JP5543383B2 - 埋め込み絶縁層を貫いて半導体層間に接触を有するデバイス、およびこのデバイスの製造プロセス - Google Patents
埋め込み絶縁層を貫いて半導体層間に接触を有するデバイス、およびこのデバイスの製造プロセス Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 65
- 238000004519 manufacturing process Methods 0.000 title description 2
- 239000000758 substrate Substances 0.000 claims description 59
- 239000000463 material Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000005530 etching Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 239000012212 insulator Substances 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 2
- 239000002019 doping agent Substances 0.000 claims description 2
- 230000005669 field effect Effects 0.000 claims 6
- 239000002184 metal Substances 0.000 description 8
- 238000002513 implantation Methods 0.000 description 4
- 238000001459 lithography Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 229910008828 WSiO Inorganic materials 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910021332 silicide Inorganic materials 0.000 description 2
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Semiconductor Memories (AREA)
- Bipolar Transistors (AREA)
- Thin Film Transistor (AREA)
- Element Separation (AREA)
Description
−第1の領域、第2の領域および接触は同じタイプの導電性を有する;
−第1の領域はトランジスタのドレイン領域で、第2の領域は埋め込みビットラインに属する;
−第1の領域はトランジスタのソース領域で、第2の領域は埋め込みソースラインに属する;
−第1の領域はバイポーラトランジスタのエミッターから成り、第2の領域は埋め込み注入ラインに属する;
−第2の領域はトランジスタのバックコントロールゲート領域であり、第1の領域はバックコントロールゲートドライブラインに属する;
−接触は金属相互接続材料により形成される;
−第1の領域および第2の領域は逆のタイプの導電性を有し、接触は、導電性が第1の領域と同じタイプの導電性である上部領域および導電性が第2の領域と同じタイプの導電性である下部領域を有する。
−接触を形成するために、以下のステップが実行される:
・埋め込み絶縁層を超えて、第1の領域を貫通し、第2の領域に到達するまで延びた溝を内部に形成するための半導体基板のエッチング;および
・溝の内部接続材料による充填;
−内部接続材料は半導体材料である;
−内部接続材料は予めドープされている;
−溝内に半導体材料をドープするステップを更に含む;
−溝の上部領域および下部領域は正負逆にドープされている;
−上部領域と下部領域との境界は絶縁層と水平に位置している;
−上部領域と下部領域との境界は第1の領域上の薄い層と水平に位置している;
−内部接続材料は金属である。
Claims (14)
- 半導体材料の薄い層と、
ベース基板と、
前記薄い層と前記ベース基板とを隔離する埋め込み絶縁層と、
を含み、前記薄い層は電界効果トランジスタのソース領域及びチャネル領域を含み、前記ベース基板は埋め込み注入ラインを含む、SeOI(Semiconductor−On−Insulator)基板上に作製された半導体デバイスであって、前記半導体デバイスは、
前記薄い層内の第1の伝導領域と、
前記ベース基板内の第2の伝導領域であって、前記第2の伝導領域は前記埋め込み注入ラインに含まれる、第2の伝導領域と、
前記埋め込み絶縁層を貫通して前記第1の伝導領域と前記第2の伝導領域とを接続する接触部と、を含み、
前記第1の伝導領域は、バイポーラトランジスタのエミッター、前記電界効果トランジスタの前記ソース領域によって形成される前記バイポーラトランジスタのベースおよび前記電界効果トランジスタの前記チャネル領域によって形成される前記バイポーラトランジスタのコレクタを構成することを特徴とする半導体デバイス。 - 前記第2の伝導領域はバックコントロールゲート領域であり、前記第1の伝導領域はバックコントロールゲートドライブラインに属することを特徴とする請求項1に記載の半導体デバイス。
- 前記接触部はドープされた半導体内部接続材料によって形成されることを特徴とする請求項1または2に記載の半導体デバイス。
- 前記接触部は、前記第1の伝導領域と同じ型の導電性である下部領域と、逆の型の導電性である上部領域とを有することを特徴とする請求項1乃至3のいずれか1項に記載の半導体デバイス。
- 前記上部領域と前記下部領域との境界は前記埋め込み絶縁層と同じ水平面上に位置することを特徴とする請求項4に記載の半導体デバイス。
- 前記上部領域と前記下部領域との境界は前記第1の伝導領域上の前記薄い層と同じ水平面上に位置することを特徴とする請求項4に記載の半導体デバイス。
- 半導体材料の薄い層と、
ベース基板と、
前記薄い層と前記ベース基板との間に埋め込まれ、前記薄い層と前記ベース基板とを隔離する埋め込み絶縁層と、
を含み、前記薄い層は電界効果トランジスタのソース領域及びチャネル領域を含み、前記ベース基板は埋め込み注入ラインを含む、SeOI(Semiconductor−On−Insulator)基板上に作製された半導体デバイスを製作するプロセスであって、前記半導体デバイスは、
