the area, wherein recesses are formed below the avalanche areas 6. Since the upper doping zone 3 and the first additional doping zone 11 are separated or decoupled by means of the potential barrier provided by the second additional doping zone 12, a different potential can be connected via the contact terminal 20 to the first additional doping zone 11 than to the upper doping zone 3 In this way it is possible to independently control each other.
- FIG. 5 shows a schematic representation of a section of a semiconductor photodetector in cross section, wherein the contact terminal 20 for the first additional doping zone 11 in FIG. 4 is formed in a modified embodiment.
- two of the conductive overlapping doping zones 21, 22 are omitted.
- the potential of the first additional doping zone 11 can be controlled via the contact terminal 20. Since no direct potential barrier is formed between the doping zone 23 and the associated first additional doping zone 11 in a semiconductor region 25, a potential increase at the external contact 24 causes charge carriers from the associated first additional doping zone 11 to flow via the semiconductor region 25 into the doping zone 23, where the potential of the associated first additional doping zone 11 is also increased quite rapidly.
- the reverse case of a potential reduction is a very slow process, since in this case a two-dimensional potential barrier is formed between the doping zone 23 and the first additional doping zone 11, which severely impedes direct charge carrier exchange.
- the potential of the first additional doping zone 11 initially remains at a set value and is changed as long as the light or dark-generated charge carriers flowing into the region around the first additional doping zone 11 up to the space charge width until the two-dimensional potential barrier has been reduced. Charge carriers flowing further into this area flow toward the doping zone 23. The potential of the first additional doping zone 11 then substantially does not change its value any further.
- FIG. 6 shows a schematic representation of a section of a semiconductor photodetector in cross-section, in which a further contact connection 30 is formed in the region of the upper side 2 of the substrate 1, which is in contact with the lower doping zone 4 of a single pixel.
- the upper doping zone 3 is interrupted.
- the further contact connection 30 is produced with a contact connection doping zone 31 and an external contact 32. The lateral distance between the top doping zone 3 and the contact terminal doping zone 31 is sufficient to prevent avalanche breakdown between the two doping zones.
- a control circuit 40 which can be used in particular for operating point stabilization.
- a current is fed into the further contact connection 30 by means of a current source 42.
- a voltage difference between the further contact terminal 30 and the potential at the rear-side contacting layer 8 now arises.
- This voltage difference is evaluated by the control circuit 40 and converted into an associated control signal for the potential at the first additional doping zones 11.
- the design is possible as a bridge circuit without power source.
- the control circuit 40 is always configured so that the erosion resistance can be measured and derived therefrom, a control signal for the potential at the first additional doping zone 11 can be provided.
- FIG. 8 shows a schematic representation of a detector surface 70 for a semiconductor photodetector with individual pixel elements 71 and non-active regions 72 formed between them.
- the further contact connection 30 is established, which is connected to the edge via a contact 73 ,
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Light Receiving Elements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009049793A DE102009049793B3 (de) | 2009-10-16 | 2009-10-16 | Halbleiter-Photodetektor und Strahlungsdetektorsystem |
PCT/DE2010/075108 WO2011044896A2 (de) | 2009-10-16 | 2010-10-13 | Halbleiter-photodetektor und strahlungsdetektorsystem |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2489080A2 true EP2489080A2 (de) | 2012-08-22 |
Family
ID=43705896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10790888A Withdrawn EP2489080A2 (de) | 2009-10-16 | 2010-10-13 | Halbleiter-photodetektor und strahlungsdetektorsystem |
Country Status (4)
Country | Link |
---|---|
US (1) | US8796802B2 (de) |
EP (1) | EP2489080A2 (de) |
DE (1) | DE102009049793B3 (de) |
WO (1) | WO2011044896A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012103699A1 (de) * | 2012-02-15 | 2013-08-22 | First Sensor AG | Halbleiterstruktur für einen Strahlungsdetektor sowie Strahlungsdetektor |
US20140159180A1 (en) * | 2012-12-06 | 2014-06-12 | Agency For Science, Technology And Research | Semiconductor resistor structure and semiconductor photomultiplier device |
EP3309847B1 (de) * | 2016-10-13 | 2024-06-05 | Canon Kabushiki Kaisha | Fotodetektionsvorrichtung und fotodetektionssystem |
JP6701135B2 (ja) * | 2016-10-13 | 2020-05-27 | キヤノン株式会社 | 光検出装置および光検出システム |
CN111682086A (zh) * | 2020-07-23 | 2020-09-18 | 云南大学 | 一种自由运行模式下的负反馈雪崩光电二极管 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59114875A (ja) * | 1982-12-21 | 1984-07-03 | Fuji Electric Corp Res & Dev Ltd | 半導体放射線検出器 |
JPH0666412B2 (ja) * | 1989-05-16 | 1994-08-24 | 三菱電機株式会社 | 積層型半導体集積回路 |
JP2006080427A (ja) * | 2004-09-13 | 2006-03-23 | Univ Of Tokyo | 半導体発光素子 |
WO2008011617A2 (en) * | 2006-07-21 | 2008-01-24 | The Regents Of The University Of California | Shallow-trench-isolation (sti)-bounded single-photon avalanche photodetectors |
DE102007037020B3 (de) * | 2007-08-06 | 2008-08-21 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Avalanche-Photodiode |
-
2009
- 2009-10-16 DE DE102009049793A patent/DE102009049793B3/de not_active Expired - Fee Related
-
2010
- 2010-10-13 US US13/501,939 patent/US8796802B2/en not_active Expired - Fee Related
- 2010-10-13 EP EP10790888A patent/EP2489080A2/de not_active Withdrawn
- 2010-10-13 WO PCT/DE2010/075108 patent/WO2011044896A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011044896A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2011044896A3 (de) | 2011-10-27 |
DE102009049793B3 (de) | 2011-04-07 |
US8796802B2 (en) | 2014-08-05 |
WO2011044896A2 (de) | 2011-04-21 |
US20120248562A1 (en) | 2012-10-04 |
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