JP5436581B2 - トランジスタ装置、コンピューティングシステムおよび半導体デバイス積層体の製造方法 - Google Patents
トランジスタ装置、コンピューティングシステムおよび半導体デバイス積層体の製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 34
- 238000000034 method Methods 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 230000004888 barrier function Effects 0.000 claims description 69
- 125000006850 spacer group Chemical group 0.000 claims description 48
- 125000001475 halogen functional group Chemical group 0.000 claims description 28
- 239000000758 substrate Substances 0.000 claims description 28
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 25
- 229910052710 silicon Inorganic materials 0.000 claims description 25
- 239000010703 silicon Substances 0.000 claims description 25
- 230000006911 nucleation Effects 0.000 claims description 24
- 238000010899 nucleation Methods 0.000 claims description 24
- 229910052790 beryllium Inorganic materials 0.000 claims description 16
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 16
- 229910001218 Gallium arsenide Inorganic materials 0.000 claims description 8
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000002210 silicon-based material Substances 0.000 claims 6
- 239000010410 layer Substances 0.000 description 174
- 239000010408 film Substances 0.000 description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 10
- 239000010931 gold Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 239000002019 doping agent Substances 0.000 description 6
- 229910052738 indium Inorganic materials 0.000 description 6
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 6
- KXNLCSXBJCPWGL-UHFFFAOYSA-N [Ga].[As].[In] Chemical compound [Ga].[As].[In] KXNLCSXBJCPWGL-UHFFFAOYSA-N 0.000 description 4
- 238000000407 epitaxy Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000001451 molecular beam epitaxy Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- AUCDRFABNLOFRE-UHFFFAOYSA-N alumane;indium Chemical compound [AlH3].[In] AUCDRFABNLOFRE-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- MDPILPRLPQYEEN-UHFFFAOYSA-N aluminium arsenide Chemical compound [As]#[Al] MDPILPRLPQYEEN-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration 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
- 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
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 description 1
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- -1 lanthanum aluminate Chemical class 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005036 potential barrier Methods 0.000 description 1
- 238000001289 rapid thermal chemical vapour deposition Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- PBCFLUZVCVVTBY-UHFFFAOYSA-N tantalum pentoxide Inorganic materials O=[Ta](=O)O[Ta](=O)=O PBCFLUZVCVVTBY-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000000038 ultrahigh vacuum chemical vapour deposition Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Description
Claims (18)
- 半導体基板の上に設けられているバッファ構造と、
前記バッファ構造の上に設けられており、InAlAs含有材料の下部障壁層および変調ドーピングが行なわれたベリリウム含有シリコン材料のハロー層を有する下部障壁構造と、
前記下部障壁構造の上に設けられている量子井戸構造と、
前記量子井戸構造の上に設けられている上部障壁構造と、
前記上部障壁構造の上に設けられているエッチストップ層と、
前記量子井戸構造に結合されているゲートコンタクト構造と
を備えるトランジスタ装置。 - 前記量子井戸構造は、InGaAs量子井戸層、InAlAs含有下部スペーサ層、および、InAlAs上部スペーサ層を有しており、前記変調ドーピングが行なわれたベリリウム含有シリコン材料のハロー層は、前記下部スペーサ層の下に設けられている請求項1に記載のトランジスタ装置。
- 前記量子井戸構造は、In0.7Ga0.3As量子井戸層、In0.52Al0.48As含有下部スペーサ層、および、In0.52Al0.48As上部スペーサ層を有しており、前記変調ドーピングが行なわれたベリリウム含有シリコン材料のハロー層は、前記下部スペーサ層の下に設けられている請求項1に記載のトランジスタ装置。