前記薄い層内の第1の伝導領域と、
前記ベース基板内の第2の伝導領域であって、前記第2の伝導領域は前記埋め込み注入ライン内に含まれる、第2の伝導領域と、を含み、
前記第1の伝導領域は、バイポーラトランジスタのエミッター、前記電界効果トランジスタの前記ソース領域によって形成される前記バイポーラトランジスタのベースおよび前記電界効果トランジスタの前記チャネル領域によって形成される前記バイポーラトランジスタのコレクタを構成し、
前記プロセスは、前記埋め込み絶縁層を貫通して前記第1の伝導領域と前記第2の伝導領域を接続する接触部を形成するステップを含むことを特徴とするプロセス。 - 前記接触部を形成するために、
前記半導体基板内に、前記埋め込み絶縁層を越えて、前記第1の伝導領域を貫通し、前記第2の伝導領域に到達するまで延びている溝(6)を形成するために前記半導体基板をエッチングするステップと、
内部接続材料によって前記溝を充填するステップと
が実行されることを特徴とする請求項7に記載のプロセス。 - 前記内部接続材料は事前にドープされた半導体材料であることを特徴とする請求項8に記載のプロセス。
- 前記内部接続材料は半導体材料であり、前記溝内の前記半導体材料にドーピングするステップを更に含むことを特徴とする請求項9に記載のプロセス。
- 前記溝内の前記半導体材料にドーピングするステップは、前記溝内にドーパントを拡散させるアニーリング工程によって実行されることを特徴とする請求項10に記載のプロセス。
- 前記溝の上部領域(8)と下部領域(9)が逆の型の導電性を有することを特徴とする請求項9乃至11のいずれか1項に記載のプロセス。
- 前記上部領域と前記下部領域との境界は前記埋め込み絶縁層と同じ水平面上に位置することを特徴とする請求項12に記載のプロセス。
- 前記上部領域と前記下部領域との境界は前記第1の伝導領域上の前記薄い層と同じ水平面上に位置することを特徴とする請求項12に記載のプロセス。
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FR1050244A FR2955200B1 (fr) | 2010-01-14 | 2010-01-14 | Dispositif, et son procede de fabrication, disposant d'un contact entre regions semi-conductrices a travers une couche isolante enterree |
FR1050244 | 2010-01-14 |
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JP2011155259A JP2011155259A (ja) | 2011-08-11 |
JP5543383B2 true JP5543383B2 (ja) | 2014-07-09 |
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EP (1) | EP2355143A1 (ja) |
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CN (1) | CN102184927B (ja) |
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US9768254B2 (en) * | 2015-07-30 | 2017-09-19 | International Business Machines Corporation | Leakage-free implantation-free ETSOI transistors |
DE102015015699A1 (de) | 2015-12-04 | 2017-06-08 | Abb Schweiz Ag | Elektronisches Leistungsmodul |
FR3095891B1 (fr) | 2019-05-09 | 2023-01-13 | St Microelectronics Sa | Circuit électronique |
KR102690949B1 (ko) | 2019-06-14 | 2024-08-02 | 에스케이하이닉스 주식회사 | 반도체 장치 및 그 제조 방법 |
WO2021242721A1 (en) * | 2020-05-28 | 2021-12-02 | Zeno Semiconductor, Inc. | A memory device comprising an electrically floating body transistor |
US11894450B2 (en) * | 2021-11-18 | 2024-02-06 | Globalfoundries U.S. Inc. | Lateral bipolar transistor with emitter and collector regions including portions within In-insulator layer cavities and method |
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CN102184927B (zh) | 2014-11-05 |
US9490264B2 (en) | 2016-11-08 |
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US20110169090A1 (en) | 2011-07-14 |
TWI455270B (zh) | 2014-10-01 |
EP2355143A1 (en) | 2011-08-10 |
JP2011155259A (ja) | 2011-08-11 |
FR2955200A1 (fr) | 2011-07-15 |
KR20110083540A (ko) | 2011-07-20 |
SG173270A1 (en) | 2011-08-29 |
CN102184927A (zh) | 2011-09-14 |
KR101277328B1 (ko) | 2013-06-20 |
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