JP5361713B2 - ウェハ温度を決定する方法 - Google Patents
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/20—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using thermoluminescent materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0003—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter
- G01J5/0007—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiant heat transfer of samples, e.g. emittance meter of wafers or semiconductor substrates, e.g. using Rapid Thermal Processing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0806—Focusing or collimating elements, e.g. lenses or concave mirrors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0831—Masks; Aperture plates; Spatial light modulators
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0846—Optical arrangements having multiple detectors for performing different types of detection, e.g. using radiometry and reflectometry channels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/12—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance
- G01K11/125—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in colour, translucency or reflectance using changes in reflectance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K19/00—Testing or calibrating calorimeters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Radiation Pyrometers (AREA)
Description
較正ウェハの第1のサイドに向かって入射光線を向け、
前記ウェハ内の光路を横切り、反射面で反射した少なくとも一つの光線を有する光エネルギーを検出し、なお、反射面は前記較正ウェハの第1のサイドとは異なる、
検出されたエネルギーに基づきウェハの吸収率を決定し、
その吸収率に基づきウェハの温度を決定する、
ことを含む方法である。
第1の選択された温度領域のために、較正光源から目標物を介して移動したエネルギーの測定に基づいて目標物の絶対温度を決定することと、
第2の選択された温度領域のために、光が目標物の中での少なくとも一つの反射を有する光路を移動した後で、目標物から反射された光に基づき目標物の絶対温度を決定することを含む。少なくとも一つの温度測定器は、第1及び第2の選択された温度領域における絶対温度からの変化を明らかにするために較正されてもよい。目標物は較正ウェハを有し、温度測定器はパイロメータを有しても良い。
それらは、もし、ウェハの裏側表面がラフであるなら、それらは使用が比較的困難である。その理由は、これは光の散乱に繋がり、それは、ウェハ内の吸収および反射を抑制するためのブリュースター(Brewster)角入射アプローチの効果の両方に影響を与えるからである。
Claims (13)
- 較正ウェハの温度を決定するための方法であって、
前記方法は、
較正ウェハの第1のサイドに向かって、光を方向付けるステップを有し、
前記較正ウェハの少なくとも一部は、温度によって変化する第1の周知の波長での光吸収および温度によって変化する第2の周知の波長での光路長を有し、
前記方法は、
前記較正ウェハを加熱するステップと、
前記較正ウェハ内の光路を伝わり、そして、前記較正ウェハの第1のサイドとは異なる反射面で反射される、少なくとも一つの光線を有する光エネルギーを検出するステップと、
前記検出された光エネルギーに基づき、前記第1の周知の波長で前記較正ウェハの吸収特性を測定するステップと、
前記吸収特性に基づき、前記較正ウェハの絶対温度値を決定するステップと、
前記較正ウェハの少なくとも一部を通る光路長の対応する変化に影響される測定に基づく温度の変化を決定するステップと、
前記絶対温度の測定および温度変化の測定の両方に基づき、前記較正ウェハの温度を決定するステップと、
を有することを特徴とする方法。 - 前記較正ウェハは、単一スラブの材料のみを具える、
請求項1に記載の方法。 - 前記較正ウェハは、2層を有する、
請求項1に記載の方法。 - 前記第1の周知の波長での前記吸収特性および前記第2の周知の波長での前記光路長の前記変化は、それぞれの波長で前記較正ウェハを通る光を検出することによって測定される、
請求項1に記載の方法。 - 前記較正ウェハの前記第1のサイドに向かって方向付けられた前記光の少なくとも一部は、インコヒレント光源によって放射される、
請求項1に記載の方法。 - 前記較正ウェハは、シリコンを具える、
請求項1に記載の方法。 - 前記第2の周知の波長は、約1.55ミクロンである、
請求項1に記載の方法。 - 前記較正ウェハの前記第1のサイドに向かって方向付けられた前記光の少なくとも一部は、コヒレント光源によって放射される、
