JP4712459B2 - トランジスタ及びその動作方法 - Google Patents
トランジスタ及びその動作方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 117
- 150000004767 nitrides Chemical class 0.000 claims description 73
- 239000012535 impurity Substances 0.000 claims description 22
- 229910002704 AlGaN Inorganic materials 0.000 description 72
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 53
- 229910002601 GaN Inorganic materials 0.000 description 51
- 239000000758 substrate Substances 0.000 description 22
- 230000010287 polarization Effects 0.000 description 13
- 239000011777 magnesium Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 10
- 229910052594 sapphire Inorganic materials 0.000 description 10
- 239000010980 sapphire Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000002161 passivation Methods 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- 230000005533 two-dimensional electron gas Effects 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 5
- 230000002269 spontaneous effect Effects 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- 239000003574 free electron Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001312 dry etching Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000005036 potential barrier Methods 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 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
- 150000001495 arsenic compounds Chemical class 0.000 description 1
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/70—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]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/10—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 with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1066—Gate region of field-effect devices with PN junction gate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/778—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface
- H01L29/7786—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface with direct single heterostructure, i.e. with wide bandgap layer formed on top of active layer, e.g. direct single heterostructure MIS-like HEMT
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/20—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
- H01L29/2003—Nitride compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- 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
- H01L29/4175—Source or drain electrodes for field effect devices for lateral devices where the connection to the source or drain region is done through at least one part of the semiconductor substrate thickness, e.g. with connecting sink or with via-hole
Description
M. Hikita et al. Technical Digest of 2004 International electron Devices Meeting (2004) p.803. O.Ambacher et al., J.Appl.Phys. Vol.85 (1999) p. 3222. L. Zhang et al., IEEE Transactions on Electron Devices, vol. 47, no. 3, pp. 507-511, 2000.
図1は、本発明の第1の実施形態に係る窒化物半導体装置を示す断面図である。
図4は、本発明の第2の実施形態に係る窒化物半導体装置を示す断面図である。
図7は、本発明の第3の実施形態に係る窒化物半導体装置を示す断面図である。
102、402、702 AlNバッファ層
103、404、703 アンドープGaN層
104、405、704 アンドープAlGaN層
105、406 p型コントロール層
106、407、707 p型コンタクト層
107、408、708 パッシベーション膜
108、409、709 ソース電極
109、410、710 ドレイン電極
110、411、711 ゲート電極
401 n型Si基板
403 アンドープAlGaN下地層
705 低濃度p型コントロール層
706 高濃度p型コントロール層
Claims (3)
- チャネル領域を含む第1のアンドープ半導体層と、前記チャネル領域の上に設けられ、前記チャネル領域よりもバンドギャップが大きい第2のアンドープ半導体層と、前記第2のアンドープ半導体層の内部または上に設けられたp型の導電性を有するコントロール領域と、前記コントロール領域の一部に接して設けられたゲート電極と、前記コントロール領域の両側方に設けられたソース電極およびドレイン電極とを備え、
前記ゲート電極を前記ソース電極に対して順方向バイアスすることにより、前記チャネル領域に正孔が注入され、前記ソース電極と前記ドレイン電極との間に流れる電流が制御され、
前記コントロール領域に電圧を印加しない状態ではノーマリーオフであり、
前記第1のアンドープ半導体層、第2のアンドープ半導体層および前記コントロール領域が窒化物半導体により構成され、
前記第1のアンドープ半導体層の内部で且つ前記チャネル領域の下方に、前記チャネル領域よりもバンドギャップの大きな半導体層が設けられていることを特徴とするトランジスタ。 - 前記コントロール領域の内部に、p型の導電性を有する不純物の濃度が異なる少なくとも2つ以上の領域が設けられており、前記不純物の濃度勾配が上方に向かって増加するように設定されていることを特徴とする請求項1に記載のトランジスタ。
- チャネル領域を含む第1のアンドープ半導体層と、前記チャネル領域の上に設けられ、前記チャネル領域よりもバンドギャップが大きい第2のアンドープ半導体層と、前記第2のアンドープ半導体層の内部または上に設けられたp型の導電性を有するコントロール領域と、前記コントロール領域の一部に接して設けられたゲート電極と、前記コントロール領域の両側方に設けられたソース電極およびドレイン電極とを有し、前記第1のアンドープ半導体層、第2のアンドープ半導体層および前記コントロール領域が窒化物半導体により構成され、かつ前記第1の半導体層の内部で且つ前記チャネル領域の下方に、前記チャネル領域よりもバンドギャップの大きな半導体層が設けられたトランジスタの動作方法であって、
前記コントロール領域または前記第2のアンドープ半導体層から前記チャネル領域に正孔を注入し、前記チャネル領域を介して前記ソース電極と前記ドレイン電極との間に流れる電流を制御するステップと、
前記コントロール領域に電圧を印加しない状態でノーマリーオフとするステップと
を含むことを特徴とするトランジスタの動作方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2005200127A JP4712459B2 (ja) | 2005-07-08 | 2005-07-08 | トランジスタ及びその動作方法 |
PCT/JP2006/312830 WO2007007548A1 (ja) | 2005-07-08 | 2006-06-27 | トランジスタ及びその動作方法 |
US11/995,040 US8076698B2 (en) | 2005-07-08 | 2006-06-27 | Transistor and method for operating the same |
CNA2006800187863A CN101185158A (zh) | 2005-07-08 | 2006-06-27 | 晶体管及其驱动方法 |
EP06767447A EP1909316A4 (en) | 2005-07-08 | 2006-06-27 | TRANSISTOR AND METHOD FOR ITS OPERATION |
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JP2005200127A JP4712459B2 (ja) | 2005-07-08 | 2005-07-08 | トランジスタ及びその動作方法 |
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JP4712459B2 true JP4712459B2 (ja) | 2011-06-29 |
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EP (1) | EP1909316A4 (ja) |
JP (1) | JP4712459B2 (ja) |
CN (1) | CN101185158A (ja) |
WO (1) | WO2007007548A1 (ja) |
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JP2007019309A (ja) | 2007-01-25 |
EP1909316A4 (en) | 2009-06-03 |
US8076698B2 (en) | 2011-12-13 |
US20090121775A1 (en) | 2009-05-14 |
WO2007007548A1 (ja) | 2007-01-18 |
CN101185158A (zh) | 2008-05-21 |
EP1909316A1 (en) | 2008-04-09 |
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