JP2015505420A - 基板処理装置及び方法 - Google Patents
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- 239000000758 substrate Substances 0.000 title claims abstract description 108
- 238000000034 method Methods 0.000 title claims abstract description 79
- 238000005121 nitriding Methods 0.000 claims abstract description 56
- 238000000151 deposition Methods 0.000 claims abstract description 43
- 230000015654 memory Effects 0.000 claims abstract description 31
- 238000003672 processing method Methods 0.000 claims abstract description 20
- 238000004381 surface treatment Methods 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 35
- 239000007789 gas Substances 0.000 claims description 24
- 150000004767 nitrides Chemical class 0.000 claims description 13
- 238000009832 plasma treatment Methods 0.000 claims description 13
- 229910000618 GeSbTe Inorganic materials 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000007740 vapor deposition Methods 0.000 claims description 9
- 229910052787 antimony Inorganic materials 0.000 claims description 6
- 229910052732 germanium Inorganic materials 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910052714 tellurium Inorganic materials 0.000 claims description 5
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 4
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 4
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 229910000763 AgInSbTe Inorganic materials 0.000 claims description 2
- 229910005542 GaSb Inorganic materials 0.000 claims description 2
- 229910005872 GeSb Inorganic materials 0.000 claims description 2
- 229910005898 GeSn Inorganic materials 0.000 claims description 2
- 229910005900 GeTe Inorganic materials 0.000 claims description 2
- 229910018321 SbTe Inorganic materials 0.000 claims description 2
- 229910018219 SeTe Inorganic materials 0.000 claims description 2
- 229910006913 SnSb Inorganic materials 0.000 claims description 2
- 229910004284 Te81Ge15Sb2S2 Inorganic materials 0.000 claims description 2
- 238000010924 continuous production Methods 0.000 claims description 2
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 claims description 2
- FESBVLZDDCQLFY-UHFFFAOYSA-N sete Chemical compound [Te]=[Se] FESBVLZDDCQLFY-UHFFFAOYSA-N 0.000 claims description 2
- 230000008021 deposition Effects 0.000 abstract description 20
- 239000010408 film Substances 0.000 description 94
- 239000010409 thin film Substances 0.000 description 19
- 238000005229 chemical vapour deposition Methods 0.000 description 16
- 238000004140 cleaning Methods 0.000 description 11
- 238000005240 physical vapour deposition Methods 0.000 description 11
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- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- 150000002431 hydrogen Chemical class 0.000 description 9
- 238000005530 etching Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910008482 TiSiN Inorganic materials 0.000 description 3
