JP2021153096A - 半導体装置 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 173
- 239000012535 impurity Substances 0.000 claims abstract description 74
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 description 54
- 229910010271 silicon carbide Inorganic materials 0.000 description 21
- 230000015556 catabolic process Effects 0.000 description 18
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 17
- 229910021332 silicide Inorganic materials 0.000 description 13
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 230000005684 electric field Effects 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 230000006378 damage Effects 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 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
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021341 titanium silicide Inorganic materials 0.000 description 1
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Abstract
Description
12 アノード電極(第1の電極)
14 カソード電極(第2の電極)
15 シリサイド層(金属半導体化合物層)
20 ドリフト領域(第1の半導体領域)
22a 第1のストライプ領域(第2の半導体領域)
22b 第2のストライプ領域(第3の半導体領域)
22c 第3のストライプ領域(第6の半導体領域)
24 アノード領域(第4の半導体領域)
28 エッジ領域(第5の半導体領域)
28a 第1の部分
28b 第2の部分
30 第1の周辺領域(第7の半導体領域)
32 第2の周辺領域(第8の半導体領域)
100 MPS(半導体装置)
P1 第1の面
P2 第2の面
d1 第1の距離
d2 第2の距離
d3 第3の距離
d4 第4の距離
d5 第5の距離
d6 第6の距離
d7 第7の距離
dx 深さ
w1 第1の幅
w2 第2の幅
w3 第3の幅
Claims (9)
- 第1の電極と、
第2の電極と、
前記第1の電極と前記第2の電極との間に設けられ、前記第1の電極が接する第1の面と、前記第2の電極が接する第2の面と、を有する半導体層であって、
前記第1の電極と接する第1導電形の第1の半導体領域と、
前記第1の面と前記第1の半導体領域との間に設けられ、前記第1の面に平行な第1の方向に延び、前記第1の電極と接する第2導電形の第2の半導体領域と、
前記第1の面と前記第1の半導体領域との間に設けられ、前記第1の方向に延び、前記第1の電極と接する第2導電形の第3の半導体領域と、
前記第1の面と前記第1の半導体領域との間に設けられ、前記第2の半導体領域と前記第3の半導体領域との間に挟まれ、前記第1の電極に電気的に接続された第2導電形の第4の半導体領域と、
前記第1の半導体領域と前記第4の半導体領域との間に設けられ、第1導電形不純物濃度が前記第1の半導体領域の第1導電形不純物濃度より高く、第1の部分を含む第1導電形の第5の半導体領域と、
を含む半導体層と、
を備え、
前記第4の半導体領域の、前記第1の面に平行で前記第1の方向に垂直な方向の第2の方向の第1の幅が、前記第2の半導体領域の前記第2の方向の第2の幅よりも大きく、
前記第2の半導体領域と前記第1の部分との間の、前記第2の方向の第1の距離が、前記第2の半導体領域と前記第4の半導体領域との間の、前記第2の方向の第2の距離よりも小さく、
前記第1の部分の前記第2の方向の第3の幅が、前記第1の幅よりも小さい、半導体装置。 - 前記第5の半導体領域が、前記第1の部分との間に前記第1の半導体領域を挟む第2の部分を更に含み、
前記第3の半導体領域と前記第2の部分との間の、前記第2の方向の第3の距離が、前記第3の半導体領域と前記第4の半導体領域との間の、前記第2の方向の第4の距離よりも小さい、請求項1記載の半導体装置。 - 前記第1の面に垂直な第3の方向から見た前記第5の半導体領域の形状は環状である請求項2記載の半導体装置。
- 前記第4の半導体領域と前記第1の電極との間に設けられた金属半導体化合物層を、更に備え、
前記第1の部分と前記第2の部分との間の前記第2の方向の第5の距離は、前記金属半導体化合物層の前記第2の方向の第4の幅よりも大きい請求項2又は請求項3記載の半導体装置。 - 前記第1の部分は、前記第1の電極と離間する請求項1ないし請求項4いずれか一項記載の半導体装置。
- 前記第1の部分と前記第1の面との間の第6の距離は、前記第1の面を基準とする前記第4の半導体領域の深さより小さい請求項5記載の半導体装置。
- 前記半導体層は、前記第1の面と前記第1の半導体領域との間に設けられ、前記第1の方向に延び、前記第1の電極と接し、前記第4の半導体領域との間に前記第2の半導体領域を挟む第2導電型の第6の半導体領域を、更に含む請求項1ないし請求項6いずれか一項記載の半導体装置。
- 前記第2の距離は、前記第6の半導体領域と前記第2の半導体領域との間の第7の距離よりも小さい請求項7記載の半導体装置。
- 前記半導体層は、前記第1の面と前記第1の半導体領域との間に設けられ、前記第2の半導体領域、前記第3の半導体領域、及び、前記第4の半導体領域を囲む第7の半導体領域と、
前記第1の半導体領域と前記第7の半導体領域との間に設けられ、前記第2の半導体領域、前記第3の半導体領域、及び、前記第4の半導体領域を囲み、第1導電形不純物濃度が前記第1の半導体領域の第1導電形不純物濃度より高い第8の半導体領域を、
更に含み、
前記第5の半導体領域の第1導電型不純物濃度は、前記第8の半導体領域の第1導電型不純物濃度よりも低い請求項1ないし請求項8いずれか一項記載の半導体装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020052531A JP7305591B2 (ja) | 2020-03-24 | 2020-03-24 | 半導体装置 |
EP20193086.4A EP3886180A1 (en) | 2020-03-24 | 2020-08-27 | Mps semiconductor device |
CN202010892612.1A CN113451298A (zh) | 2020-03-24 | 2020-08-31 | 半导体装置 |
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JP2009094203A (ja) * | 2007-10-05 | 2009-04-30 | Denso Corp | 炭化珪素半導体装置 |
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