JP2008520110A - ゲート及びチャネル内に歪を誘起させてcmosトランジスタの性能を向上させる方法 - Google Patents
ゲート及びチャネル内に歪を誘起させてcmosトランジスタの性能を向上させる方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 56
- 230000001939 inductive effect Effects 0.000 title description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 19
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 19
- 239000004065 semiconductor Substances 0.000 claims abstract description 19
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 15
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 230000000295 complement effect Effects 0.000 claims abstract description 5
- 239000004020 conductor Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 20
- 150000002500 ions Chemical class 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 238000000059 patterning Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 17
- 230000000593 degrading effect Effects 0.000 abstract description 2
- 230000005669 field effect Effects 0.000 description 17
- 238000000137 annealing Methods 0.000 description 15
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 10
- 229920005591 polysilicon Polymers 0.000 description 9
- 229910021417 amorphous silicon Inorganic materials 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 239000007943 implant Substances 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 229910021332 silicide Inorganic materials 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical group [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 238000004151 rapid thermal annealing Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 238000010849 ion bombardment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
【解決手段】 相補型金属酸化物半導体トランジスタを製造する方法は、異なる型のトランジスタ、例えばN型金属酸化物半導体(NMOS)トランジスタ及びP型金属酸化物半導体(PMOS)トランジスタ(第1及び第2型トランジスタ)を基板(12)上に形成する。この方法は、これらのNMOSトランジスタ及びPMOSトランジスタ上に任意の酸化物層を形成し、次いでNMOSトランジスタ及びPMOSトランジスタを硬い材料(50)、例えば窒化ケイ素層で覆う。この後、この方法は、この硬い材料層(50)の一部をパターン形成し、硬い材料層がNMOSトランジスタ上にのみ残るようにする。次に、この方法は、NMOSトランジスタを加熱し(178、204)、次いで硬い材料層(50)の残存部分を除去する。PMOSトランジスタ(PFET)のゲート(20)又はチャネル領域内に応力を生じさせることなく、NMOSトランジスタ(NFET)のゲート(22)内に圧縮応力、チャネル領域内に引張応力(70)を生じさせることによって、この方法は、PFETの性能を低下させることなく、NFETの性能を改善する。
【選択図】 図9
Description
本発明のこれら及びその他の態様を以下でさらに詳細に説明する。
本発明は好ましい実施形態に関して説明されたが、当業者は、本発明が添付の特許請求の範囲の精神及び範囲内の変更を実施できることを認識する。
14:浅いトレンチ分離(STI)領域
16:ゲート酸化物
20:ゲート
22:ゲート
40:側壁スペーサ
65:シリサイド領域
70:引張応力
Claims (23)
- トランジスタを製造する方法であって、
ゲート導体(22)を有する第1型トランジスタを基板(12)上に形成するステップと、
前記第1型トランジスタを硬質層(50)で覆うステップと、
前記第1型トランジスタを加熱して(178)、前記第1型トランジスタ内に引張応力(70)を生じさせるステップと、
を含む方法。 - 前記硬質層(50)を形成する前に、前記第1型トランジスタ上に酸化物層(52)を形成するステップをさらに含む、請求項1に記載の方法。
- 前記硬質層(50)が窒化ケイ素及び炭化ケイ素の少なくとも1つを含む、請求項1に記載の方法。
- 前記硬質層(50)で前記第1型トランジスタを覆う前に、前記第1型トランジスタのゲート(22)にイオンを注入するステップをさらに含む、請求項1に記載の方法。
