JP2011517849A - プラズマイオン注入中にドーパント濃度を測定するための方法 - Google Patents
プラズマイオン注入中にドーパント濃度を測定するための方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 201
- 239000002019 doping agent Substances 0.000 title claims abstract description 143
- 238000005468 ion implantation Methods 0.000 title description 28
- 239000000758 substrate Substances 0.000 claims abstract description 273
- 230000008569 process Effects 0.000 claims abstract description 153
- 230000003287 optical effect Effects 0.000 claims abstract description 44
- 230000003247 decreasing effect Effects 0.000 claims abstract description 7
- 229910052796 boron Inorganic materials 0.000 claims description 24
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 23
- 229910052785 arsenic Inorganic materials 0.000 claims description 15
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims description 12
- 239000011574 phosphorus Substances 0.000 claims description 12
- 238000002513 implantation Methods 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 229910052787 antimony Inorganic materials 0.000 claims description 8
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229910052732 germanium Inorganic materials 0.000 claims description 7
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 2
- 238000001514 detection method Methods 0.000 abstract description 3
- 210000002381 plasma Anatomy 0.000 description 119
- 239000007789 gas Substances 0.000 description 30
- 150000002500 ions Chemical class 0.000 description 17
- 239000002243 precursor Substances 0.000 description 15
- 230000005855 radiation Effects 0.000 description 15
- 238000012545 processing Methods 0.000 description 12
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 8
- 238000009826 distribution Methods 0.000 description 8
- 238000010884 ion-beam technique Methods 0.000 description 7
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 6
- 229910015900 BF3 Inorganic materials 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000007654 immersion Methods 0.000 description 5
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical compound [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 description 4
- 238000004980 dosimetry Methods 0.000 description 4
- 239000007943 implant Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 4
- WKFBZNUBXWCCHG-UHFFFAOYSA-N phosphorus trifluoride Chemical compound FP(F)F WKFBZNUBXWCCHG-UHFFFAOYSA-N 0.000 description 4
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical group [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- -1 hydrogen ions Chemical class 0.000 description 2
- 239000012688 phosphorus precursor Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000000231 atomic layer deposition Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/66—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light electrically excited, e.g. electroluminescence
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- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
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Abstract
Description
Claims (15)
- プラズマドーピングプロセス中に基板表面のドーピング濃度を検出するための方法において、
