JP5423269B2 - 半導体装置とその製造方法 - Google Patents
半導体装置とその製造方法 Download PDFInfo
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- JP5423269B2 JP5423269B2 JP2009213189A JP2009213189A JP5423269B2 JP 5423269 B2 JP5423269 B2 JP 5423269B2 JP 2009213189 A JP2009213189 A JP 2009213189A JP 2009213189 A JP2009213189 A JP 2009213189A JP 5423269 B2 JP5423269 B2 JP 5423269B2
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- 239000004065 semiconductor Substances 0.000 title claims description 50
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 239000012535 impurity Substances 0.000 claims description 57
- 238000005468 ion implantation Methods 0.000 claims description 48
- 239000000758 substrate Substances 0.000 claims description 34
- 230000001133 acceleration Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 239000010410 layer Substances 0.000 description 20
- 230000015556 catabolic process Effects 0.000 description 19
- 238000009792 diffusion process Methods 0.000 description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 238000000137 annealing Methods 0.000 description 8
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 8
- 229920005591 polysilicon Polymers 0.000 description 8
- 229910021332 silicide Inorganic materials 0.000 description 8
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 6
- 238000002955 isolation Methods 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000002513 implantation Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- XUKUURHRXDUEBC-SXOMAYOGSA-N (3s,5r)-7-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-propan-2-ylpyrrol-1-yl]-3,5-dihydroxyheptanoic acid Chemical compound C=1C=CC=CC=1C1=C(C=2C=CC(F)=CC=2)N(CC[C@@H](O)C[C@H](O)CC(O)=O)C(C(C)C)=C1C(=O)NC1=CC=CC=C1 XUKUURHRXDUEBC-SXOMAYOGSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-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
- 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
- 238000001312 dry etching Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Description
半導体基板の第1導電型の第1トランジスタ用領域及び、前記第1トランジスタ領域内に形成された第1導電型と逆の第2導電型のドレイン領域の上に第1ゲート電極を形成し、
前記第1ゲート電極のドレイン側部分及び前記ドレイン領域を覆う第1のマスクをイオン注入マスクとして、前記第1ゲート電極を貫通する加速エネルギで前記第1導電型の第1不純物をイオン注入して、ソース側領域で第1の深さ、前記第1ゲート電極下方で前記第1の深さより浅い第2の深さを有するチャネルドーズ領域を形成し、
前記第1ゲート電極の前記ドレイン側部分及び前記ドレイン領域を覆う第2のマスク及び前記第1ゲート電極をイオン注入マスクとして前記第2導電型の第2不純物をイオン注入して第1ソースエクステンション領域を形成し、
前記第1ソースエクステンション領域に連続する前記第2導電型のソース領域を形成する
半導体装置を製造する方法
が提供される。
(付記1)
半導体基板の第1導電型の第1トランジスタ用領域上に第1ゲート電極を形成し、
前記第1ゲート電極のドレイン側部分及びドレイン領域を覆う第1のマスクをイオン注入マスクとして、前記第1ゲート電極を貫通する加速エネルギで前記第1導電型の第1不純物をイオン注入して、ソース領域で第1の深さ、前記ゲート電極下方で前記第1の深さより浅い第2の深さを有するチャネルドーズ領域を形成し、
