JP5710209B2 - 電磁波給電機構およびマイクロ波導入機構 - Google Patents
電磁波給電機構およびマイクロ波導入機構 Download PDFInfo
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- H—ELECTRICITY
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- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/511—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using microwave discharges
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32211—Means for coupling power to the plasma
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32211—Means for coupling power to the plasma
- H01J37/3222—Antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32211—Means for coupling power to the plasma
- H01J37/32229—Waveguides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32293—Microwave generated discharge using particular waveforms, e.g. polarised waves
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- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32311—Circuits specially adapted for controlling the microwave discharge
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
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- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
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- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
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- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
- H05H1/461—Microwave discharges
- H05H1/4622—Microwave discharges using waveguides
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
- H05H1/461—Microwave discharges
- H05H1/463—Microwave discharges using antennas or applicators
Description
図3はマイクロ波導入機構41の縦断面図、図4はマイクロ波導入機構41の給電機構を示す横断面図である。マイクロ波導入機構41は、マイクロ波を伝送する同軸構造の導波路44と、導波路44を伝送されたマイクロ波をチャンバ1内に放射するアンテナ部43とを有している。そして、マイクロ波導入機構41からチャンバ1内に放射されたマイクロ波がチャンバ1内の空間で合成され、チャンバ1内で表面波プラズマが形成されるようになっている。
まず、ウエハWをチャンバ1内に搬入し、サセプタ11上に載置する。そして、プラズマガス供給源27から配管28およびプラズマガス導入部材26を介してチャンバ1内にプラズマガス、例えばArガスを導入しつつ、マイクロ波プラズマ源2からマイクロ波をチャンバ1内に導入して表面波プラズマを生成する。
入射波反射波モニターは、マイクロ波供給部40からチャンバ1に導かれる入射波と、プラズマ発生に寄与することなく反射によりマイクロ波供給部40に戻ってくる反射波とをモニターするものであり、通常、マイクロ波を用いたプラズマ処理装置には設けられている。図10に示すように、本実施形態においては、入射波反射波モニター120は、入射波と反射波のいずれか一方のマイクロ波による電流を取り出すことが可能な方向性結合器121と、方向性結合器121が取り出した電流を検出する検出器122とを有している。
γ=−20log(IA/IB)
2;マイクロ波プラズマ源
11;サセプタ
12;支持部材
16;排気装置
20;シャワープレート
30;マイクロ波出力部
40;マイクロ波供給部
41;マイクロ波導入機構
43;アンテナ部
44;導波路
52;外側導体
53;内側導体
54;給電機構
55;マイクロ波電力導入ポート
56;同軸線路
58;反射板
59;遅波材
60;チューナ
81;平面スロットアンテナ
90;給電アンテナ
91;アンテナ本体
92;第1の極
93;第2の極
94;反射部
83;天板
100;表面波プラズマ処理装置
110;制御部
120;入射波反射波モニター
121;方向性結合器
122;検出器
124;スリット
125;板状導体
127;調整器
W;ウエハ
Claims (9)
- 同軸構造の導波路へ電磁波電力を供給する電磁波給電機構であって、
前記同軸構造の導波路の側部に設けられ、給電線が接続される電力導入ポートと、
前記給電線に接続され、前記導波路の内部に電磁波電力を放射する給電アンテナと
を具備し、
前記給電アンテナは、前記給電線に接続された第1の極と、前記導波路の内側導体に接触する第2の極とを有するアンテナ本体と、前記アンテナ本体の両側から前記内側導体の外側に沿って延び、リング状に形成された反射部とを有し、
前記アンテナ本体に入射された電磁波と前記入射された電磁波が前記反射部で反射された電磁波とで前記給電アンテナの位置に定在波を形成し、その定在波により発生する誘導磁界および誘導電界の連鎖作用により電磁波電力が前記導波路を伝播することを特徴とする電磁波給電機構。 - 前記導波路の前記電磁波電力が伝播する方向と反対側に設けられた反射板をさらに有し、前記給電アンテナから供給された電磁波電力を前記反射板で反射させて前記導波路を伝播させることを特徴とする請求項1に記載の電磁波給電機構。
- 前記反射板と前記給電アンテナとの間に設けられた遅波材をさらに有し、電磁波の実効波長を短くすることを特徴とする請求項2に記載の電磁波給電機構。
- チャンバ内に表面波プラズマを形成するための表面波プラズマ源に用いるマイクロ波導入機構であって、
同軸構造をなす導波路と、
前記同軸構造の導波路の側部に設けられ、同軸線路が接続される電力導入ポートと、
前記同軸線路の内側導体に接続され、前記導波路の内部に電磁波電力を放射する給電アンテナと、
前記導波路に供給されたマイクロ波を前記チャンバ内に放射するマイクロ波放射アンテナを有するアンテナ部と
を具備し、
前記給電アンテナは、前記同軸線路の内側導体に接続された第1の極と、前記導波路の内側導体に接触する第2の極とを有するアンテナ本体と、前記アンテナ本体の両側から前記導波路の前記内側導体の外側に沿って延び、リング状に形成された反射部とを有し、
前記アンテナ本体に入射された電磁波と前記入射された電磁波が前記反射部で反射された電磁波とで前記給電アンテナの位置に定在波を形成し、その定在波により発生する誘導磁界および誘導電界の連鎖作用により電磁波電力が前記導波路を伝播することを特徴とするマイクロ波導入機構。 - 前記導波路の前記電磁波電力が伝播する方向と反対側に設けられた反射板をさらに有し、前記給電アンテナから供給された電磁波電力を前記反射板で反射させて前記導波路を伝播させることを特徴とする請求項4に記載のマイクロ波導入機構。
- 前記反射板と前記給電アンテナとの間に設けられた遅波材をさらに有し、電磁波の実効波長を短くすることを特徴とする請求項5に記載のマイクロ波導入機構。
- 前記導波路に設けられ、前記導波路を通るマイクロ波のうち、前記チャンバに向かう入射波と、反射により戻ってくる反射波のいずれかに基づく電流を取り出す方向性結合器と、前記方向性結合器が取り出した電流を検出する検出器とを有する入射波反射波モニターをさらに具備することを特徴とする請求項4から請求項6のいずれか1項に記載のマイクロ波導入機構。
- 前記方向性結合器は、前記同軸構造の導波路の外側導体に形成されたスリットと、前記スリット内に設けられた板状導体と、前記板状導体に流れる電流を取り出す一対の導電ピンと、前記外側導体の外側に前記板状導体に対向するように、かつ前記板状導体との距離を調節可能に設けられた導電体からなる調整器とを有し、前記スリットは、前記調整器に対向する部分が前記調整器に対応するように広がった形状をなすことを特徴とする請求項7に記載のマイクロ波導入機構。
- 前記電力導入ポートと前記アンテナ部との間に設けられ、前記チャンバ内の負荷のインピーダンスを前記表面波プラズマ源に搭載されたマイクロ波電源の特性インピーダンスに整合させるチューナをさらに具備し、前記チューナは、前記導波路の外側導体と内側導体の間に設けられ、内側導体の長手方向に沿って移動可能な、環状をなし、誘電体からなるスラグを有し、前記方向性結合器は、前記電力導入ポートと前記スラグとの間、または/および前記スラグと前記アンテナ部の間に設けられていることを特徴とする請求項7または請求項8に記載のマイクロ波導入機構。
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JP2010241142A JP5710209B2 (ja) | 2010-01-18 | 2010-10-27 | 電磁波給電機構およびマイクロ波導入機構 |
CN201180002577.0A CN102474974B (zh) | 2010-01-18 | 2011-01-14 | 电磁波供电机构以及微波导入机构 |
PCT/JP2011/050562 WO2011087094A1 (ja) | 2010-01-18 | 2011-01-14 | 電磁波給電機構およびマイクロ波導入機構 |
KR1020127020891A KR101490572B1 (ko) | 2010-01-18 | 2011-01-14 | 전자파 급전 기구 및 마이크로파 도입 기구 |
TW100101645A TWI523584B (zh) | 2010-01-18 | 2011-01-17 | Electromagnetic wave feeding mechanism and microwave introduction mechanism |
US13/551,122 US9072158B2 (en) | 2010-01-18 | 2012-07-17 | Electromagnetic-radiation power-supply mechanism for exciting a coaxial waveguide by using first and second poles and a ring-shaped reflection portion |
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JP2010008510 | 2010-01-18 | ||
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JP2010241142A JP5710209B2 (ja) | 2010-01-18 | 2010-10-27 | 電磁波給電機構およびマイクロ波導入機構 |
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KR (1) | KR101490572B1 (ja) |
CN (1) | CN102474974B (ja) |
TW (1) | TWI523584B (ja) |
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