プロセスチャンバー内で基板を位置決めするステップであって、前記基板は、表側および裏側を有し、約250℃未満の温度である、ステップと、
前記プロセスチャンバー内で前記基板の上にプラズマを生成するステップと、
前記プラズマによって生成される光を前記基板を通って伝送するステップであって、前記光は、前記基板の前記表側に入り、前記裏側から出る、ステップと、
前記基板の下に位置決めされるセンサーによって前記光を受け取るステップと、
前記センサーによって受け取られる前記光に比例する信号を生成するステップと、
ドーピングプロセス中にドーパントを前記基板に注入するステップと、
前記ドーピングプロセス中に前記センサーによって受け取られる前記光の減少する量に比例する多重光信号を生成するステップと、
いったん前記基板が前記ドーパントの最終濃度を含むと前記センサーによって受け取られる前記光に比例する終点信号を生成するステップと、
前記基板の前記ドーパント注入を中止するステップとを含む方法。 - 前記ドーパントの増加する濃度に比例する多重信号を生成するステップをさらに含む、請求項1に記載の方法。
- 前記光は、赤外光、可視光、紫外光、またはそれらの組合せを含む、請求項1に記載の方法。
- 前記光は、赤外光を含み、前記基板の温度は、前記ドーピングプロセス中に約0℃から約90℃の範囲内である、請求項3に記載の方法。
- 前記ドーパントは、ホウ素、リン、ヒ素、アンチモン、窒素、酸素、水素、炭素、ゲルマニウム、およびそれらの組合せから成る群から選択され、前記ドーパントの前記最終濃度は、約5×1015cm−2から約1×1017cm−2の範囲内である、請求項1に記載の方法。
- プラズマドーピングプロセス中に基板表面のドーピング濃度を検出するための方法において、
プロセスチャンバー内で基板を位置決めするステップであって、前記基板は、表側および裏側を有し、約250℃未満の温度である、ステップと、
前記プロセスチャンバー内で前記基板の上にプラズマを生成するステップと、
前記基板を通って光を伝送するステップであって、前記光は、前記基板の前記裏側に入り、前記表側から出て、前記光は、前記基板の下に位置決めされる光源によって生成される、ステップと、
前記基板の上に位置決めされるセンサーによって前記光を受け取るステップと、
前記センサーによって受け取られる前記光に比例する信号を生成するステップと、
ドーピングプロセス中にドーパントを前記基板に注入するステップと、
前記ドーピングプロセス中に前記センサーによって受け取られる前記光の減少する量に比例する多重光信号を生成するステップと、
いったん前記基板が前記ドーパントの最終濃度を含むと前記センサーによって受け取られる前記光に比例する終点信号を生成するステップと、
前記基板の前記ドーパント注入を中止するステップとを含む方法。 - 前記光源は、赤外レーザーまたはレーザーに結合される光ケーブルである、請求項6に記載の方法。
- 前記光源は、基板支持アセンブリ上にまたは内部に配置され、前記センサーは、シャワーヘッドアセンブリ上にまたは中に配置され、前記光源は、前記光を実質的に前記センサーの方へ向けるように位置決めされる、請求項6に記載の方法。
- 前記光源は、遠隔光源に結合される光ケーブルであり、前記遠隔光源は、レーザービームを放出する、請求項6に記載の方法。
- 前記基板の温度は、前記ドーピングプロセス中に約0℃から約90℃の範囲内である、請求項6に記載の方法。
- 前記ドーパントは、ホウ素、リン、ヒ素、アンチモン、窒素、酸素、水素、炭素、ゲルマニウム、およびそれらの組合せから成る群から選択され、前記ドーパントの前記最終濃度は、約5×1015cm−2から約1×1017cm−2の範囲内である、請求項6に記載の方法。
- プラズマドーピングプロセス中に基板表面のドーピング濃度を検出するための方法において、
プロセスチャンバー内で基板を位置決めするステップであって、前記基板は、表側および裏側を有し、約250℃未満の温度である、ステップと、
前記プロセスチャンバー内で前記基板の上にプラズマを生成するステップと、
前記基板の上に位置決めされる光源によって光を生成するステップと、
前記光を前記光源から前記基板の前記表側に前記基板の前記表側を横断して広がる平面に対して約75°から約90°の範囲内の角度で伝送し、前記光を前記表側から前記基板の上に位置決めされるセンサーの方へ反射するステップと、
前記センサーによって受け取られる前記光に比例する信号を生成するステップと、
ドーピングプロセス中にドーパントを前記基板に注入するステップと、
前記ドーピングプロセス中に前記センサーによって受け取られる前記光の増加する量に比例する多重光信号を生成するステップと、
いったん前記基板が前記ドーパントの最終濃度を含むと前記センサーによって受け取られる前記光に比例する終点信号を生成するステップと、
前記基板の前記ドーパント注入を中止するステップとを含む方法。 - 前記基板の温度は、前記ドーピングプロセス中に約0℃から約90℃の範囲内である、請求項12に記載の方法。
- 前記光源は、赤外レーザーまたはレーザーに結合される光ケーブルである、請求項12に記載の方法。
- 前記光源は、シャワーヘッドアセンブリに結合されるまたは内部にあり、前記センサーは、前記シャワーヘッド上に配置されるまたは結合され、前記光源は、前記光を前記基板から離れて前記センサーの方へ反射するように位置決めされる、請求項12に記載の方法。
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TWI459488B (zh) | 2014-11-01 |
JP2012129530A (ja) | 2012-07-05 |
KR20110123777A (ko) | 2011-11-15 |
US7977199B2 (en) | 2011-07-12 |
CN102832151A (zh) | 2012-12-19 |
US7713757B2 (en) | 2010-05-11 |
CN101971317A (zh) | 2011-02-09 |
US20110259268A1 (en) | 2011-10-27 |
WO2010019283A3 (en) | 2010-05-14 |
CN102832151B (zh) | 2016-08-24 |
WO2010019283A2 (en) | 2010-02-18 |
KR20100125397A (ko) | 2010-11-30 |
TW201003811A (en) | 2010-01-16 |
KR101148343B1 (ko) | 2012-05-24 |
US20100216258A1 (en) | 2010-08-26 |
US20090233384A1 (en) | 2009-09-17 |
JP2013128124A (ja) | 2013-06-27 |
CN101971317B (zh) | 2012-10-10 |
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