JP5158095B2 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 39
- 238000004519 manufacturing process Methods 0.000 title description 17
- 239000012535 impurity Substances 0.000 claims description 64
- 239000000758 substrate Substances 0.000 claims description 16
- 239000002344 surface layer Substances 0.000 claims description 8
- 230000015556 catabolic process Effects 0.000 description 28
- 239000010410 layer Substances 0.000 description 21
- 229910021332 silicide Inorganic materials 0.000 description 21
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 21
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
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- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
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- 229910044991 metal oxide Inorganic materials 0.000 description 2
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- 239000010703 silicon Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-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
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
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- 150000002500 ions Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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Description
August 2001が開示するn型MOSトランジスタの断面図(同文献Fig.1の(a))である。
(付記1)
第1導電型の第1領域を有する半導体基板と、
前記第1領域上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜上に形成されたゲート電極と、
前記第1領域内において、前記ゲート電極に対し一方の側に形成され、前記第1導電型と反対の第2導電型を有するソース領域と、
前記第1領域内において、前記ゲート電極に対し他方の側に、前記ソース領域側の端が該ゲート電極の下方に入り込んで形成され、前記第2導電型を有する第1低濃度ドレイン領域と、
前記第1低濃度ドレイン領域内において、前記ゲート電極から離れて形成され、前記第2導電型を有し、該第1低濃度ドレイン領域よりも不純物濃度が高い高濃度ドレイン領域と、
前記第1低濃度ドレイン領域内において、前記高濃度ドレイン領域と前記ゲート電極の間の表面領域に形成され、前記第1導電型を有し、該第1低濃度ドレイン領域内の前記第2導電型を有する領域とpn接合を形成する逆導電型領域と
を有する半導体装置。
(付記2)
前記逆導電型領域は、前記第1低濃度ドレイン領域とpn接合を形成する付記1に記載の半導体装置。
(付記3)
前記逆導電型領域は、前記高濃度ドレイン領域とpn接合を形成する付記1に記載の半導体装置。
(付記4)
前記逆導電型領域の前記ソース側の端が、前記第1低濃度ドレイン領域の前記ソース側の端よりも前記高濃度ドレイン側に配置されている付記1に記載の半導体装置。
(付記5)
前記逆導電型領域の前記ソース側の端が、前記ゲート電極の下方に入り込んで形成されている付記1に記載の半導体装置。
(付記6)
さらに、前記高濃度ドレイン領域の表面に形成されたシリサイド領域を有し、該シリサイド領域の前記ソース側の端が、前記逆導電型領域の該高濃度ドレイン領域側の端から離れている付記1に記載の半導体装置。
(付記7)
さらに、前記シリサイド領域を露出させ、前記逆導電型領域を覆うように形成された絶縁膜を有する付記6に記載の半導体装置。