前記第1ゲート電極の前記ドレイン側部分及び前記ドレイン領域を覆う第2のマスク及び前記ゲート電極をイオン注入マスクとして前記第1導電型と逆の第2導電型の第2不純物をイオン注入して第1ソースエクステンション領域を形成し、
半導体装置を製造する方法。
(付記2)
前記チャネルドーズ領域を形成するイオン注入と、前記第1ソースエクステンション領域を形成するイオン注入が、共に基板法線から0度−7度の範囲内の入射角度で行なわれる付記1記載の半導体装置を製造する方法。
(付記3)
前記チャネルドーズ領域を形成するイオン注入が基板法線からソース領域側に20度−45度傾いた入射角度で行なわれ、前記第1ソースエクステンション領域を形成するイオン注入が、基板法線から0度−7度の入射角度で行なわれる付記1記載の半導体装置を製造する方法。
(付記4)
前記第1ゲート電極を形成する前に、前記ゲート電極のドレイン側部分とオーバラップする前記第2導電型のドレイン領域を前記第1トランジスタ用領域に形成する、付記1〜3のいずれか1項記載の半導体装置の製造方法。
(付記5)
前記第2のマスクが、前記第1のマスクである付記1〜4のいずれか1項記載の半導体装置を製造する方法。
(付記6)
前記半導体基板が、第1導電型の第2トランジスタ用領域、第1導電型の第3トランジスタ用領域も含み、前記第2トランジスタ用領域上に第2ゲート電極を、前記第3トランジスタ用領域上に第3ゲート電極を形成し、
前記第1のマスクが前記第2トランジスタ用領域、前記第3トランジスタ用領域を覆い、
前記第2のマスクが前記第3トランジスタ用領域を覆い、前記第2トランジスタ用領域は露出する、
付記1〜4のいずれか1項記載の半導体装置を製造する方法。
(付記7)
前記第2トランジスタ用領域、前記第1トランジスタ用領域を覆う第3のマスク及び前記第3トランジスタ用領域の前記第3ゲート電極をイオン注入マスクとし、前記第3トランジスタ用領域に前記第1導電型の第3不純物を斜めイオン注入してポケット領域を形成し、
前記第3のマスク及び前記第3トランジスタ用領域の前記第3ゲート電極をイオン注入マスクとし、前記第3トランジスタ用領域に前記第2導電型の第4不純物を、前記ポケット領域より浅いピーク位置でイオン注入して第3ソースエクステンション領域を形成する、
付記6記載の半導体装置を製造する方法。
(付記8)
前記ポケット領域のイオン注入は、前記チャネルドーズ領域のイオン注入と較べ、半分以下の深さと5倍以上高いドーズ量を有する付記7記載の半導体装置の製造方法。
(付記9)
前記第1トランジスタ用領域の前記第1ゲート電極のドレイン側側壁から前記ドレイン領域上に所定長延在する絶縁性オフセットマスクと、前記第1ゲート電極のソース側側壁上に形成されたサイドウォールスペーサとを形成し、
前記サイドウォールスペーサ及び前記絶縁性オフセットマスクの外側に第2導電型の拡散領域を形成し、
前記拡散領域上にシリサイド層を形成する、
付記6〜8のいずれか1項に記載の半導体装置を製造する方法。
(付記10)
第1導電型の第1トランジスタ用領域を有する半導体基板と、
前記第1トランジスタ用領域上に形成された第1ゲート電極と、
ソース領域から前記第1ゲート電極下方に形成され、前記ソース領域で第1の深さを有し、前記第1ゲート電極下方で前記第1の深さよりも浅い第2の深さを有する、前記第1導電型のチャネルドーズ領域と、
前記ソース領域に形成され、前記チャネルドーズ領域より浅い、前記第1導電型と逆の第2導電型の第1ソースエクステンション領域と、
を有する半導体装置。
(付記11)
前記チャネルドーズ領域の前記第1の深さを有する領域から前記第2の深さを有する領域に切り換わる位置が、前記第1ゲート電極下方に位置する付記10記載の半導体装置。
(付記12)
前記半導体基板が更に前記第1導電型の第2トランジスタ用領域を有し、
前記第2トランジスタ用領域上に形成された第2ゲート電極と、前記第2ゲート電極のソース側に形成された、前記第2導電型の第2ソースエクステンション領域と、前記第2ソースエクステンション領域を包み込む、前記第1導電型のポケット領域とを有し、
前記ポケット領域は前記チャネルドーズ領域の前記第1の深さの半分以下の第3の深さを有する、
付記10又は11記載の半導体装置。
(付記13)
前記第1トランジスタ用領域に形成され、前記第1ゲート電極とオーバラップするドレイン領域を有する、付記10〜12のいずれか1項記載の半導体装置。
(付記14)
前記第1ゲート電極のドレイン側部分から、前記第1ゲート電極のドレイン側側壁から所定長だけ前記ドレイン領域上に延在する絶縁性オフセットマスクと、前記第1ゲート電極のソース側側壁、及び前記第2ゲート電極の側壁外側に形成された、サイドウォールスペーサと、
前記絶縁性オフセットマスク及び前記サイドウォールスペーサの外側に形成された第2導電型の拡散領域と、
前記拡散領域上に形成されたシリサイド層と、
を有する付記10〜13のいずれか1項記載の半導体装置。
STI 素子分離領域、
PW p型ウェル、
11 LDD領域、
12 ゲート絶縁膜、
13 ポリシリコンゲート電極、
G ゲート電極、
15 チャネルドーズ領域、
16 エクステンション領域、
19 オフセットマスク、
S/D 低抵抗ソース/ドレイン領域、
21,22 シリサイド領域。
Claims (10)
- 半導体基板の第1導電型の第1トランジスタ用領域及び、前記第1トランジスタ領域内に形成された第1導電型と逆の第2導電型のドレイン領域の上に第1ゲート電極を形成し、
前記第1ゲート電極のドレイン側部分及び前記ドレイン領域を覆う第1のマスクをイオン注入マスクとして、前記第1ゲート電極を貫通する加速エネルギで前記第1導電型の第1不純物をイオン注入して、ソース側領域で第1の深さ、前記第1ゲート電極下方で前記第1の深さより浅い第2の深さを有するチャネルドーズ領域を形成し、
前記第1ゲート電極の前記ドレイン側部分及び前記ドレイン領域を覆う第2のマスク及び前記第1ゲート電極をイオン注入マスクとして前記第2導電型の第2不純物をイオン注入して第1ソースエクステンション領域を形成し、
前記第1ソースエクステンション領域に連続する前記第2導電型のソース領域を形成する
