JP7231122B1 - 半導体装置および半導体装置の製造方法 - Google Patents
半導体装置および半導体装置の製造方法 Download PDFInfo
- Publication number
- JP7231122B1 JP7231122B1 JP2022558559A JP2022558559A JP7231122B1 JP 7231122 B1 JP7231122 B1 JP 7231122B1 JP 2022558559 A JP2022558559 A JP 2022558559A JP 2022558559 A JP2022558559 A JP 2022558559A JP 7231122 B1 JP7231122 B1 JP 7231122B1
- Authority
- JP
- Japan
- Prior art keywords
- gallium nitride
- semiconductor device
- nitride crystal
- insulating film
- electrode
- 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.)
- Active
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 204
- 238000004519 manufacturing process Methods 0.000 title claims description 69
- 238000000034 method Methods 0.000 title claims description 61
- 229910002601 GaN Inorganic materials 0.000 claims abstract description 204
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims abstract description 192
- 239000013078 crystal Substances 0.000 claims abstract description 147
- 239000000758 substrate Substances 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 142
- 239000011229 interlayer Substances 0.000 claims description 67
- 239000011800 void material Substances 0.000 claims description 21
- 238000000206 photolithography Methods 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims description 14
- 238000005468 ion implantation Methods 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- 238000001039 wet etching Methods 0.000 claims description 7
- 238000000059 patterning Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 57
- 229910052782 aluminium Inorganic materials 0.000 description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000001312 dry etching Methods 0.000 description 10
- 229920002120 photoresistant polymer Polymers 0.000 description 10
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 10
- 229910052721 tungsten Inorganic materials 0.000 description 10
- 239000010937 tungsten Substances 0.000 description 10
- 230000015556 catabolic process Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 7
- 230000005684 electric field Effects 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 238000004544 sputter deposition Methods 0.000 description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000002513 implantation Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000000137 annealing Methods 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000007943 implant Substances 0.000 description 4
- -1 or the like Chemical compound 0.000 description 4
- 239000002356 single layer Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 3
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 230000005533 two-dimensional electron gas Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000000231 atomic layer deposition Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
-
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
-
- 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
- H01L29/40—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
-
- 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
- H01L29/66007—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
-
- 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
- H01L29/66007—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
- H01L29/66848—Unipolar field-effect transistors with a Schottky gate, i.e. MESFET
-
- 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
- H01L29/778—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface
-
- 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
-
- 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
- H01L29/80—Field effect transistors with field effect produced by a PN or other rectifying junction gate, i.e. potential-jump barrier
