DE102007044414A1 - Semiconductor component e.g. MOS field effect transistor, has intermediate zones arranged on ditch walls, where intermediate zones are high-impedance with respect to loading compensation zones and drift zones - Google Patents
Semiconductor component e.g. MOS field effect transistor, has intermediate zones arranged on ditch walls, where intermediate zones are high-impedance with respect to loading compensation zones and drift zones Download PDFInfo
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- DE102007044414A1 DE102007044414A1 DE102007044414A DE102007044414A DE102007044414A1 DE 102007044414 A1 DE102007044414 A1 DE 102007044414A1 DE 102007044414 A DE102007044414 A DE 102007044414A DE 102007044414 A DE102007044414 A DE 102007044414A DE 102007044414 A1 DE102007044414 A1 DE 102007044414A1
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 162
- 230000005669 field effect Effects 0.000 title description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 230000000295 complement effect Effects 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 77
- 239000000463 material Substances 0.000 claims description 72
- 238000009792 diffusion process Methods 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 39
- 239000002019 doping agent Substances 0.000 claims description 32
- 229910052710 silicon Inorganic materials 0.000 claims description 26
- 239000010703 silicon Substances 0.000 claims description 26
- 230000000873 masking effect Effects 0.000 claims description 20
- 238000005530 etching Methods 0.000 claims description 17
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims description 15
- 239000011574 phosphorus Substances 0.000 claims description 15
- 230000002401 inhibitory effect Effects 0.000 claims description 13
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 13
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 12
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 11
- 229910052796 boron Inorganic materials 0.000 claims description 11
- 239000012535 impurity Substances 0.000 claims description 11
- 239000012774 insulation material Substances 0.000 claims description 10
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 238000005468 ion implantation Methods 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 8
- 238000007254 oxidation reaction Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 8
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 8
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- 229910052711 selenium Inorganic materials 0.000 claims description 7
- 239000011669 selenium Substances 0.000 claims description 7
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- 239000011593 sulfur Substances 0.000 claims description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000002210 silicon-based material Substances 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 2
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- 238000005229 chemical vapour deposition Methods 0.000 claims 1
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- 239000002800 charge carrier Substances 0.000 description 11
- 229910021426 porous silicon Inorganic materials 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 238000001465 metallisation Methods 0.000 description 8
- 229910052785 arsenic Inorganic materials 0.000 description 5
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 5
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- 238000010276 construction Methods 0.000 description 3
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- 239000000370 acceptor Substances 0.000 description 2
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- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical class Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical class F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0607—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration
- H01L29/0611—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices
- H01L29/0615—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
- H01L29/063—Reduced surface field [RESURF] pn-junction structures
- H01L29/0634—Multiple reduced surface field (multi-RESURF) structures, e.g. double RESURF, charge compensation, cool, superjunction (SJ), 3D-RESURF, composite buffer (CB) structures
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
- H01L29/0653—Dielectric regions, e.g. SiO2 regions, air gaps adjoining the input or output region of a field-effect device, e.g. the source or drain region
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/66727—Vertical DMOS transistors, i.e. VDMOS transistors with a step of recessing the source electrode
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
- H01L29/167—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table further characterised by the doping material
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- H01L29/267—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, elements provided for in two or more of the groups H01L29/16, H01L29/18, H01L29/20, H01L29/22, H01L29/24, e.g. alloys in different semiconductor regions, e.g. heterojunctions
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