- 前記基板(12)がさらに、前記硬質層(50)で覆われていない他のトランジスタを含み、前記加熱プロセス(178)が、前記硬質層(50)で覆われていない他のトランジスタのチャネル領域内に引張応力を生じさせることなく、前記第1型トランジスタのチャネル領域内に引張応力(70)を生じさせる、請求項1に記載の方法。
- 前記加熱プロセス(178)の間、前記第1型トランジスタのゲート導体(22)の体積膨張を制限し、結果として前記第1型トランジスタの前記ゲート導体(22)内に圧縮応力を生じさせる、請求項1に記載の方法。
- 前記第1型トランジスタの前記ゲート導体(22)内の前記圧縮応力が、前記第1型トランジスタのチャネル領域内に引張応力(70)を生じさせる、請求項6に記載の方法。
- 相補型トランジスタの製造方法であって、
ゲート導体(22)を有する第1型トランジスタ及びゲート導体(20)を有する第2型トランジスタを、基板(12)上に形成するステップと、
前記第1型トランジスタ及び前記第2型トランジスタを硬質層(50)で覆うステップと、
前記硬質層(50)の一部をパターン形成して、前記硬質層(50)を前記第1型トランジスタ上にのみ残すステップと、
前記第1型トランジスタを加熱する(178)ステップと、
を含む方法。 - 前記硬質層(50)を前記第1型トランジスタ及び前記第2型トランジスタ上に形成する前に、前記第1型トランジスタ及び前記第2型トランジスタ上に酸化物層(52)を形成するステップをさらに含む、請求項8に記載の方法。
- 前記硬質層(50)が窒化ケイ素及び炭化ケイ素の少なくとも1つを含む、請求項8に記載の方法。
- 前記加熱プロセス(178)が、前記硬質層(50)によって覆われた前記第1型トランジスタのチャネル領域内に引張応力(70)を生じさせる、請求項8に記載の方法。
- 前記加熱プロセス(178)が、前記第2型トランジスタのチャネル領域内に引張応力を生じさせることなく、前記第1型トランジスタのチャネル領域内に引張応力(70)を生じさせる、請求項8に記載の方法。
- 前記加熱プロセス(178)の間、前記第1型トランジスタのゲート導体(22)の体積膨張を制限し、結果として前記第1型トランジスタの前記ゲート導体(22)内に圧縮応力を生じさせる、請求項8に記載の方法。
- 前記第1型トランジスタの前記ゲート導体(22)内の前記圧縮応力が、前記第1型トランジスタのチャネル領域内に引張応力(70)を生じさせる、請求項13に記載の方法。
- 前記第1型トランジスタがN型金属酸化物半導体(NMOS)トランジスタであり、前記第2型トランジスタがP型金属酸化物半導体(PMOS)トランジスタである、請求項8から請求項14のいずれか1項に記載の方法。
- 相補型トランジスタの製造方法であって、
ゲート導体(22)を有する第1型トランジスタ及びゲート導体(20)を有する第2型トランジスタを基板(12)上に形成するステップと、
前記第2型トランジスタをマスク(198)で保護するステップと、
前記第1型トランジスタの中にイオンを注入する(200)ステップと、
前記第1型トランジスタ及び前記第2型トランジスタを硬質層(50)で覆うステップと、
前記第1型トランジスタ及び前記第2型トランジスタを加熱する(204)ステップと、
を含む方法。 - 前記硬質層(50)を前記第1型トランジスタ及び前記第2型トランジスタ上に形成する前に、前記第1型トランジスタ及び前記第2型トランジスタ上に酸化物層(52)を形成するステップをさらに含む、請求項16に記載の方法。
- 前記硬質層(50)が窒化ケイ素及び炭化ケイ素の少なくとも1つを含む、請求項16に記載の方法。
- 前記加熱プロセス(204)が、前記第1型トランジスタのチャネル領域内に引張応力を生じさせる、請求項16に記載の方法。
- 前記加熱プロセス(204)が、前記第2型トランジスタのチャネル領域内に引張応力を生じさせることなく、前記第1型トランジスタのチャネル領域内に引張応力を生じさせる、請求項16に記載の方法。
- 前記加熱プロセス(204)の間、前記第1型トランジスタのゲート導体(22)の体積膨張を制限し、結果として前記第1型トランジスタの前記ゲート導体(22)内に圧縮応力を生じさせる、請求項16に記載の方法。
- 前記第1型トランジスタの前記ゲート導体(22)内の前記圧縮応力が、前記第1型トランジスタのチャネル領域内に引張応力を生じさせる、請求項21に記載の方法。
- 前記第1型トランジスタがN型金属酸化物半導体(NMOS)トランジスタであり、前記第2型トランジスタがP型金属酸化物半導体(PMOS)トランジスタである、請求項16から請求項22のいずれか1項に記載の方法。
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US10/904,461 US20060099765A1 (en) | 2004-11-11 | 2004-11-11 | Method to enhance cmos transistor performance by inducing strain in the gate and channel |
PCT/US2005/041051 WO2006053258A2 (en) | 2004-11-11 | 2005-11-10 | Method to enhance cmos transistor performance by inducing strain in the gate and channel |
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US20070275522A1 (en) | 2007-11-29 |
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US20060099765A1 (en) | 2006-05-11 |
KR101063360B1 (ko) | 2011-09-07 |
EP1815506A4 (en) | 2009-06-10 |
EP1815506A2 (en) | 2007-08-08 |
WO2006053258A2 (en) | 2006-05-18 |
KR20070084030A (ko) | 2007-08-24 |
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