- H01L29/812—Field effect transistors with field effect produced by a PN or other rectifying junction gate, i.e. potential-jump barrier with a Schottky gate
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Junction Field-Effect Transistors (AREA)
Abstract
Description
図1は、本実施の形態における半導体装置を構成するユニットセル34を示す上面模式図であり、図1のA1-A2断面の模式図が図2であり、図2の楕円で囲んだ領域の模式図が図3である。また、図4は、本実施の形態における半導体装置の一部においてユニットセル34が複数配置された例を示す上面模式図であり、図4のB1-B2断面の模式図が図5である。ここで、ユニットセル34は、トランジスタを含む半導体装置の素子であり、正六角形とした例を示しているが、後述する窒化ガリウム結晶領域7と同様の島状であれば形状は正六角形に限定されず、略正六角形、正六角形以外の正多角形、略正多角形または略円形であってもよい。また、半導体基板1はシリコン基板である例について示す。
BFOM=4VB 2/Ron・・・式
ここで、VBは絶縁破壊耐圧であり、Ronはオン抵抗である。
実施の形態1では、内側電極をソース電極17、外側電極をドレイン電極18とした例を示したが、本実施の形態では、内側電極をドレイン電極18、外側電極をソース電極17とした例について説明する。この場合、実施の形態1におけるドレインビア電極25、ソース配線28、ソースパッド32、ドレインパッド33をそれぞれ、ソースビア電極36、ドレイン配線37、ドレインパッド33、ソースパッド32とする。これ以外の構成は実施の形態1と同様である。
Claims (14)
- 窒化ガリウムとは異なる材料からなる半導体基板と、
前記半導体基板の上に形成されたバッファ層と、
前記バッファ層の上に島状に複数形成され、それぞれの前記島の外縁部の下方において前記バッファ層と非接触になるようにボイドが設けられた窒化ガリウム結晶領域と、
前記窒化ガリウム結晶領域の上に接して形成され、平面視で前記島の外周側に設けられた外側電極と、
前記窒化ガリウム結晶領域の上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜の上に接して形成され、平面視で前記外側電極よりも前記島の内側に設けられたゲート電極と、
前記窒化ガリウム結晶領域の上に接して形成され、平面視で前記ゲート電極よりも前記島の内側に設けられた内側電極と
を備えた半導体装置。 - 前記ボイドは、前記島の外周方向において連続して設けられることを特徴とする、請求項1に記載の半導体装置。
- 前記窒化ガリウム結晶領域の表面に少なくとも1か所以上形成され、前記内側電極と前記外側電極との少なくとも一方に接し、不純物濃度が1×1018cm―3以上である、高濃度領域をさらに備えることを特徴とする、請求項1または請求項2に記載の半導体装置。
- 前記島の重心と前記重心から最も近い前記島の外周との間の距離Rnに対する、前記重心と前記重心から最も遠い前記外周との間の距離Rfの比Rf/Rnが2以下であることを特徴とする、請求項1から請求項3のいずれか1項に記載の半導体装置。
- 前記外側電極および前記ゲート電極は、平面視でリング型であることを特徴とする、請求項1から請求項4のいずれか1項に記載の半導体装置。
- 前記島は、平面視において周期的に形成され、正六角形の形状を有することを特徴とする、請求項1から請求項5のいずれか1項に記載の半導体装置。
- 前記窒化ガリウム結晶領域の前記外縁部に形成された非晶質窒化ガリウムまたは多結晶窒化ガリウムを含む分離層をさらに有し、前記分離層の表面には絶縁膜が形成されることを特徴とする、請求項1から請求項6のいずれか1項に記載の半導体装置。
- 前記半導体基板は、シリコン基板であることを特徴とする、請求項1から請求項7までのいずれか1項に記載の半導体装置。
- 前記窒化ガリウム結晶領域の上方の前記内側電極の上と前記ゲート電極の上とに形成され、前記内側電極の上と前記ゲート電極の上とに当該膜を貫通する第1層間コンタクトホールが設けられた第1層間絶縁膜と、
前記第1層間絶縁膜の上と前記内側電極の上の前記第1層間コンタクトホールの内部とに形成され、前記内側電極に接する内側配線と、
前記第1層間絶縁膜の上と前記ゲート電極の上の前記第1層間コンタクトホールの内部とに形成され、前記島の上にそれぞれ形成された前記ゲート電極に接するゲート配線と、
前記第1層間絶縁膜と前記内側配線と前記ゲート配線との上に形成され、前記内側配線の上に当該膜を貫通する第2層間コンタクトホールが設けられた、第2層間絶縁膜と、
前記第2層間絶縁膜の上と前記第2層間コンタクトホールの内部とに形成され、前記島の上にそれぞれ形成された前記内側電極に接する上部配線と、
前記島の上にそれぞれ形成された前記外側電極および、前記半導体基板に接するビア電極と、
前記半導体基板の裏面側に形成され、前記半導体基板を介して前記ビア電極と電気的に接続される下部電極パッドと
をさらに備えることを特徴とする、請求項1から請求項8のいずれか1項に記載の半導体装置。 - 前記上部配線は、隣り合う前記島の間の上と前記島の上とを、複数の前記島に渡って覆うように面状に形成されることを特徴とする、請求項9に記載の半導体装置。
- 前記ボイドの一部を代替して配置され、前記窒化ガリウム結晶領域と前記バッファ層とに接して形成される絶縁性の補助層をさらに備え、前記補助層の熱膨張係数は、前記窒化ガリウム結晶領域の下部を構成する格子緩和層と前記半導体基板との熱膨張係数の間の範囲にあることを特徴とする、請求項1から請求項10のいずれか1項に記載の半導体装置。
- 窒化ガリウムとは異なる材料からなる半導体基板の上にバッファ層を形成する工程と、
前記バッファ層の上に窒化ガリウム系エピタキシャル成長を阻害する補助層を形成し、フォトリソグラフィとエッチングとにより前記補助層をパターニングして前記バッファ層を部分的に露出させる工程と、
前記バッファ層および前記補助層の上に、窒化ガリウム結晶領域を形成する工程と、
前記補助層をウェットエッチングにより除去し、前記窒化ガリウム結晶領域の外縁部の下方において前記窒化ガリウム結晶領域と前記バッファ層とが非接触になるようにボイドを形成する工程と
を備え、
前記ボイドを形成する工程の後に、加熱温度を1000℃以上とする処理工程を有する
半導体装置の製造方法。 - 前記処理工程の前に、前記窒化ガリウム結晶領域の表面に少なくとも1か所以上、不純物濃度が1×1018cm―3以上となる領域をイオン注入で形成する、イオン注入工程をさらに有することを特徴とする、請求項12に記載の半導体装置の製造方法。
- 前記ウェットエッチングにおいて、前記補助層の一部を残すことを特徴とする、請求項12または請求項13に記載の半導体装置の製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2022/002427 WO2023139788A1 (ja) | 2022-01-24 | 2022-01-24 | 半導体装置および半導体装置の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP7231122B1 true JP7231122B1 (ja) | 2023-03-01 |
JPWO2023139788A1 JPWO2023139788A1 (ja) | 2023-07-27 |
Family
ID=85380695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2022558559A Active JP7231122B1 (ja) | 2022-01-24 | 2022-01-24 | 半導体装置および半導体装置の製造方法 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP7231122B1 (ja) |