- -1 chalcogenide compound Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- QRXWMOHMRWLFEY-UHFFFAOYSA-N isoniazide Chemical compound NNC(=O)C1=CC=NC=C1 QRXWMOHMRWLFEY-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
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- 238000013500 data storage Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
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- 238000000427 thin-film deposition Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
Description
Claims (15)
- 相変化メモリを製造する基板処理方法において、
パターン付き基板に下部電極を形成する過程と、
前記下部電極の形成過程により基板の表面に生成又は残存する不純物を除去する表面処理過程と、
前記不純物が除去された基板の表面に対して窒化処理を行う過程と、
前記下部電極の上に相変化膜及び上部電極をこの順に蒸着する過程と、
を含む基板処理方法。 - 前記下部電極を形成する過程は、
基 板に絶縁膜を蒸着した後、下部電極が形成される下部電極コンタクトホールを形成する過程と、
前記コンタクトホールが形成された基板の表面に窒化膜を蒸着する過程と、
前記下部電極コンタクトホールの窒化膜を残して残りの窒化膜を除去する過程と、
を含む請求項1に記載の基板処理方法。 - 前記表面処理は、H2含有ガスを用いたプラズマ処理である請求項1に記載の基板処理方法。
- 前記窒化処理は、窒素含有雰囲気下での熱処理又はプラズマ処理である請求項1から請求項3のうちのいずれか1項に記載の基板処理方法。
- 前記熱処理は、N2、N2O、NH3ガスのうちの少なくとも一種を流出しながら行う請求項4に記載の基板処理方法。
- 前記熱処理は、8[Torr]以上の圧力、700[℃]以上の温度条件下で行う請求項5に記載の基板処理方法。
- 前記熱処理は、N2、N2O、NH3ガスのうちの少なくとも一種を1000[sccm]流量で10分間流出しながら行う請求項5又は請求項6に記載の基板処理方法。
- 前記プラズマ処理は、N2、N2O、NH3ガスのうちの少なくとも一種をプラズマ化して行う請求項4に記載の基板処理方法。
- 前記プラズマ処理は、300[℃]以上の温度条件下で行う請求項8に記載の基板処理方法。
- 前記相変化膜は、ゲルマニウム(Ge)、アンチモン(Sb)及びテルル(Te)のうちの少なくとも一種を含む化合物である請求項1に記載の基板処理方法。
- 前記相変化膜は、GaSb、InSb、InSe、Sb2Te3、GeTeのうちのいずれか一種の2元素化合物と、GeSbTe、GaSbTe、InSbTe、SnSb2Te4、InSbTeのうちのいずれか一種の3元素化合物及びAgInSbTe、(GeSn)SbTe、GeSb(SeTe)、Te81Ge15Sb2S2のうちのいずれか一種の4元素化合物のうちの少なくとも一種から構成される化合物である請求項10に記載の基板処理方法。
- 前記下部電極及び前記上部電極は、窒素(N)を含む化合物である請求項1又は請求項10に記載の基板処理方法。
- 相変化メモリを製造する基板処理装置において、
複数の基板が搬入及び搬出され、大気状態と真空状態との間で切り換えられるロードロックチャンバと、
内部が真空状態に保たれて多角面状を呈し、複数の面のうちの一つの面に前記ロードロックチャンバが取り付けられ、基板を搬送するための基板搬送ロボットを有する真空搬送チャンバと、
前記真空搬送チャンバの複数の面のうちの一つの面に取り付けられ、表面処理された下部電極が形成された基板の表面を窒化処理し、窒化処理された面に相変化膜を蒸着し、このような窒化処理及び蒸着が同じチャンバにおいて連続した工程により行われるプラズマプロセスチャンバと、
を備える基板処理装置。 - 相変化メモリを製造する基板処理装置において、
複数の基板が搬入及び搬出され、大気状態と真空状態との間で切り換えられるロードロックチャンバと、
内部が真空状態に保たれて多角面状を呈し、複数の面のうちの一つの面に前記ロードロックチャンバが取り付けられ、基板を搬送するための基板搬送ロボットを有する真空搬送チャンバと、
前記真空搬送チャンバの複数の面のうちの一つの面に取り付けられ、下部電極が形成された基板の表面の窒化処理を施す窒化処理チャンバと、
前記真空搬送チャンバの複数の面のうちの一つの面に取り付けられ、前記窒化処理チャンバにより窒化処理された基板の面に相変化膜を蒸着するプロセスチャンバと、
を備える基板処理装置。 - 前記窒化処理チャンバは、N2、N2O、NH3ガスのうちの少なくとも一種をプラズマとして窒化処理を施すプラズマチャンバであるか、あるいは、N2、N2O、NH3ガスのうちの少なくとも一種を流出しながらチャンバの内部温度を特定の温度以上に保ちながら窒化処理を施す熱処理チャンバである請求項14に記載の基板処理装置。
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Also Published As
Publication number | Publication date |
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CN103918070A (zh) | 2014-07-09 |
KR20130047230A (ko) | 2013-05-08 |
KR101907972B1 (ko) | 2018-10-17 |
US20150037929A1 (en) | 2015-02-05 |
CN103918070B (zh) | 2017-02-22 |
JP5933739B2 (ja) | 2016-06-15 |
WO2013066015A1 (ko) | 2013-05-10 |
US9793476B2 (en) | 2017-10-17 |
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