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- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41766—Source or drain electrodes for field effect devices with at least part of the source or drain electrode having contact below the semiconductor surface, e.g. the source or drain electrode formed at least partially in a groove or with inclusions of conductor inside the semiconductor
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
- H01L29/7395—Vertical transistors, e.g. vertical IGBT
- H01L29/7396—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions
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Abstract
Description
Halbleiterbauelemente in Form von Hochspannungstransistoren wie beispielsweise „Cool MOS", die Driftstrecken aus Ladungskompensationszonen und Driftzonen aufweisen, ermöglichen gegenwärtig die niedrigsten Durchlassverluste. In den Ladungskompensationszonen und den Driftzonen wechseln sich Zonen mit hoher n- und p-Dotierung ab, während die Nettoladung in jeder Ebene gering bleibt. In Durchlassrichtung stehen somit hoch n-dotierte Driftzonen mit geringem Bahnwiderstand für den Stromfluss beim Durchschalten des Hochspannungstransistors zur Verfügung, während die Nettoladung im Halbleiterbauelement im Sperrfall ähnlich gering ist wie bei konventionellen vollständig auf hochohmigem Grundmaterial basierenden Halbleiterbauelementen. Somit ist trotz niedrigem Einschaltwiderstand eine hohe Sperrfähigkeit derartiger Ladungskompensations-Halbleiterbauelemente gewährleistet.Semiconductor devices in the form of high-voltage transistors such as "Cool MOS", the drift paths from charge compensation zones and drift zones currently the lowest passage losses. In the charge compensation zones and the drift zones alternate with high n- and p-doping zones, while the net charge remains low at each level. In the forward direction are thus highly n-doped drift zones with low resistance for the Current flow when switching on the high-voltage transistor available while the Net charge in the semiconductor device in the blocking case similarly low is as on conventional completely on high-resistance base material based semiconductor devices. Thus, despite low on-resistance a high blocking capacity ensures such charge compensation semiconductor devices.
Derartige Halbleiterbauelemente können entweder durch eine Aufbautechnik hergestellt werden oder durch Einbringen von Grabenstrukturen in ein Driftstreckenmaterial. Bei der Herstellung durch eine Aufbautechnik werden nacheinander auf einem Substrat Epitaxielagen abgeschieden und jeweils derart maskiert, dass nebeneinander n- und p-Dotierbereiche durch beispielsweise Ionenimplantation entstehen können. Durch diese Ionenimplantation kann eine genaue Dosiskontrolle erfolgen, womit auch eine exakte Ladungskompensation zwischen Ladungskompensationszonen und Driftzonen der Driftstrecke möglich ist, d. h. die Differenz der implantierten Akzeptoren und Donatoren kann mit Hilfe der Ionenimplantation exakt eingestellt werden.such Semiconductor devices can either be made by a construction technique or by introducing of trench structures in a drift path material. In the preparation of by a construction technique are successively on a substrate Epitaxielagen deposited and each masked in such a way that next to each other n- and p-doping arise by, for example, ion implantation can. This ion implantation allows accurate dose control, thus also an exact charge compensation between charge compensation zones and drift zones of the drift path is possible, d. H. the difference The implanted acceptors and donors can be detected by ion implantation be set exactly.
Nach Erreichen einer vorgesehenen Dicke der Epitaxielagen können anschließend die einzelnen ionenimplantierten Inseln in vertikaler Richtung zusammen diffundiert werden, so dass nebeneinander angeordnete Bereiche mit hoher n- und p-Dotierung für die Driftzonen und die Ladungskompensationszonen entstehen. Bei dieser Diffusion breiten sich die Inseln jedoch nicht nur in vertikaler Richtung, sondern auch in lateraler Richtung aus, so dass die Schrittweite zwischen den Zonen nicht beliebig verringert werden kann. Somit sind für die Reduzierung des Flächenbedarfs derartiger Halbleiterbauelemente Grenzen gesetzt. Eine Vorbereitung und Definition exakter Grenzflächen, insbesondere während der Diffusionsphase von implantierten Störstellen in den für Driftzonen und Ladungskompensationszonen bestimmten Bereichen, ist mit Hilfe einer derartigen Aufbautechnik praktisch nicht erfolgreich durchführbar, da laterale Diffusionsvorgänge die Grenzen zwischen Driftzonen und Ladungskompensationszonen verschieben.To Achieve an intended thickness of the Epitaxielagen can then the individual ion-implanted islands in the vertical direction together be diffused, so that juxtaposed areas with high n- and p-doping for the Drift zones and the charge compensation zones arise. At this Diffusion, however, the islands spread not only in vertical Direction, but also in a lateral direction, so that the step size between the zones can not be arbitrarily reduced. Consequently are for the reduction of space requirements set such limits semiconductor devices. A preparation and definition of exact interfaces, especially during the diffusion phase of implanted impurities in the drift zones and charge compensation zones specific areas, is using Such a construction technique practically unsuccessful, since lateral diffusion processes shift the boundaries between drift zones and charge compensation zones.