WO (1) | WO2023139788A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117457735A (zh) * | 2023-12-22 | 2024-01-26 | 英诺赛科(珠海)科技有限公司 | 一种晶体管结构及其制作方法、芯片 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005260052A (ja) * | 2004-03-12 | 2005-09-22 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2009016780A (ja) * | 2007-06-07 | 2009-01-22 | Panasonic Corp | 半導体装置 |
JP2011233612A (ja) * | 2010-04-26 | 2011-11-17 | Mitsubishi Electric Corp | 半導体装置及びその製造方法 |
JP2012004486A (ja) * | 2010-06-21 | 2012-01-05 | Panasonic Corp | 窒化物半導体装置及び窒化物半導体装置の製造方法 |
US9166048B2 (en) * | 2012-09-16 | 2015-10-20 | Sensor Electronic Technology, Inc. | Lateral/vertical semiconductor device |
US20190006464A1 (en) * | 2017-06-29 | 2019-01-03 | Teledyne Scientific & Imaging, Llc | Fet with micro-scale device array |
JP2019054015A (ja) * | 2017-09-12 | 2019-04-04 | 株式会社豊田中央研究所 | 窒化物半導体装置 |
-
2022
- 2022-01-24 WO PCT/JP2022/002427 patent/WO2023139788A1/ja active Application Filing
- 2022-01-24 JP JP2022558559A patent/JP7231122B1/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005260052A (ja) * | 2004-03-12 | 2005-09-22 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2009016780A (ja) * | 2007-06-07 | 2009-01-22 | Panasonic Corp | 半導体装置 |
JP2011233612A (ja) * | 2010-04-26 | 2011-11-17 | Mitsubishi Electric Corp | 半導体装置及びその製造方法 |
JP2012004486A (ja) * | 2010-06-21 | 2012-01-05 | Panasonic Corp | 窒化物半導体装置及び窒化物半導体装置の製造方法 |
US9166048B2 (en) * | 2012-09-16 | 2015-10-20 | Sensor Electronic Technology, Inc. | Lateral/vertical semiconductor device |
US20190006464A1 (en) * | 2017-06-29 | 2019-01-03 | Teledyne Scientific & Imaging, Llc | Fet with micro-scale device array |
JP2019054015A (ja) * | 2017-09-12 | 2019-04-04 | 株式会社豊田中央研究所 | 窒化物半導体装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117457735A (zh) * | 2023-12-22 | 2024-01-26 | 英诺赛科(珠海)科技有限公司 | 一种晶体管结构及其制作方法、芯片 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2023139788A1 (ja) | 2023-07-27 |
WO2023139788A1 (ja) | 2023-07-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9576841B2 (en) | Semiconductor device and manufacturing method | |
TWI443731B (zh) | Semiconductor wafers, and semiconductor devices | |
JP5670700B2 (ja) | 集積半導体基板構造およびその製造方法 | |
US7821014B2 (en) | Semiconductor device and manufacturing method thereof with a recessed backside substrate for breakdown voltage blocking | |
JP5439763B2 (ja) | 半導体装置および半導体装置の製造方法 | |
TWI696242B (zh) | 用於形成薄的絕緣體上半導體基板的方法 | |
JP2020507211A (ja) | 半導体デバイスのゲート構造および製造方法 | |
US9391137B2 (en) | Power semiconductor device and method of fabricating the same | |
JP6545362B2 (ja) | 半導体装置および半導体装置の製造方法 | |
US9356113B2 (en) | Method of producing a junction field-effect transistor (JFET) | |
WO2018146791A1 (ja) | 半導体装置 | |
WO2012060206A1 (ja) | 半導体装置およびその製造方法 | |
JP7231122B1 (ja) | 半導体装置および半導体装置の製造方法 | |
US20200395447A1 (en) | Semiconductor Device and Method for Fabricating a Wafer | |
US8501550B2 (en) | Method of fabricating gate and method of manufacturing semiconductor device using the same | |
JP2009026838A (ja) | 半導体装置及びその製造方法 | |
WO2012105170A1 (ja) | 半導体装置およびその製造方法 | |
US20220020743A1 (en) | Self-aligned isolation for self-aligned contacts for vertical fets | |
JPWO2019163075A1 (ja) | 半導体装置 | |
KR20140131681A (ko) | 전력 소자용 기판, 그 제조방법 및 이를 포함하는 전력 소자 | |
CN110931546B (zh) | 包括边缘终端结构的iii-v半导体器件及其形成方法 | |
KR100636934B1 (ko) | 반도체 소자의 제조 방법 | |
CN117410266A (zh) | 具有应力降低特征的化合物半导体基装置 | |
KR20210094480A (ko) | 반도체 소자 및 반도체 웨이퍼의 제조 방법 | |
CN117976540A (zh) | 半导体功率器件及其制作方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20220927 |
|
A871 | Explanation of circumstances concerning accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A871 Effective date: 20220927 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20230117 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230130 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 7231122 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |