JP6667517B2 - シード構造からカーボン構造を分離する方法 - Google Patents
シード構造からカーボン構造を分離する方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 116
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 80
- 239000007789 gas Substances 0.000 claims description 105
- 238000005530 etching Methods 0.000 claims description 89
- 230000008569 process Effects 0.000 claims description 74
- 239000000758 substrate Substances 0.000 claims description 46
- 238000002310 reflectometry Methods 0.000 claims description 19
- 229910021389 graphene Inorganic materials 0.000 claims description 18
- 239000007795 chemical reaction product Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002070 nanowire Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000151 deposition Methods 0.000 claims description 9
- 239000002041 carbon nanotube Substances 0.000 claims description 8
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 8
- 239000012159 carrier gas Substances 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 150000002367 halogens Chemical class 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 229910052732 germanium Inorganic materials 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000009834 vaporization Methods 0.000 claims description 2
- 230000008016 vaporization Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 27
- 239000010949 copper Substances 0.000 description 9
- 239000002071 nanotube Substances 0.000 description 8
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005137 deposition process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
- 239000002134 carbon nanofiber Substances 0.000 description 2
- 239000002717 carbon nanostructure Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- BMNDJWSIKZECMH-UHFFFAOYSA-N nitrosyl bromide Chemical compound BrN=O BMNDJWSIKZECMH-UHFFFAOYSA-N 0.000 description 2
- VPCDQGACGWYTMC-UHFFFAOYSA-N nitrosyl chloride Chemical compound ClN=O VPCDQGACGWYTMC-UHFFFAOYSA-N 0.000 description 2
- 235000019392 nitrosyl chloride Nutrition 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000007036 catalytic synthesis reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 nitrosyl group Chemical group 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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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
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Description
CVD反応炉のプロセスチャンバーの中でシード構造の上に堆積されたカーボン構造を与えるステップと、
シード構造とカーボン構造とを含む基板をプロセス温度に加熱するステップと、
分子式AOmXn,AOmXnYpまたはAmXnを持つ少なくとも1つのエッチングガスを注入するステップと、
を備え、
Aが、S,C,Nを含む属の元素から選択され、
Oが、酸素であり、
X,Yが、異なるハロゲンであり、
m,n,pが、0より大きな自然数であり、
エッチングガスでの化学反応を通してシード構造をガス状の反応生成物に変換するステップと、
キャリアガスの流れによってプロセスチャンバーからガス状の反応生成物を除くステップと、
を備える。
CVD反応炉4のプロセスチャンバー7の中でシード構造2の上に堆積されたカーボン構造1を与えるステップと、
シード構造2とカーボン構造1とを含む基板をプロセス温度に加熱するステップと、
分子式AOmXn,AOmXnYpまたはAmXnを持つ少なくとも1つのエッチングガスを注入するステップと、
を備え、
Aが、S,C,Nを含む属の元素から選択され、
Oが、酸素であり、
X,Yが、異なるハロゲンであり、
m,n,pが、0より大きな自然数であり、
エッチングガスでの化学反応を通してシード構造2をガス状の反応生成物に変換するステップと、
キャリアガスの流れによってプロセスチャンバー7からガス状の反応生成物を除くステップと、
を備えることを特徴とする方法。
エッチングガスの活性化がCVD反応炉4の中で、特にCVD反応炉4内のガス注入ボディ8の中で、またはプロセスチャンバー7の中で加熱によって起こることが提供される、
ことを特徴とする方法。
Rが水素または金属であり、Xがハロゲンである、
ことを特徴とする方法。
表面2’で反射される入射光のビーム19を生成する光源18と、反射光のビーム20の強度を測定する検出器21とが、特に反射率を決定するために使用され、
入射光のビーム19が表面2’の表面延長に対して垂直にまたは斜めに向けられ、および/または入射光のビーム19が連続的にまたはパルス状に生成される、
ことを特徴とする方法。
光源18がカーボン構造1とシード構造2の間の境界層で反射される入射光のビームを生成し、検出器21が境界層で反射された反射光のビーム20の強度を決定する、
ことを特徴とする装置。
制御装置が検出器21と共に動作し、検出器21によって決定される反射光のビーム20の強度が最小を経た後で更に増加しないときにプロセスチャンバー7の中へのエッチングガスの投入を停止する、
ことを特徴とする装置。
2…シード構造
2’…シード構造2の表面
3…基板
3’…基板の表面3’
4…CVD反応炉
5…サセプタ
6…ヒーター
7…プロセスチャンバー
8…ガス注入ボディ
9…ガス出口穴
10…供給ライン
11…エッチングガス源
12…供給ライン
13…供給ライン
14…外部活性化器
15…ポンプ
16…ガス排気管
18…光源
19…入射光のビーム
20…反射光のビーム
21…検出器
R…反射率
t0…時刻
t1…時刻
t2…時刻
Claims (15)
- シード構造(2)の上に堆積したカーボン構造(1)、例えばグラフェン、カーボン・ナノチューブまたは半導体ナノワイヤを前記シード構造(2)から分離する方法であって、
CVD反応炉(4)のプロセスチャンバー(7)の中で炭素を含むプロセスガスを供給することにより前記シード構造(2)の上または下に前記カーボン構造(1)を堆積させる堆積ステップと、
前記堆積ステップの後に直ちに、同じ前記プロセスチャンバー(7)内で行われる分離ステップと、を有し、前記分離ステップが、
前記シード構造(2)と前記カーボン構造(1)とを含む基板(3)をプロセス温度に加熱するステップと、
分子式AOmXn,AOmXnYpまたはAmXnを持つ少なくとも1つのエッチングガスを前記プロセスチャンバー(7)に注入するステップと、
を備え、
Aが、S,C,Nを含む族の元素から選択され、
Oが、酸素であり、
X,Yが、異なるハロゲンであり、
m,n,pが、0より大きな自然数であり、さらに、
プラズマまたは熱により活性化された前記エッチングガスでの化学反応を通して前記シード構造(2)をガス状の反応生成物に変換するステップと、
キャリアガスの流れによって前記プロセスチャンバー(7)からガス状の反応生成物を除くステップと、
を備えることを特徴とする方法。 - 前記シード構造(2)が、金属の構造であることを特徴とする請求項1に記載の方法。
- 前記シード構造(2)が、次の族の元素、Cu,Ni,Co,Fe,Ru,Ir,Ga,Gd,Mo,Mn,Ag,Au,B,Si,Geから選択された少なくとも1つの元素を含むことを特徴とする請求項1に記載の方法。
- 前記シード構造(2)が、前記基板(3)と前記カーボン構造(1)との間に、または前記カーボン構造(1)の上および前記基板(3)内に配置され、前記基板(3)の上に粒子、層によって形成され、または前記シード構造(2)が前記基板(3)自体によって形成されることを特徴とする請求項1ないし3のいずれか1項に記載の方法。
- 前記エッチングガスが、熱の供給によって、紫外線によって、またはプラズマによって活性化され、
前記エッチングガスの活性化が、前記CVD反応炉(4)内の、ガス注入ボディ(8)の中または前記プロセスチャンバー(7)の中で加熱によって起こることが提供される、
ことを特徴とする請求項1ないし4のいずれか1項に記載の方法。 - 前記エッチングガスが、SOCl2であることを特徴とする請求項1ないし5のいずれか1項に記載の方法。
- 前記エッチングガスが、お互いに異なる複数のガスで構成されるガス混合物であることを特徴とする請求項1ないし6のいずれか1項に記載の方法。
- 前記エッチングガスが、液体が気化されるエッチングガス源(11)で提供されることを特徴とする請求項1ないし7のいずれか1項に記載の方法。
- 分子式RXを持った追加のガスが、前記エッチングガスと共に前記プロセスチャンバー(7)の中に注入され、
Rが水素または金属であり、Xがハロゲンである、
ことを特徴とする請求項1ないし8のいずれか1項に記載の方法。 - ガス状の反応生成物への前記シード構造(2)の転換の進行が、前記シード構造(2)の表面(2’)の反射率を決定することによって決定され、
前記シード構造(2)の表面(2’)で反射される入射光のビーム(19)を生成する光源(18)と、反射光のビーム(20)の強度を測定する検出器(21)とが、反射率を決定するために使用され、
前記入射光のビーム(19)が前記表面(2’)の表面延長に対して垂直にまたは斜めに向けられ、および/または前記入射光のビーム(19)が連続的にまたはパルス状に生成される、
ことを特徴とする請求項1ないし9のいずれか1項に記載の方法。 - 前記検出器(21)によって決定される前記反射光のビーム(20)の強度が最小を経た後で最大に達したときに、前記プロセスチャンバー(7)の中へのエッチグガスの導入が終了することを特徴とする請求項10に記載の方法。
- 前記シード構造(2)から前記カーボン構造(1)を分離することに先立って、同一の前記プロセスチャンバー(7)の中で前記カーボン構造(1)が前記シード構造(2)の上に堆積することを特徴とする請求項1ないし11のいずれか1項に記載の方法。
- 請求項1ないし12のいずれか1項に記載の方法を実行するための装置であって、
エッチングガスの提供源を備え、当該提供源が容器(11)を持ち、当該容器(11)の中に液体が蓄えられており、当該容器(11)から前記エッチングガスが気化によって生成されることができることを特徴とする装置。 - 光源(18)と検出器(21)を備え、
前記光源(18)がカーボン構造(1)とシード構造(2)の間の境界層で反射される入射光のビーム(19)を生成し、前記検出器(21)が前記境界層で反射された反射光のビーム(20)の強度を決定する、
ことを特徴とする請求項13に記載の装置。 - 制御装置を備え、
前記制御装置が前記検出器(21)と共に動作し、前記検出器(21)によって決定される反射光のビーム(20)の強度が最小を経た後で更に増加しないときにプロセスチャンバー(7)の中への前記エッチングガスの投入を停止する、
ことを特徴とする請求項14に記載の装置。
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