請求項1に記載の方法。 - 前記較正ウェハの前記第1のサイドに向かって方向付けられた前記光は、前記第1の周知の波長でインコヒレント光源によって放射された光と、前記第2の周知の波長でコヒレント光源によって放射された光と、を具える、
請求項1に記載の方法。 - 前記較正ウェハが回転する間に、前記絶対温度の測定および温度変化の測定は実行され、
前記両方の測定は、前記較正ウェハ上の同一半径で実行される、
請求項1に記載の方法。 - 温度スケールは、前記絶対温度の測定および温度変化の測定に基づいて形成される、
請求項1に記載の方法。 - ウェハの温度を決定するための方法であって、
前記方法は、
前記ウェハの第1のサイドに向かって、光を方向付けるステップと、
前記ウェハ内の光路を伝わり、そして、前記ウェハの第1のサイドとは異なる反射面で反射される、少なくとも一つの光線を有する光エネルギーを検出するステップと、
前記検出された光エネルギーに基づき、前記第1の波長で前記ウェハの吸収特性を測定するステップと、
前記吸収特性に基づき、前記ウェハの第1の絶対温度値T1を決定するステップと、
前記ウェハの温度を第2の温度T2に変化させるステップと、
前記第1の温度T1から前記第2の温度T2に変化する際の前記ウェハを通る光路長の変化を決定するステップと、
光路長の前記変化から、対応するウェハ温度の変化を決定するステップと、
前記決定された第1の温度T1と、前記第1の温度T1から前記第2の温度T2に変化する際の前記決定されたウェハ温度の変化と、に基づいて、前記第2の温度T2を決定するステップと、
を有することを特徴とする方法。 - 前記吸収特性は、前記第1の波長で前記ウェハの透過率を測定することによって測定される、
請求項12に記載の方法。
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US11/478,312 | 2006-06-29 | ||
US11/478,312 US7543981B2 (en) | 2006-06-29 | 2006-06-29 | Methods for determining wafer temperature |
PCT/US2007/072488 WO2008003080A2 (en) | 2006-06-29 | 2007-06-29 | Methods for determining wafer temperature |
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JP2009543358A JP2009543358A (ja) | 2009-12-03 |
JP5361713B2 true JP5361713B2 (ja) | 2013-12-04 |
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US (3) | US7543981B2 (ja) |
JP (1) | JP5361713B2 (ja) |
KR (1) | KR101519527B1 (ja) |
CN (2) | CN102156008B (ja) |
WO (1) | WO2008003080A2 (ja) |
Families Citing this family (71)
Publication number | Priority date | Publication date | Assignee | Title |
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US7734439B2 (en) * | 2002-06-24 | 2010-06-08 | Mattson Technology, Inc. | System and process for calibrating pyrometers in thermal processing chambers |
US20050106876A1 (en) * | 2003-10-09 | 2005-05-19 | Taylor Charles A.Ii | Apparatus and method for real time measurement of substrate temperatures for use in semiconductor growth and wafer processing |
JP2009500851A (ja) * | 2005-07-05 | 2009-01-08 | マットソン テクノロジー インコーポレイテッド | 半導体ウェハの光学的特性を求めるための方法およびシステム |
EP1952130A1 (en) * | 2005-11-04 | 2008-08-06 | The University Of Queensland | Method of determining the presence of a mineral within a material |
US7946759B2 (en) * | 2007-02-16 | 2011-05-24 | Applied Materials, Inc. | Substrate temperature measurement by infrared transmission |
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CN101512744A (zh) | 2009-08-19 |
WO2008003080A3 (en) | 2009-03-19 |
US20120201271A1 (en) | 2012-08-09 |
CN102156008B (zh) | 2017-03-01 |
KR101519527B1 (ko) | 2015-05-12 |
US20080002753A1 (en) | 2008-01-03 |
US8157439B2 (en) | 2012-04-17 |
CN102156008A (zh) | 2011-08-17 |
JP2009543358A (ja) | 2009-12-03 |
KR20090035550A (ko) | 2009-04-09 |
US7543981B2 (en) | 2009-06-09 |
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