(付記8)
前記逆導電型領域の不純物濃度が、前記第1低濃度ドレイン領域の不純物濃度よりも高く、前記高濃度ドレイン領域の不純物濃度よりも低い付記1に記載の半導体装置。
(付記9)
前記逆導電型領域の前記ソース側の端が、前記ゲート電極の該第1低濃度ドレイン領域側の端から、前記高濃度ドレイン領域側に離れて形成されている付記1に記載の半導体装置。
(付記10)
さらに、前記第1低濃度ドレイン領域内に形成され、前記第2導電型を有し、不純物濃度が、該第1低濃度ドレイン領域の不純物濃度よりも高く、前記高濃度ドレイン領域の不純物濃度よりも低い第2低濃度ドレイン領域を有し、前記逆導電型領域が、該第2低濃度ドレイン領域とpn接合を形成する付記1に記載の半導体装置。
(付記11)
前記第1低濃度ドレイン領域の不純物濃度よりも前記逆導電型領域の不純物濃度が高く、前記逆導電型領域の不純物濃度よりも前記第2低濃度ドレイン領域の不純物濃度が高く、前記第2低濃度ドレイン領域の不純物濃度よりも前記高濃度ドレイン領域の不純物濃度が高い付記10に記載の半導体装置。
(付記12)
前記第1導電型はp型であり、前記第2導電型はn型である付記1に記載の半導体装置。
(付記13)
前記ゲート電極に高周波の入力電力が印加され、前記ドレイン領域は、該ゲート電極に印加された該入力電力を増幅した高周波の出力電力を出力し、携帯電子機器である付記1に記載の半導体装置。
(付記14)
前記ゲート絶縁膜の材料及び厚さに対応して、前記ゲート電極と前記ドレイン領域との間に直流電圧が印加されたときの耐圧が想定され、
前記ゲート電極に高周波の入力電力が印加され、前記ドレイン領域は、該ゲート電極に印加された該入力電力を増幅した高周波の出力電力を出力し、該出力電力の出力時に該ドレイン領域にかかるドレイン電圧の最大値が、前記耐圧の2倍以上である付記1に記載の半導体装置。
(付記15)
(a)第1導電型の第1領域を有する半導体基板を準備する工程と、
(b)前記第1領域内に、前記第1導電型と反対の第2導電型を有する第1低濃度ドレイン領域を形成する工程と、
(c)前記第1領域及び前記第1低濃度ドレイン領域の上に、ゲート絶縁膜を形成する工程と、
(d)前記ゲート絶縁膜の上に、前記第1領域及び前記第1低濃度ドレイン領域の双方に重なりを持つように、ゲート電極を形成する工程と、
(e)前記第1低濃度ドレイン領域の表層に、前記第1導電型を決定する不純物を注入し、該第1導電型を有する逆導電型領域を形成する工程と、
(f)前記第1低濃度ドレイン領域の上方に形成され、前記ゲート電極の該第1低濃度ドレイン領域側の側壁を覆い、前記逆導電型領域一部上方まで延在する絶縁膜を形成する工程と、
(g)前記絶縁膜をマスクとして、前記逆導電型領域及びその下方の前記第1低濃度ドレイン領域に、前記第2導電型を決定する不純物を注入し、該第2導電型を有し、該第1低濃度ドレイン領域よりも不純物濃度が高い高濃度ドレイン領域を形成する工程と、
(h)前記ゲート電極に対し、前記第1低濃度ドレイン領域と反対側の前記第1領域内に、前記第2導電型を有するソース領域を形成する工程と
を有する半導体装置の製造方法。
(付記16)
さらに、(i)前記工程(e)と前記工程(f)との間に、該逆導電型領域の下方の前記第1低濃度ドレイン領域内に、前記第2導電型を決定する不純物を注入し、該第1低濃度ドレイン領域よりも不純物濃度が高い第2低濃度ドレイン領域を形成する工程を有し、前記工程(g)は、前記逆導電型領域及びその下の前記第2低濃度ドレイン領域に、前記第2導電型を決定する不純物を注入し、該第2低濃度ドレイン領域よりも不純物濃度が高い高濃度ドレイン領域を形成する付記15に記載の半導体装置の製造方法。
(付記17)
さらに、(j)前記高濃度ドレイン領域の表層をシリサイド化する工程を有する付記15に記載の半導体装置の製造方法。
Claims (7)
- 第1導電型の第1領域を有する半導体基板と、
前記第1領域上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜上に形成されたゲート電極と、
前記第1領域内において、前記ゲート電極に対し一方の側に形成され、前記第1導電型と反対の第2導電型を有するソース領域と、
前記第1領域内において、前記ゲート電極に対し他方の側に、前記ソース領域側の端が該ゲート電極の下方に入り込んで形成され、前記第2導電型を有する第1低濃度ドレイン領域と、
前記第1低濃度ドレイン領域内において、前記ゲート電極から離れて形成され、前記第2導電型を有し、該第1低濃度ドレイン領域よりも不純物濃度が高い高濃度ドレイン領域と、
前記第1低濃度ドレイン領域内において、前記高濃度ドレイン領域と前記ゲート電極の間の表面領域に形成され、前記第1導電型を有し、該第1低濃度ドレイン領域とpn接合を形成し、前記第1低濃度ドレイン領域より不純物濃度が高く、前記高濃度ドレイン領域より不純物濃度が低い逆導電型領域と