半導体装置を製造する方法。 - 前記チャネルドーズ領域を形成するイオン注入と、前記第1ソースエクステンション領域を形成するイオン注入が、共に基板法線から0度−7度の範囲内の入射角度で行なわれる請求項1記載の半導体装置を製造する方法。
- 前記チャネルドーズ領域を形成するイオン注入が基板法線からソース領域側に20度−45度傾いた入射角度で行なわれ、前記第1ソースエクステンション領域を形成するイオン注入が、基板法線から0度−7度の入射角度で行なわれる請求項1記載の半導体装置を製造する方法。
- 前記第2のマスクが、前記第1のマスクである請求項1〜3のいずれか1項記載の半導体装置を製造する方法。
- 前記半導体基板が、第1導電型の第2トランジスタ用領域、第1導電型の第3トランジスタ用領域も含み、前記第2トランジスタ用領域上に第2ゲート電極を、前記第3トランジスタ用領域上に第3ゲート電極を形成し、
前記第1のマスクが前記第2トランジスタ用領域、前記第3トランジスタ用領域を覆い、
前記第2のマスクが前記第3トランジスタ用領域を覆い、前記第2トランジスタ用領域は露出する、
請求項1〜3のいずれか1項記載の半導体装置を製造する方法。 - 前記第2トランジスタ用領域、前記第1トランジスタ用領域を覆う第3のマスク及び前記第3トランジスタ用領域の前記第3ゲート電極をイオン注入マスクとし、前記第3トランジスタ用領域に前記第1導電型の第3不純物を斜めイオン注入してポケット領域を形成し、
前記第3のマスク及び前記第3トランジスタ用領域の前記第3ゲート電極をイオン注入マスクとし、前記第3トランジスタ用領域に前記第2導電型の第4不純物を、前記ポケット領域より浅いピーク位置でイオン注入して第3ソースエクステンション領域を形成する、
請求項5記載の半導体装置を製造する方法。 - 前記ポケット領域のイオン注入は、前記チャネルドーズ領域の前記第1の深さを有する部分のイオン注入と較べ、半分以下の深さと5倍以上高いドーズ量を有する請求項6記載の半導体装置の製造方法。
- 第1導電型の第1トランジスタ用領域を有する半導体基板と、
前記第1トランジスタ用領域上に形成された第1ゲート電極と、
ソース側領域から前記第1ゲート電極下方に形成され、前記ソース側領域で第1の深さを有し、前記第1ゲート電極下方で前記第1の深さよりも浅い第2の深さを有する、前記第1導電型のチャネルドーズ領域と、
前記ソース側領域に形成され、前記チャネルドーズ領域の第1の深さより浅い、前記第1導電型と逆の第2導電型の第1ソースエクステンション領域と、
前記ソースエクステンション領域に連続して前記第1導電型領域内に形成された、前記第2導電型のソース領域と、
を有する半導体装置。 - 前記チャネルドーズ領域の前記第1の深さを有する領域から前記第2の深さを有する領域に切り換わる位置が、前記第1ゲート電極下方に位置する請求項8記載の半導体装置。
- 前記半導体基板が更に前記第1導電型の第2トランジスタ用領域を有し、
前記第2トランジスタ用領域上に形成された第2ゲート電極と、前記第2ゲート電極のソース側に形成された、前記第2導電型の第2ソースエクステンション領域と、前記第2ソースエクステンション領域を包み込む、前記第1導電型のポケット領域とを有し、
前記ポケット領域は前記チャネルドーズ領域の前記第1の深さの半分以下の第3の深さを有する、
請求項8又は9記載の半導体装置。
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US7157784B2 (en) | 2005-01-31 | 2007-01-02 | Texas Instruments Incorporated | Drain extended MOS transistors with multiple capacitors and methods of fabrication |
JP5001522B2 (ja) * | 2005-04-20 | 2012-08-15 | ルネサスエレクトロニクス株式会社 | 半導体集積回路装置の製造方法 |
JP4907920B2 (ja) * | 2005-08-18 | 2012-04-04 | 株式会社東芝 | 半導体装置及びその製造方法 |
JP4832069B2 (ja) * | 2005-12-06 | 2011-12-07 | パナソニック株式会社 | 半導体装置及びその製造方法 |
JP5286701B2 (ja) * | 2007-06-27 | 2013-09-11 | ソニー株式会社 | 半導体装置および半導体装置の製造方法 |
TWI426564B (zh) * | 2007-10-31 | 2014-02-11 | Nat Semiconductor Corp | 特別適合類比應用之具有場效電晶體的半導體架構之構造與製造 |
JP4911158B2 (ja) * | 2008-10-30 | 2012-04-04 | ソニー株式会社 | 半導体装置および固体撮像装置 |
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2009
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Also Published As
Publication number | Publication date |
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JP2011066055A (ja) | 2011-03-31 |
US9123742B2 (en) | 2015-09-01 |
US20120208336A1 (en) | 2012-08-16 |
US20110221000A1 (en) | 2011-09-15 |
US8841725B2 (en) | 2014-09-23 |
US20130178036A1 (en) | 2013-07-11 |
US20130178032A1 (en) | 2013-07-11 |
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