Das oben erwähnte zweite Prinzip, nämlich Grabenstrukturen in ein Driftstreckenmaterial einzubringen und anschließend die Grabenstrukturen mit einem komplementär zur Umgebung der Grabenstrukturen dotierten Material aufzufüllen und gleichzeitig oder nachträglich zu dotieren, verhindert auch nicht hinreichend, dass sich eine der beiden Bereiche, entweder der Driftzonenbereich oder der Ladungskompensationszonenbereich, über die Wände der Grabenstruktur in den Nachbarbereich hinein durch laterale Diffusion von Störstellenatomen ausdehnt. Besonders kritisch verhalten sich dabei Dotierstoffatome, deren Diffusionskoeffizienten deutlich über dem Diffusionskoeffizienten der herkömmlichen Dotierstoffe wie Bor, Phosphor oder Arsen liegen. Derartige schnell diffundierende Dotierstoffe haben jedoch den Vorteil, dass die Prozessdauer für die Dotierung der Grabenstrukturen bzw. der Füllmaterialien in den Grabenstrukturen deutlich verkürzt werden kann. Voraussetzung ist jedoch, dass trotz schnell diffundierender Dotierstoffatome eine gegenseitige laterale Ausdiffusion von Störstellen aus den Grabenstrukturen in die verbliebenen Mesastrukturen und umgekehrt unterbleibt.The mentioned above second principle, namely trench structures in a drift path material and then introduce the Trench structures with a complementary to the environment of the trench structures to replenish doped material and simultaneously or subsequently to dope, also does not sufficiently prevent that one of the both areas, either the drift zone area or the charge compensation zone area, over the Walls of the Trench structure into the neighboring area through lateral diffusion of impurity atoms expands. Dotierstoffatome behave particularly critical, their diffusion coefficients well above the diffusion coefficient the conventional dopants like boron, phosphorus or arsenic. Such fast-diffusing However, dopants have the advantage that the process time for the doping the trench structures and the filling materials can be significantly shortened in the trench structures. requirement is, however, that despite rapidly diffusing dopant atoms a mutual lateral outdiffusion of impurities from the trench structures in the remaining mesa structures and vice versa omitted.
Zusammenfassung der ErfindungSummary of the invention
Eine Ausführungsform der Erfindung betrifft ein Halbleiterbauelement und ein Verfahren zur Herstellung desselben. Das Halbleiterbauelement weist einen kristallinen Halbleiterkörper mit einer Driftstreckenstruktur auf. Die Driftstreckenstruktur weist Driftzonen in einer Grabenstruktur mit Grabenwänden und Ladungskompensationszonen mit komplementärem Leitungstyp zu benachbarten Driftzonen auf. Zwischen den Driftzonen und den Ladungskompensationszonen sind hochohmige Zwischenzonen an den Grabenwänden angeordnet.A embodiment The invention relates to a semiconductor device and a method for the production of the same. The semiconductor device has a crystalline semiconductor body with a drift path structure. The drift path structure points Drift zones in a trench structure with trench walls and charge compensation zones with complementary Line type to adjacent drift zones. Between the drift zones and the charge compensation zones are high impedance intermediate zones at the moat walls arranged.
Ausführungsformen der Erfindung werden nun mit Bezug auf die beigefügten Figuren beschrieben.embodiments The invention will now be described with reference to the accompanying drawings described.