を有する半導体装置。 - 前記逆導電型領域の前記ソース側の端が、前記第1低濃度ドレイン領域の前記ソース側の端よりも前記高濃度ドレイン側に配置されている請求項1に記載の半導体装置。
- 前記逆導電型領域の前記ソース側の端が、前記ゲート電極の下方に入り込んで形成されている請求項1に記載の半導体装置。
- 前記逆導電型領域の前記ソース側の端が、前記ゲート電極の該第1低濃度ドレイン領域側の端から、前記高濃度ドレイン領域側に離れて形成されている請求項1に記載の半導体装置。
- 前記ゲート電極に高周波の入力電力が印加され、前記高濃度ドレイン領域は、該ゲート電極に印加された該入力電力を増幅した高周波の出力電力を出力し、携帯電子機器である請求項1に記載の半導体装置。
- 前記第1低濃度ドレイン領域と前記高濃度ドレイン領域との間に形成され、不純物濃度が前記逆導電型領域よりも高く、不純物濃度が前記高濃度ドレイン領域よりも低く、前記第2導電型を有し、少なくとも一部が前記逆導電型領域とpn接合を形成する第2低濃度ドレイン領域を有することを特徴とする請求項1に記載の半導体装置。
- (a)第1導電型の第1領域を有する半導体基板を準備する工程と、
(b)前記第1領域内に、前記第1導電型と反対の第2導電型を有する低濃度ドレイン領域を形成する工程と、
(c)前記第1領域及び前記低濃度ドレイン領域の上に、ゲート絶縁膜を形成する工程と、
(d)前記ゲート絶縁膜の上に、前記第1領域及び前記低濃度ドレイン領域の双方に重なりを持つように、ゲート電極を形成する工程と、
(e)前記低濃度ドレイン領域の表層に、前記第1導電型を決定する不純物を注入し、該第1導電型を有する逆導電型領域を形成する工程と、
(f)前記低濃度ドレイン領域の上方に形成され、前記ゲート電極の該低濃度ドレイン領域側の側壁を覆い、前記逆導電型領域一部上方まで延在する絶縁膜を形成する工程と、
(g)前記絶縁膜をマスクとして、前記逆導電型領域及びその下方の前記低濃度ドレイン領域に、前記第2導電型を決定する不純物を注入し、該第2導電型を有し、該低濃度ドレイン領域よりも不純物濃度が高い高濃度ドレイン領域を形成する工程と、
(h)前記ゲート電極に対し、前記低濃度ドレイン領域と反対側の前記第1領域内に、前記第2導電型を有するソース領域を形成する工程と
を有する半導体装置の製造方法。
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JP5525736B2 (ja) * | 2009-02-18 | 2014-06-18 | セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー | 半導体装置及びその製造方法 |
JP5471320B2 (ja) | 2009-11-09 | 2014-04-16 | 富士通セミコンダクター株式会社 | 半導体装置とその製造方法 |
JP5560812B2 (ja) * | 2010-03-23 | 2014-07-30 | 富士通セミコンダクター株式会社 | 半導体装置及びその製造方法 |
CN102437116A (zh) * | 2011-09-23 | 2012-05-02 | 上海华力微电子有限公司 | 一种有效减少静电放电保护电路面积的工艺集成方法 |
CN102315131B (zh) * | 2011-09-28 | 2016-03-09 | 上海华虹宏力半导体制造有限公司 | 晶体管的制作方法 |
US10276596B2 (en) * | 2014-08-06 | 2019-04-30 | Taiwan Semiconductor Manufacturing Co., Ltd. | Selective polysilicon doping for gate induced drain leakage improvement |
KR102227128B1 (ko) * | 2014-09-03 | 2021-03-12 | 삼성전자주식회사 | 반도체 장치 및 이의 제조 방법 |
CN106298923B (zh) * | 2015-06-02 | 2020-10-09 | 联华电子股份有限公司 | 高压金属氧化物半导体晶体管元件以及其制造方法 |
US20180138307A1 (en) * | 2016-11-17 | 2018-05-17 | Globalfoundries Inc. | Tunnel finfet with self-aligned gate |
US10157916B2 (en) * | 2017-04-10 | 2018-12-18 | Taiwan Semiconductor Manufacturing Co., Ltd. | Semiconductor device and manufacturing method thereof |
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