JP7272776B2 - 集積回路構造または集積回路構造を製造する方法 - Google Patents
集積回路構造または集積回路構造を製造する方法 Download PDFInfo
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- JP7272776B2 JP7272776B2 JP2018195551A JP2018195551A JP7272776B2 JP 7272776 B2 JP7272776 B2 JP 7272776B2 JP 2018195551 A JP2018195551 A JP 2018195551A JP 2018195551 A JP2018195551 A JP 2018195551A JP 7272776 B2 JP7272776 B2 JP 7272776B2
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Description
本出願は、2017年11月30日に出願された、「次世代型集積回路構造製造」と題される米国仮出願第62/593,149号の恩恵を主張し、その内容全体は、参照によって本明細書に組み込まれる。
以下の段落は、本開示(添付の特許請求の範囲を含む)に記載されている用語についての定義又は文脈を提供する。
シリコンを含むフィンであって、頂部及び側壁を有するフィンと、
上記フィンの上記頂部の上方にあり、上記フィンの上記側壁に横方向に隣接するゲート誘電体層と、
上記フィンの上記頂部の上方にあり、上記フィンの上記側壁に横方向に隣接する上記ゲート誘電体層の上方にあるゲート電極であって、第1側面、及び、上記第1側面に対向する第2側面を有するゲート電極と、
上記ゲート電極の上記第1側面に隣接する第1半導体ソース又はドレイン領域、及び、上記ゲート電極の上記第2側面に隣接する第2半導体ソース又はドレイン領域と、
上記ゲート電極の上記第1側面に隣接する上記第1半導体ソース又はドレイン領域の上方にある第1トレンチコンタクト構造、及び、上記ゲート電極の上記第2側面に隣接する上記第2半導体ソース又はドレイン領域の上方にある第2トレンチコンタクト構造であって、両方ともU字形金属層、及び、上記U字形金属層の全体の上及び上方にあるT字形金属層を有する、第1トレンチコンタクト構造及び第2トレンチコンタクト構造と
を備える集積回路構造。
(項目2)
上記U字形金属層及び上記T字形金属層は組成が異なる、項目1に記載の集積回路構造。
(項目3)
上記U字形金属層はチタンを含み、上記T字形金属層はコバルトを含む、項目2に記載の集積回路構造。
(項目4)
上記第1トレンチコンタクト構造及び上記第2トレンチコンタクト構造は両方とも、上記T字形金属層の上に第3金属層を更に含む、項目1に記載の集積回路構造。
(項目5)
上記第3金属層及び上記U字形金属層は同一の組成を有する、項目4に記載の集積回路構造。
(項目6)
上記第3金属層及び上記U字形金属層はチタンを含み、上記T字形金属層はコバルトを含む、項目5に記載の集積回路構造。
(項目7)
上記第1トレンチコンタクト構造と上記第1半導体ソース又はドレイン領域との間に、及び、上記第2トレンチコンタクト構造と上記第2半導体ソース又はドレイン領域との間に直に挟まれる金属シリサイド層を更に備える、項目1に記載の集積回路構造。
(項目8)
上記金属シリサイド層はチタン及びシリコンを含む、項目7に記載の集積回路構造。
(項目9)
上記第1半導体ソース又はドレイン領域は第1N型半導体ソース又はドレイン領域であり、上記第2半導体ソース又はドレイン領域は第2N型半導体ソース又はドレイン領域である、項目8に記載の集積回路構造。
(項目10)
上記金属シリサイド層は、ニッケル、白金及びシリコンを含む、項目7に記載の集積回路構造。
(項目11)
上記第1半導体ソース又はドレイン領域は第1P型半導体ソース又はドレイン領域であり、上記第2半導体ソース又はドレイン領域は第2P型半導体ソース又はドレイン領域である、項目10に記載の集積回路構造。
(項目12)
上記金属シリサイド層はゲルマニウムを更に含む、項目10に記載の集積回路構造。
(項目13)
上記第1半導体ソース又はドレイン領域は、第1埋め込み半導体ソース又はドレイン領域であり、上記第2半導体ソース又はドレイン領域は、第2埋め込み半導体ソース又はドレイン領域である、項目1に記載の集積回路構造。
(項目14)
上記ゲート電極の上記第1側面と上記第1トレンチコンタクト構造との間の第1誘電体スペーサと、
上記ゲート電極の上記第2側面と上記第2トレンチコンタクト構造との間の第2誘電体スペーサと
を更に備える、項目1に記載の集積回路構造。
(項目15)
上記ゲート誘電体層は更に、上記第1誘電体スペーサと、上記ゲート電極の上記第1側面との間、及び、上記第2誘電体スペーサと上記ゲート電極の上記第2側面との間にある、項目14に記載の集積回路構造。
(項目16)
シリコンを含むフィンを形成する段階であって、上記フィンは頂部及び側壁を有する、段階と、
上記フィンの上記頂部の上方にあり、上記フィンの上記側壁に横方向に隣接するゲート誘電体層を形成する段階と、
上記フィンの上記頂部の上方にあり、上記フィンの上記側壁に横方向に隣接する上記ゲート誘電体層の上方にゲート電極を形成する段階であって、上記ゲート電極は、第1側面、及び、上記第1側面に対向する第2側面を有する、段階と、
上記ゲート電極の上記第1側面に隣接する第1半導体ソース又はドレイン領域、及び、上記ゲート電極の上記第2側面に隣接する第2半導体ソース又はドレイン領域を形成する段階と、
上記ゲート電極の上記第1側面に隣接する上記第1半導体ソース又はドレイン領域の上方にある第1トレンチコンタクト構造、及び、上記ゲート電極の上記第2側面に隣接する上記第2半導体ソース又はドレイン領域の上方にある第2トレンチコンタクト構造を形成する段階であって、上記第1トレンチコンタクト構造及び上記第2トレンチコンタクト構造は両方とも、U字形金属層、及び、上記U字形金属層の全体の上及び上方にあるT字形金属層を有する、段階と
を備える、集積回路構造を製造する方法。
(項目17)
上記U字形金属層及び上記T字形金属層は組成が異なる、項目16に記載の方法。
(項目18)
上記U字形金属層はチタンを含み、上記T字形金属層はコバルトを含む、項目16に記載の方法。
(項目19)
上記第1トレンチコンタクト構造及び上記第2トレンチコンタクト構造は両方とも、上記T字形金属層の上に第3金属層を更に含む、項目16に記載の方法。
(項目20)
上記第3金属層及び上記U字形金属層は同一の組成を有する、項目19に記載の方法。
Claims (22)
- シリコンを含むフィンであって、頂部及び側壁を有するフィンと、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接するゲート誘電体層と、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接する前記ゲート誘電体層の上方にあるゲート電極であって、第1側面、及び、前記第1側面に対向する第2側面を有するゲート電極と、
前記ゲート電極の前記第1側面に隣接する第1半導体ソース又はドレイン領域、及び、前記ゲート電極の前記第2側面に隣接する第2半導体ソース又はドレイン領域と、
前記ゲート電極の前記第1側面に隣接する前記第1半導体ソース又はドレイン領域の上方にある第1トレンチコンタクト構造、及び、前記ゲート電極の前記第2側面に隣接する前記第2半導体ソース又はドレイン領域の上方にある第2トレンチコンタクト構造であって、両方ともU字形金属層、及び、前記U字形金属層の全体の上及び上方にあるT字形金属層を有する、第1トレンチコンタクト構造及び第2トレンチコンタクト構造と
を備え、
前記第1半導体ソース又はドレイン領域の上面および前記第2半導体ソース又はドレイン領域の上面は、前記フィンの前記頂部よりも上方にある、
集積回路構造。 - 前記U字形金属層はチタンを含み、前記T字形金属層はコバルトを含む、請求項1に記載の集積回路構造。
- 前記第1トレンチコンタクト構造及び前記第2トレンチコンタクト構造は両方とも、前記T字形金属層の上に第3金属層を更に含む、請求項1または2に記載の集積回路構造。
- 前記第3金属層及び前記U字形金属層は同一の組成を有する、請求項3に記載の集積回路構造。
- 前記第3金属層及び前記U字形金属層はチタンを含み、前記T字形金属層はコバルトを含む、請求項3または4に記載の集積回路構造。
- シリコンを含むフィンであって、頂部及び側壁を有するフィンと、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接するゲート誘電体層と、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接する前記ゲート誘電体層の上方にあるゲート電極であって、第1側面、及び、前記第1側面に対向する第2側面を有するゲート電極と、
前記ゲート電極の前記第1側面に隣接する第1半導体ソース又はドレイン領域、及び、前記ゲート電極の前記第2側面に隣接する第2半導体ソース又はドレイン領域と、
前記ゲート電極の前記第1側面に隣接する前記第1半導体ソース又はドレイン領域の上方にある第1トレンチコンタクト構造、及び、前記ゲート電極の前記第2側面に隣接する前記第2半導体ソース又はドレイン領域の上方にある第2トレンチコンタクト構造であって、両方ともU字形金属層、及び、前記U字形金属層の全体の上及び上方にあるT字形金属層を有する、第1トレンチコンタクト構造及び第2トレンチコンタクト構造と、
を備え、
前記U字形金属層はチタンを含み、前記T字形金属層はコバルトを含む、
集積回路構造。 - シリコンを含むフィンであって、頂部及び側壁を有するフィンと、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接するゲート誘電体層と、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接する前記ゲート誘電体層の上方にあるゲート電極であって、第1側面、及び、前記第1側面に対向する第2側面を有するゲート電極と、
前記ゲート電極の前記第1側面に隣接する第1半導体ソース又はドレイン領域、及び、前記ゲート電極の前記第2側面に隣接する第2半導体ソース又はドレイン領域と、
前記ゲート電極の前記第1側面に隣接する前記第1半導体ソース又はドレイン領域の上方にある第1トレンチコンタクト構造、及び、前記ゲート電極の前記第2側面に隣接する前記第2半導体ソース又はドレイン領域の上方にある第2トレンチコンタクト構造であって、両方ともU字形金属層、及び、前記U字形金属層の全体の上及び上方にあるT字形金属層を有する、第1トレンチコンタクト構造及び第2トレンチコンタクト構造と、
を備え、
前記第1トレンチコンタクト構造及び前記第2トレンチコンタクト構造は両方とも、前記T字形金属層の上に第3金属層を更に含み、
前記第3金属層及び前記U字形金属層は同一の組成を有する、
集積回路構造。 - シリコンを含むフィンであって、頂部及び側壁を有するフィンと、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接するゲート誘電体層と、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接する前記ゲート誘電体層の上方にあるゲート電極であって、第1側面、及び、前記第1側面に対向する第2側面を有するゲート電極と、
前記ゲート電極の前記第1側面に隣接する第1半導体ソース又はドレイン領域、及び、前記ゲート電極の前記第2側面に隣接する第2半導体ソース又はドレイン領域と、
前記ゲート電極の前記第1側面に隣接する前記第1半導体ソース又はドレイン領域の上方にある第1トレンチコンタクト構造、及び、前記ゲート電極の前記第2側面に隣接する前記第2半導体ソース又はドレイン領域の上方にある第2トレンチコンタクト構造であって、両方ともU字形金属層、及び、前記U字形金属層の全体の上及び上方にあるT字形金属層を有する、第1トレンチコンタクト構造及び第2トレンチコンタクト構造と、
を備え、
前記第1トレンチコンタクト構造及び前記第2トレンチコンタクト構造は両方とも、前記T字形金属層の上に第3金属層を更に含み、
前記第3金属層及び前記U字形金属層はチタンを含み、前記T字形金属層はコバルトを含む、
集積回路構造。 - 前記ゲート電極の前記第1側面と前記第1トレンチコンタクト構造との間の第1誘電体スペーサと、
前記ゲート電極の前記第2側面と前記第2トレンチコンタクト構造との間の第2誘電体スペーサと
を更に備える、請求項3から5、7および8のいずれか一項に記載の集積回路構造。 - 前記第3金属層が、前記第1誘電体スペーサおよび前記第2誘電体スペーサに接する、請求項9に記載の集積回路構造。
- 前記ゲート誘電体層は更に、前記第1誘電体スペーサと、前記ゲート電極の前記第1側面との間、及び、前記第2誘電体スペーサと前記ゲート電極の前記第2側面との間にある、請求項9または10に記載の集積回路構造。
- 前記U字形金属層及び前記T字形金属層は組成が異なる、請求項1から11のいずれか一項に記載の集積回路構造。
- 前記第1トレンチコンタクト構造と前記第1半導体ソース又はドレイン領域との間に、及び、前記第2トレンチコンタクト構造と前記第2半導体ソース又はドレイン領域との間に直に挟まれる金属シリサイド層を更に備える、請求項1から12のいずれか一項に記載の集積回路構造。
- 前記金属シリサイド層はチタン及びシリコンを含む、請求項13に記載の集積回路構造。
- 前記第1半導体ソース又はドレイン領域は第1N型半導体ソース又はドレイン領域であり、前記第2半導体ソース又はドレイン領域は第2N型半導体ソース又はドレイン領域である、請求項14に記載の集積回路構造。
- 前記金属シリサイド層は、ニッケル、白金及びシリコンを含む、請求項13に記載の集積回路構造。
- 前記第1半導体ソース又はドレイン領域は第1P型半導体ソース又はドレイン領域であり、前記第2半導体ソース又はドレイン領域は第2P型半導体ソース又はドレイン領域である、請求項16に記載の集積回路構造。
- 前記金属シリサイド層はゲルマニウムを更に含む、請求項16または17に記載の集積回路構造。
- 前記第1半導体ソース又はドレイン領域は、第1埋め込み半導体ソース又はドレイン領域であり、前記第2半導体ソース又はドレイン領域は、第2埋め込み半導体ソース又はドレイン領域である、請求項1から18のいずれか一項に記載の集積回路構造。
- シリコンを含むフィンを形成する段階であって、前記フィンは頂部及び側壁を有する、段階と、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接するゲート誘電体層を形成する段階と、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接する前記ゲート誘電体層の上方にゲート電極を形成する段階であって、前記ゲート電極は、第1側面、及び、前記第1側面に対向する第2側面を有する、段階と、
前記ゲート電極の前記第1側面に隣接する第1半導体ソース又はドレイン領域、及び、前記ゲート電極の前記第2側面に隣接する第2半導体ソース又はドレイン領域を形成する段階と、
前記ゲート電極の前記第1側面に隣接する前記第1半導体ソース又はドレイン領域の上方にある第1トレンチコンタクト構造、及び、前記ゲート電極の前記第2側面に隣接する前記第2半導体ソース又はドレイン領域の上方にある第2トレンチコンタクト構造を形成する段階であって、前記第1トレンチコンタクト構造及び前記第2トレンチコンタクト構造は両方とも、U字形金属層、及び、前記U字形金属層の全体の上及び上方にあるT字形金属層を有する、段階と
を備え、
前記U字形金属層はチタンを含み、前記T字形金属層はコバルトを含む、
集積回路構造を製造する方法。 - シリコンを含むフィンを形成する段階であって、前記フィンは頂部及び側壁を有する、段階と、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接するゲート誘電体層を形成する段階と、
前記フィンの前記頂部の上方にあり、前記フィンの前記側壁に横方向に隣接する前記ゲート誘電体層の上方にゲート電極を形成する段階であって、前記ゲート電極は、第1側面、及び、前記第1側面に対向する第2側面を有する、段階と、
前記ゲート電極の前記第1側面に隣接する第1半導体ソース又はドレイン領域、及び、前記ゲート電極の前記第2側面に隣接する第2半導体ソース又はドレイン領域を形成する段階と、
前記ゲート電極の前記第1側面に隣接する前記第1半導体ソース又はドレイン領域の上方にある第1トレンチコンタクト構造、及び、前記ゲート電極の前記第2側面に隣接する前記第2半導体ソース又はドレイン領域の上方にある第2トレンチコンタクト構造を形成する段階であって、前記第1トレンチコンタクト構造及び前記第2トレンチコンタクト構造は両方とも、U字形金属層、及び、前記U字形金属層の全体の上及び上方にあるT字形金属層を有する、段階と
を備え、
前記第1トレンチコンタクト構造及び前記第2トレンチコンタクト構造は両方とも、前記T字形金属層の上に第3金属層を更に含み、
前記第3金属層及び前記U字形金属層は同一の組成を有する、
集積回路構造を製造する方法。 - 前記U字形金属層及び前記T字形金属層は組成が異なる、請求項20または21に記載の方法。
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