JP5200372B2 - 電界効果トランジスタおよびその製造方法 - Google Patents
電界効果トランジスタおよびその製造方法 Download PDFInfo
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- JP5200372B2 JP5200372B2 JP2006331076A JP2006331076A JP5200372B2 JP 5200372 B2 JP5200372 B2 JP 5200372B2 JP 2006331076 A JP2006331076 A JP 2006331076A JP 2006331076 A JP2006331076 A JP 2006331076A JP 5200372 B2 JP5200372 B2 JP 5200372B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000002353 field-effect transistor method Methods 0.000 title 1
- 230000005669 field effect Effects 0.000 claims description 28
- 239000012535 impurity Substances 0.000 claims description 27
- 230000005533 two-dimensional electron gas Effects 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 10
- 150000004767 nitrides Chemical class 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 2
- 229910002704 AlGaN Inorganic materials 0.000 description 12
- 238000005468 ion implantation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910010038 TiAl Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- -1 silicon ions Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002109 crystal growth method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 1
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 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 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
- 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
- H01L29/7787—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 with wide bandgap charge-carrier supplying layer, e.g. direct single heterostructure MODFET
-
- 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
- H01L29/02—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
- H01L29/08—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 carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/0843—Source or drain regions of field-effect devices
-
- 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
- H01L29/66446—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET]
- H01L29/66462—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET] with a heterojunction interface channel or gate, e.g. HFET, HIGFET, SISFET, HJFET, HEMT
-
- 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
- H01L29/02—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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Junction Field-Effect Transistors (AREA)
- Electrodes Of Semiconductors (AREA)
Description
2 アンドープGaN層(電子走行層)
3 高抵抗またはn形AlGaN層(電子供給層)
4 ゲート電極
5 ソース電極
6 ドレイン電極
7 第1の高濃度領域
8 第2の高濃度領域
9 2次元電子ガスの層
Claims (4)
- 基板上に窒化物半導体からなる電子走行層と電子供給層が順次形成され、電子供給層上にゲート電極、ソース電極およびドレイン電極を形成した電界効果トランジスタにおいて、
ソース電極およびドレイン電極直下の深さ方向に、電子供給層と電子走行層の間の2次元電子ガスの層を挟むように2重の不純物の高濃度領域が形成され、
それぞれの高濃度領域は、ゲート電極直下の電子供給層と電子走行層の不純物濃度よりそれぞれ高濃度となるよう形成されており、かつソース電極とゲート電極の間およびドレイン電極とゲート電極の間の半導体層の表面が平坦であり、
前記2次元電子ガスの層の不純物濃度は、前記2重の不純物の高濃度領域のどちらよりも低いことを特徴とする電界効果トランジスタ。 - 前記2重の不純物の高濃度領域は、第1の高濃度領域と第2の高濃度領域とからなり、
電子供給層内に形成される前記第1の高濃度領域のキャリア濃度が1×1018〜1020cm-3、電子走行層内に形成される前記第2の高濃度領域のキャリア濃度1×1018〜1019cm-3で、かつ前記第1の高濃度領域のキャリア濃度が前記第2の高濃度領域のキャリア濃度より高くなるように形成されている請求項1記載の電界効果トランジスタ。 - 基板上に窒化物半導体からなる電子走行層と電子供給層を順次形成し、電子供給層上にゲート電極、ソース電極およびドレイン電極を形成する電界効果トランジスタの製造方法において、
ソース電極およびドレイン電極直下の電子供給層と電子走行層に2段階で不純物を注入して、その深さ方向に、電子供給層と電子走行層間の2次元電子ガスの層を挟むように2重の不純物の高濃度領域を形成し、それぞれの高濃度領域がゲート電極直下の電子供給層と電子走行層の不純物濃度よりそれぞれ高濃度となるよう形成したと共に、
