JP2005123625A - シリサイド化された電極を有する半導体装置の製造方法 - Google Patents
シリサイド化された電極を有する半導体装置の製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 93
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 47
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- 229910052710 silicon Inorganic materials 0.000 claims abstract description 47
- 239000010703 silicon Substances 0.000 claims abstract description 47
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 39
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- 238000000034 method Methods 0.000 claims description 59
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 50
- 229910052759 nickel Inorganic materials 0.000 claims description 25
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 230000005669 field effect Effects 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
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- 229910052719 titanium Inorganic materials 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910052735 hafnium Inorganic materials 0.000 claims description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 146
- 238000010586 diagram Methods 0.000 description 16
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
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- 150000002739 metals Chemical class 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 6
- PEUPIGGLJVUNEU-UHFFFAOYSA-N nickel silicon Chemical group [Si].[Ni] PEUPIGGLJVUNEU-UHFFFAOYSA-N 0.000 description 5
- 238000001020 plasma etching Methods 0.000 description 5
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- 238000005229 chemical vapour deposition Methods 0.000 description 4
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- HAYXDMNJJFVXCI-UHFFFAOYSA-N arsenic(5+) Chemical compound [As+5] HAYXDMNJJFVXCI-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】 誘電体層及び第1導体を有する第1半導体構造と誘電体層及び第2導体を有する第2半導体構造とを含み、誘電体層に隣接する第1導体の部分が第2導体の対応する部分の仕事関数とは異なる仕事関数を有している半導体ボディーを備えた半導体装置の製造方法に関し、誘電体層が半導体ボディーに適用された後、金属層が誘電体層へ適用され、その後、シリコン層がこの金属層上へ堆積され、更に第1半導体構造の位置でこのシリコン層と金属層とが反応し、金属珪化物を形成し、2つの半導体構造のうちの一方の位置で、シリコン層以外の層、特に金属層をエッチングすることにより、異なる各仕事関数を有する導体のこれらの部分が形成され、加えて、更なる金属層がシリコン層にわたって適用され、第2トランジスタの位置にさらなる金属珪化物を形成するために使用される。
【選択図】図6
Description
誘電体層、および第1導体を含む第1電極を有する第1半導体構造、および、
誘電体層、および第1導体と異なる第2導体を含む第2電極を有する第2半導体構造、この誘電体層に隣接する第2導体の部分は、第1導体の対応部分と異なる仕事関数を有している。
第1ソースおよびドレイン領域を含み、第1伝導タイプのチャンネル領域を有し、さらに、第1ゲート電極を含んでいる第1電界効果トランジスタ、その第1ゲート電極は、誘電体層によりチャンネル領域から分離され、さらに第1導体を含んでいる、および、
第2ソースおよびドレイン領域を含み、さらに、第1伝導タイプと反対の伝導タイプである第2伝導タイプのチャンネル領域を含み、さらに、誘電体層によりチャンネル領域と分離され、第1導体と異なる第2導体を含む第2ゲート電極を含む第2電界効果トランジスタ、この誘電体層に隣接する第2導体の部分は、第1導体の対応部分と異なる仕事関数を有している。
誘電体層、および第1導体を含む第1ゲート電極を有する第1半導体構造、および、
誘電体層、および第1導体と異なる第2導体を含む第2ゲート電極を有する第2半導体構造、この誘電体層に隣接する第2導体の部分は、第1導体の対応部分と異なる仕事関数を有しており、半導体装置は、本発明の方法を用いて製造される。特に、第1および第2の半導体構造はトランジスタであってもよい。
4、6 トランジスタ
8 誘電体層
9、21、31 金属層
11 シリコン層
13、14 ゲート電極
16、18 ソース領域
17、19 ドレイン領域
20、34、35 ニッケル二珪化物
24、25 ニッケル一珪化物
30、40 半導体装置
Claims (14)
- 以下を含む、半導体ボディーを有する半導体装置の製造方法:
誘電体層、および第1導体を含む第1電極を有する第1半導体構造、および、
誘電体層、および第1導体と異なる第2導体を含む第2電極を有する第2半導体構造、この誘電体層に隣接する第2導体の部分は、第1導体の対応部分と異なる仕事関数を有しており、
ここで、誘電体層が半導体ボディーに適用された後、第1金属層が誘電体層上へ適用され、その後、シリコン層がこの金属層へ適用され、さらに、少なくとも1つの半導体構造の位置で、これら2つの層が互いに反応して、この位置で第1金属珪化物を形成し、2つの半導体構造のうちの一方の位置のシリコン層以外の層をエッチングすることにより、異なる仕事関数を有する導体の部分を形成することを特徴としている。 - 第1金属層が、ニッケル、チタニウム、またはコバルトから選択される金属から成る、請求項1に従う方法。
- 第1金属層と誘電体層との間への、非シリサイド化金属層である第2金属層の適用をさらに含む、先行する請求項のうちの1つに従う方法。
- 第2金属層が、モリブデン、タングステン、プラチナ、イリジウム、タンタル、またはハフニウムから選択される金属から成る、請求項3に従う方法。
- 本方法が、第1および第2半導体構造の形成後の第3金属層の堆積をさらに含み、この第3金属層がシリサイド化金属層であり、この第3金属層により、第1および第2半導体構造の少なくとも1つの位置に、さらなる金属珪化物が形成される、先行する請求項のうちの1つに従う方法。
- 第3金属層が、ニッケル、チタニウム、またはコバルトから選択される金属から成る、請求項5に従う方法。
- さらなる金属珪化物が、第1金属珪化物とは異なるシリコン含有率を伴って形成される、請求項5または請求項6のうちの1つに従う方法。
- 第1金属珪化物が二珪化物として形成され、さらなる金属珪化物が一珪化物として形成される、請求項7に従う方法。
- シリコン層以外の層のエッチングが、第1、第2、または第3金属層をエッチングすることにより実行される、先行する請求項のうちの1つに従う方法。
- シリコン層の適用前に、第1または第2金属層がエッチングされる、請求項9に従う方法。
- 第1半導体構造および第2半導体構造が、ゲート電極、およびソースおよびドレイン領域を有する電界効果トランジスタである、先行する請求項のうちの1つに従う方法。
- 第3金属層が、ソースおよびドレイン領域の接触接続に使用される、請求項11に従う方法。
- 以下を含む、半導体ボディーを有する半導体装置:
誘電体層、および第1導体を含む第1ゲート電極を有する第1半導体構造、および、
誘電体層、および第1導体と異なる第2導体を含む第2ゲート電極を有する第2半導体構造、そして、この誘電体層に隣接する第2導体の部分は、第1導体の対応部分(20)と異なる仕事関数を有しており、
半導体装置は、請求項1〜12のうちの1つに従う方法を用いて製造される。 - 第1半導体構造および第2半導体構造が、電界効果トランジスタである、請求項13に従う半導体装置。
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EP1524688A1 (en) | 2005-04-20 |
US7226827B2 (en) | 2007-06-05 |
BE1015723A4 (nl) | 2005-07-05 |
TWI242263B (en) | 2005-10-21 |
US20050145943A1 (en) | 2005-07-07 |
TW200522270A (en) | 2005-07-01 |
EP1524688B1 (en) | 2009-12-09 |
US20070215951A1 (en) | 2007-09-20 |
JP4994585B2 (ja) | 2012-08-08 |
ATE451718T1 (de) | 2009-12-15 |
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