- 前記量子井戸構造は、InGaAs量子井戸層、InAlAs含有下部スペーサ層、および、InAlAs上部スペーサ層を有しており、前記バッファ構造は、前記半導体基板の上に設けられているGaAs含有核生成層、前記核生成層の上に設けられているGaAs含有バッファ層、および、前記バッファ層の上に設けられているInAlAsグレーデッドバッファ層を有する請求項1に記載のトランジスタ装置。
- 前記量子井戸構造は、In0.7Ga0.3As量子井戸層、In0.52Al0.48As含有下部スペーサ層、および、In0.52Al0.48As上部スペーサ層を有しており、前記バッファ構造は、前記半導体基板の上に設けられているGaAs含有核生成層、前記核生成層の上に設けられているGaAs含有バッファ層、および、前記バッファ層の上に設けられているInxAl1−xAsグレーデッドバッファ層を有し、xは0から0.52へと変化する請求項1に記載のトランジスタ装置。
- 前記量子井戸構造は、InGaAs量子井戸層、InAlAs含有下部スペーサ層、および、InAlAs上部スペーサ層を有しており、前記上部障壁構造は、前記量子井戸構造の上に設けられているドーピングが施されたシリコン層、および、前記シリコン層の上に設けられているInAlAs含有上部障壁層を有する請求項1に記載のトランジスタ装置。
- 前記量子井戸構造は、In0.7Ga0.3As量子井戸層、In0.52Al0.48As含有下部スペーサ層、および、In0.52Al0.48As上部スペーサ層を有しており、前記上部障壁構造は、前記量子井戸構造の上に設けられているドーピングが施されたシリコン層、および、前記シリコン層の上に設けられているInAlAs含有上部障壁層を有する請求項1に記載のトランジスタ装置。
- 前記量子井戸構造は、In0.7Ga0.3As量子井戸層、In0.52Al0.48As含有下部スペーサ層、および、In0.52Al0.48As上部スペーサ層を有しており、前記上部障壁構造は、前記量子井戸構造の上に設けられているドーピングが施されたシリコン層、および、前記シリコン層の上に設けられているIn0.52Al0.48As含有上部障壁層を有する請求項1に記載のトランジスタ装置。
- 前記上部障壁構造は、前記量子井戸構造の上に設けられているドーピングが施されたシリコン層、および、前記シリコン層の上に設けられているIn0.52Al0.48As含有上部障壁層を有し、前記変調ドーピングが行なわれたハロー層内のドーピングは前記シリコン層内のドーピングと同じである請求項1に記載のトランジスタ装置。
- 前記変調ドーピングが行なわれたベリリウム含有シリコン材料のハロー層は、前記下部スペーサ層の下に設けられており、
前記バッファ構造は、前記半導体基板の上に設けられているGaAs含有核生成層、前記核生成層の上に設けられているGaAs含有バッファ層、および、前記バッファ層の上に設けられているInxAl1−xAsグレーデッドバッファ層を有し、xは0から0.52に変化し、
前記下部障壁構造は、前記バッファ構造の上に設けられているIn0.52Al0.48As下部障壁層を有し、
前記量子井戸構造は、In0.7Ga0.3As量子井戸層、In0.52Al0.48As含有下部スペーサ層、および、In0.52Al0.48As上部スペーサ層を有しており、
前記上部障壁構造は、前記量子井戸構造の上に設けられているドーピングが施されたシリコン層、および、前記シリコン層の上に設けられているInAlAs含有上部障壁層を有している請求項1に記載のトランジスタ装置。 - 前記ゲートコンタクト構造は、
前記量子井戸構造の上であってゲートリセス内に設けられているゲート誘電体層と、
ゲートスペーサと、
前記ゲートリセス内に設けられている金属ゲート電極と
を有する請求項1に記載のトランジスタ装置。 - トランジスタ装置を持つコンピューティングシステムであって、
半導体ダイを備え、
前記半導体ダイに、
半導体基板上に設けられている量子井戸(QW)層と、
前記QW層の下方に設けられているベリリウムドーピングハロー層と、
前記QW層と前記ハロー層との間に、前記QW層および前記ハロー層のそれぞれに隣接して設けられているInAlAs下部スペーサと、
前記QW層の上に設けられているInAlAsスペーサと、
前記InAlAsスペーサの上に設けられている、デルタドーピングされているSi層と、
デルタドーピングされている前記Si層の上に設けられているInAlAs上部障壁と、
前記InAlAs上部障壁の上に設けられているInPエッチストップ層と、
前記InPエッチストップ層の上に設けられているInxGa1−xAsコンタクト層であって、前記InPエッチストップ層から前記In x Ga 1−x Asコンタクト層へ、x=0.53から1.0への範囲で組成比が傾斜されている前記In x Ga 1−x Asコンタクト層と、
デルタドーピングされている前記Si層を貫通しているリセス内に設けられているHigh−k誘電体層と、
前記High−k誘電体層上に設けられているゲートコンタクトと、
前記半導体ダイに結合されている外部メモリと
を備え、
前記半導体基板は、前記QW層の下方に設けられるInAlAs下部障壁を含み、前記量子井戸はInGaAs組成を持つコンピューティングシステム。 - 前記In x Ga 1−x Asコンタクト層上であって、前記リセスの一方の側に設けられているソースコンタクトと、
前記In x Ga 1−x Asコンタクト層上であって、前記リセスの一方の側に設けられているドレインコンタクトと
をさらに備え、
前記QW層は、論理回路用のトランジスタの一部である請求項12に記載のコンピューティングシステム。 - 前記In x Ga 1−x Asコンタクト層上であって、前記リセスの一方の側に設けられているソースコンタクトと、
前記In x Ga 1−x Asコンタクト層上であって、前記リセスの一方の側に設けられているドレインコンタクトと
をさらに備え、
前記QW層は、メモリ回路用のトランジスタの一部である請求項12に記載のコンピューティングシステム。 - 前記コンピューティングシステムは、携帯電話、ページャ、携帯可能コンピュータ、デスクトップコンピュータ、および、送受信無線機のうちいずれか1つの一部である請求項12に記載のコンピューティングシステム。
- 半導体デバイス積層体の製造方法であって、
半導体基板上に、核生成層、前記核生成層の上方の下部バッファ層、および、グレーデッドバッファ層を含むバッファ構造を形成する段階と、
前記バッファ構造の上方に、下部障壁層および前記下部障壁層の上方の変調ドーピングが行われたベリリウム含有シリコン材料のハロー層を含む下部障壁構造を形成する段階と、
前記下部障壁構造の上方に、下部スペーサ層、QW層、および、上部スペーサ層を含む量子井戸構造を形成する段階と、
前記量子井戸構造の上方に、ドーピング層および前記ドーピング層の上方の上部障壁層を含む上部障壁構造を形成する段階と
を備える製造方法。 - 前記上部障壁構造の上方にInP材料で形成されるエッチストップ層を形成する段階と、
前記エッチストップ層の上方にコンタクト層を形成する段階と、
前記デバイス積層体の、前記上部スペーサ上に設けられているゲート誘電体まで延伸するリセス内にゲートコンタクト構造を形成する段階と
をさらに備える請求項16に記載の製造方法。 - 前記変調ドーピングが行われたベリリウム含有シリコン材料の前記ハロー層を形成することによって、半導体特性が前記上部障壁構造内の前記ドーピング層と同じになる請求項16に記載の製造方法。
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PCT/US2010/022047 WO2010096241A2 (en) | 2009-02-20 | 2010-01-26 | Modulation-doped halo in quantum well field-effect transistors, apparatus made therewith, and methods of using same |
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