前記2次元電子ガスの層の不純物濃度は、前記2重の不純物の高濃度領域のどちらよりも低くなるように形成したことを特徴とする電界効果トランジスタの製造方法。 - 前記2重の不純物の高濃度領域は、第1の高濃度領域と第2の高濃度領域とからなり、
電子供給層内に形成される前記第1の高濃度領域のキャリア濃度が1×1018〜1020cm-3、電子走行層内に形成される前記第2の高濃度領域のキャリア濃度1×1018〜1019cm-3で、かつ前記第1の高濃度領域のキャリア濃度が前記第2の高濃度領域のキャリア濃度より高くなるように注入不純物イオンの加速エネルギとドーズ量が調整される請求項3記載の電界効果トランジスタの製造方法。
Priority Applications (2)
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JP2006331076A JP5200372B2 (ja) | 2006-12-07 | 2006-12-07 | 電界効果トランジスタおよびその製造方法 |
US11/902,964 US7786509B2 (en) | 2006-12-07 | 2007-09-26 | Field-effect transistor and method of making same |
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JP2006331076A JP5200372B2 (ja) | 2006-12-07 | 2006-12-07 | 電界効果トランジスタおよびその製造方法 |
Publications (2)
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JP2008147311A JP2008147311A (ja) | 2008-06-26 |
JP5200372B2 true JP5200372B2 (ja) | 2013-06-05 |
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Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US9711633B2 (en) * | 2008-05-09 | 2017-07-18 | Cree, Inc. | Methods of forming group III-nitride semiconductor devices including implanting ions directly into source and drain regions and annealing to activate the implanted ions |
US8159004B2 (en) * | 2008-08-26 | 2012-04-17 | Sanken Electric Co., Ltd. | Compound semiconductor device having dopant concentration gradient |
US8674409B2 (en) * | 2008-12-26 | 2014-03-18 | Renesas Electronics Corporation | Heterojunction field effect transistor, method for producing heterojunction field effect transistor, and electronic device |
JP5568891B2 (ja) * | 2009-06-03 | 2014-08-13 | 日本電気株式会社 | ヘテロ接合電界効果トランジスタ、その製造方法 |
JP5587564B2 (ja) * | 2009-06-19 | 2014-09-10 | ルネサスエレクトロニクス株式会社 | 電界効果トランジスタおよび電界効果トランジスタの製造方法 |
WO2010151855A2 (en) * | 2009-06-26 | 2010-12-29 | Cornell University | Iii-v semiconductor structures including aluminum-silicon nitride passivation |
KR101779497B1 (ko) | 2010-08-26 | 2017-09-18 | 엘지이노텍 주식회사 | 나노입자가 도핑된 열전소자를 포함하는 열전모듈 및 그 제조 방법 |
US10134727B2 (en) * | 2012-09-28 | 2018-11-20 | Intel Corporation | High breakdown voltage III-N depletion mode MOS capacitors |
US9064709B2 (en) | 2012-09-28 | 2015-06-23 | Intel Corporation | High breakdown voltage III-N depletion mode MOS capacitors |
JP6623691B2 (ja) | 2015-10-30 | 2019-12-25 | 富士通株式会社 | 化合物半導体装置及びその製造方法 |
CN108649071B (zh) * | 2018-05-17 | 2019-03-19 | 苏州汉骅半导体有限公司 | 半导体器件及其制造方法 |
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JPH0691249B2 (ja) * | 1991-01-10 | 1994-11-14 | インターナショナル・ビジネス・マシーンズ・コーポレイション | 変調ドープ形misfet及びその製造方法 |
JP3767759B2 (ja) | 1997-02-07 | 2006-04-19 | 株式会社村田製作所 | 電界効果型半導体素子 |
JP3733420B2 (ja) * | 2002-03-01 | 2006-01-11 | 独立行政法人産業技術総合研究所 | 窒化物半導体材料を用いたヘテロ接合電界効果型トランジスタ |
JP2005116858A (ja) * | 2003-10-09 | 2005-04-28 | Furukawa Electric Co Ltd:The | 半導体電子デバイス及び半導体電子デバイスの製造方法 |
US7419892B2 (en) * | 2005-12-13 | 2008-09-02 | Cree, Inc. | Semiconductor devices including implanted regions and protective layers and methods of forming the same |
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US20090001423A1 (en) | 2009-01-01 |
JP2008147311A (ja) | 2008-06-26 |
US7786509B2 (en) | 2010-08-31 |
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