Kurze FigurenbeschreibungShort description of the figures
Detaillierte Beschreibung der FigurenDetailed description the figures
Das
Halbleiterbauelement
Die
an den Grabenwänden
Die
Grabenböden
Um
sicherzustellen, dass bei Hochtemperaturprozessen die unterschiedlich
dotierten Bereiche der Driftzonen
Dieses
angelagerte Isolationsmaterial
Die
Siliziumbrücken
Um
eine Hochohmigkeit, die einen Ladungsträgeraustausch zwischen den Driftzonen
Die
Breite bZ der Zwischenzonen
Trotz
der relativ hohen Konzentration an Störstellen in den n-leitenden
Driftzonen
Bei
dieser Ausführungsform
der Erfindung weist das Halbleiterbauelement
Das
in
Auf
der Oberseite
Zunächst wird
auf einer Oberseite
Die
Zwischenzone (
Dazu
zeigt
Die
Zwischenzonen
Die
Vorbelegungen, wie sie in
Außerdem ist
die Abgrenzung nun deutlich stärker,
zumal die Mesastrukturen von den zwischenzeitlich gefüllten Grabenstrukturen
Um
ein Freiätzen
der Zwischenzonen
Dabei
wird gleichzeitig die Oberfläche
- 11
- Halbleiterbauelement (Ausführungsform)Semiconductor device (Embodiment)
- 22
- HalbleiterkörperSemiconductor body
- 33
- DriftstreckenstrukturDrift path structure
- 44
- Driftzonedrift region
- 55
- Grabenstrukturgrave structure
- 66
- Grabenwandgrave wall
- 77
- LadungskompensationszoneCharge compensation zone
- 88th
- Zwischenzone (hochohmig)intermediate zone (High impedance)
- 99
- Grabenbodengrave soil
- 1010
- Siliziumbrückesilicon bridge
- 1111
- Isolationsmaterial angelagert an Siliziumbrückeinsulation material attached to silicon bridge
- 1212
- KompensationszonenmaterialCompensation zone material
- 1313
- HalbleiterwaferSemiconductor wafer
- 1414
- ZwischenzonenmaterialIntermediate zone material
- 1515
- Halbleitermaterial (intrinsisch)Semiconductor material (Intrinsic)
- 1616
- Substratsubstratum
- 1717
- Maskierungsschichtmasking layer
- 1818
- Fenster in der Maskierungsschichtwindow in the masking layer
- 1919
- Schichtlayer
- 2020
- Vorbelegungsschichtbias film
- 2121
- Oberseitetop
- 2222
- Rückseiteback
- 2323
- Epitaxieschichtepitaxial layer
- 2424
- Oberseite des Halbleiterkörperstop of the semiconductor body
- 2525
- Mesastrukturmesa
- 2626
- frei geätzte Zwischenzonefree etched intermediate zone
- 2727
- Siliziumoxid-SchichtSilicon oxide layer
- 2828
- Metallisierung (Kollektor)metallization (Collector)
- 2929
- BodyzoneBody zone
- 3030
- Anschlusszonecontiguous zone
- 3131
- Metallisierungmetallization
- 3232
- Gateoxidschichtgate oxide layer
- 3333
- Gateelektrodegate electrode
- 3434
- Zwischenoxidschichtintermediate oxide
- 3535
- Detailbereichdetail section
- 3636
- Detailbereichdetail section
- 3737
- Detailbereichdetail section
- 3838
- Detailbereichdetail section
- 3939
- Detailbereichdetail section
- 4040
- Porenpore
- AA
- Pfeilrichtungarrow
- BB
- Pfeilrichtungarrow
- bD b D
- Breite der Driftzonewidth the drift zone
- bL b l
- Breite der Ladungskompensationszonewidth the charge compensation zone
- bZ b Z
- Breite der Zwischenzonewidth the intermediate zone
- CC
- KontaktContact
- CD C D
- Dotierstoffdosisdopant dose
- Ee
- KontaktContact
- GG
- Gatekontaktgate contact
- hH
- Tiefe der Grabenstruktur oder Dicke der Epitaxieschichtdepth the trench structure or thickness of the epitaxial layer
Claims (41)
Priority Applications (1)
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DE102007044414A DE102007044414A1 (en) | 2007-09-17 | 2007-09-17 | Semiconductor component e.g. MOS field effect transistor, has intermediate zones arranged on ditch walls, where intermediate zones are high-impedance with respect to loading compensation zones and drift zones |
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DE102007044414A DE102007044414A1 (en) | 2007-09-17 | 2007-09-17 | Semiconductor component e.g. MOS field effect transistor, has intermediate zones arranged on ditch walls, where intermediate zones are high-impedance with respect to loading compensation zones and drift zones |
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DE102007044414A1 true DE102007044414A1 (en) | 2009-03-19 |
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DE (1) | DE102007044414A1 (en) |
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CN101989553B (en) * | 2009-08-07 | 2012-09-05 | 上海华虹Nec电子有限公司 | Method for manufacturing lengthwise region of supernode MOS |
EP3608969A1 (en) * | 2018-08-08 | 2020-02-12 | Infineon Technologies Austria AG | Oxygen inserted si-layers for reduced substrate dopant outdiffusion in power devices |
EP3608968A1 (en) * | 2018-08-08 | 2020-02-12 | Infineon Technologies Austria AG | Oxygen inserted si-layers for reduced contact implant outdiffusion in vertical power devices |
EP3608967A1 (en) * | 2018-08-08 | 2020-02-12 | Infineon Technologies Austria AG | Oxygen inserted si-layers in vertical trench power devices |
EP3608966A1 (en) * | 2018-08-08 | 2020-02-12 | Infineon Technologies Austria AG | Oxygen inserted si-layers for reduced contact implant outdiffusion in vertical power devices |
EP3651202A1 (en) * | 2018-11-09 | 2020-05-13 | Infineon Technologies Austria AG | Semiconductor device with superjunction and oxygen inserted si-layers |
EP3748689A1 (en) * | 2019-06-06 | 2020-12-09 | Infineon Technologies Dresden GmbH & Co . KG | Semiconductor device and method of producing the same |
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DE102014113214B4 (en) * | 2013-09-13 | 2021-05-06 | Infineon Technologies Ag | BIPOLAR TRANSISTOR WITH INSULATED GATE WITH MESA SECTIONS BETWEEN CELL SEPARATION STRUCTURES AND METHOD OF MANUFACTURING |
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DE102014113214B4 (en) * | 2013-09-13 | 2021-05-06 | Infineon Technologies Ag | BIPOLAR TRANSISTOR WITH INSULATED GATE WITH MESA SECTIONS BETWEEN CELL SEPARATION STRUCTURES AND METHOD OF MANUFACTURING |
CN110828561A (en) * | 2018-08-08 | 2020-02-21 | 英飞凌科技奥地利有限公司 | Si layer for oxygen insertion to reduce contact implant out-diffusion in vertical power devices |
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US10580888B1 (en) | 2018-08-08 | 2020-03-03 | Infineon Technologies Austria Ag | Oxygen inserted Si-layers for reduced contact implant outdiffusion in vertical power devices |
US11031466B2 (en) | 2018-08-08 | 2021-06-08 | Infineon Technologies Austria Ag | Method of forming oxygen inserted Si-layers in power semiconductor devices |
US10741638B2 (en) | 2018-08-08 | 2020-08-11 | Infineon Technologies Austria Ag | Oxygen inserted Si-layers for reduced substrate dopant outdiffusion in power devices |
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EP3608967A1 (en) * | 2018-08-08 | 2020-02-12 | Infineon Technologies Austria AG | Oxygen inserted si-layers in vertical trench power devices |
US10868172B2 (en) | 2018-08-08 | 2020-12-15 | Infineon Technologies Austria Ag | Vertical power devices with oxygen inserted Si-layers |
US10790353B2 (en) | 2018-11-09 | 2020-09-29 | Infineon Technologies Austria Ag | Semiconductor device with superjunction and oxygen inserted Si-layers |
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US11545545B2 (en) | 2018-11-09 | 2023-01-03 | Infineon Technologies Austria Ag | Superjunction device with oxygen inserted Si-layers |
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US11908904B2 (en) | 2021-08-12 | 2024-02-20 | Infineon Technologies Austria Ag | Planar gate semiconductor device with oxygen-doped Si-layers |
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