JP7447432B2 - 基板を処理する装置、原料カートリッジ、基板を処理する方法、及び原料カートリッジを製造する方法 - Google Patents
基板を処理する装置、原料カートリッジ、基板を処理する方法、及び原料カートリッジを製造する方法 Download PDFInfo
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- JP7447432B2 JP7447432B2 JP2019200872A JP2019200872A JP7447432B2 JP 7447432 B2 JP7447432 B2 JP 7447432B2 JP 2019200872 A JP2019200872 A JP 2019200872A JP 2019200872 A JP2019200872 A JP 2019200872A JP 7447432 B2 JP7447432 B2 JP 7447432B2
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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
前記基板が収容されたチャンバと、
処理ガス供給流路を介して前記チャンバに接続され、前記基板を処理するための処理ガスを供給するように構成された処理ガス供給部と、を有し、
前記処理ガス供給部は、
前記処理ガスの原料のガス分子を吸着させた金属有機構造体を含む多孔質部材を収容した原料タンクを備える原料カートリッジと、
前記原料カートリッジが装着及び取り外し可能に構成され、前記原料カートリッジを装着したときに、前記原料タンクと前記処理ガス供給流路とを連通させるように構成された本体部と、
前記原料カートリッジが前記本体部に装着された状態にて、前記金属有機構造体に吸着された前記処理ガスの原料のガス分子を脱離させ、前記処理ガスとして処理ガス供給流路へ流出させる操作を実施するように構成された脱離機構と、を有し、
前記金属有機構造体は、下記(a)~(d)に記載の金属有機構造体群から選択されたものである。
(a)銅イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(b)鉄イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(c)クロムイオンとテレフタル酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(d)ランタンイオンと1,3,5-トリス(4-カルボキシフェニル)ベンゼンとの配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
図2(a)に示すように、本体部22は内部に原料カートリッジ21を収容可能な容器部221と、原料ガス流路6の上流端部に接続され、容器部221の上面側の開口を閉じる蓋部222とを備える。
多孔質部材211に含まれる金属有機構造体は、多孔性配位高分子(Porous Coordination Polymer、PCP)とも呼ばれる。金属有機構造体は、金属イオンと有機配位子(有機化合物)との配位結合によって構成される金属錯体を含み、この金属錯体の複数が集積して形成された細孔構造を有するものである。
本例においては、原料であるAlCl3の分子が吸着されるように、AlCl3の分子の大きさに合わせて多孔質部材211をなす金属有機構造体の細孔531が設計されている。
(a)銅イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(b)鉄イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(c)クロムイオンとテレフタル酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(d)ランタンイオンと1,3,5-トリス(4-カルボキシフェニル)ベンゼンとの配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
なお以下の説明では、多孔質部材211とこれを構成する金属有機構造体とを区別せずに「多孔質部材211の細孔」、「多孔質部材211への吸着」などと記載する場合がある。
なお、膜の原料が常温常圧で液体の物質である場合は、原料ガス源51には、液体である原料にキャリアガスをバブリングして、原料を気化するバブリング機構を設けてもよい。さらに、原料を気化させる機構は、液体である原料をインジェクタから噴射して直接気化させる機構であってもよい。
またここで、金属有機構造体に吸着させる原料は、常温常圧にて気体であってもよく、例えば金属有機構造体に優先的に吸着させることにより、低濃度の原料ガスを濃縮してもよい。この場合には、濃縮が必要な低濃度の原料ガスが「原料ガスの原料」に相当し、原料ガス源51に加熱機構を設ける必要はない。
また、成膜装置1のユーザーなどが、成膜装置1が設置されている工場にて実施してもよい。例えば、原料カートリッジ21に貯蔵されている原料ガスを使い切った後、原料ガス供給部2の設置場所にて、当該原料カートリッジ21に原料ガスを再貯蔵する処理を行う場合についても、原料カートリッジ21の製造に含まれる。なお、この場合には、原料カートリッジ21は、原料ガス供給部2に対して固定され、装着、取り外し可能ではない構成となっていてもよい。
成膜装置1に設けられている原料ガス供給部2の設置エリアまで搬送された原料カートリッジ21は、本体部22に装着して使用される。本体部22への装着にあたっては、例えば原料タンク210の上面に設けられ、蓋部222と接続される短管部213からキャップ214を取り外した後、当該原料タンク210を容器部221内に収容する。
図1に示すバルブ601は、原料カートリッジ21を装着した後に原料タンク210と原料ガス流路6を連通させる。また原料ガス給断バルブ61は、原料ガスの給断操作を行うように構成され、本実施の形態の処理ガス給断バルブに相当する。
反応ガス供給部は、反応ガスをチャンバ10へ供給するように構成され、反応ガスの供給源641と、当該供給源641からチャンバ10へ反応ガスを供給する反応ガス供給路64と、を有するものである。反応ガスは、原料ガスと反応して、膜を形成するガスであり、例えばAlCl3との反応により窒化アルミニウム(AlN)を生成するアンモニア(NH3)ガスが用いられる。例えば反応ガス供給路64は、反応ガスの供給、停止を行うように構成された反応ガス給断バルブ642と、反応ガスの流量調節を実施する流量調節部643と、を備えている。
先ず膜の形成前の準備として、原料タンク210内の多孔質部材211がAlCl3のガス分子を吸着した状態となっている原料カートリッジ21を、原料ガス供給部2の本体部22に装着する工程を実施する(図2(a))。当該工程は、例えばバルブ601を閉じた状態で行われる。原料カートリッジ21の装着が完了したらバルブ601を開く。
続いて、図6に示すように反応ガス給断バルブ642を開き、他のバルブを閉じて、反応ガスをチャンバ10に供給する。これにより、ウエハ表面に吸着された原料ガスと反応ガスとが反応して、AlNの1分子層が形成される。この後、パージガス給断バルブ652を開き、他のバルブを閉じて、パージガスをチャンバ10に供給し、チャンバ10内の反応ガスをパージガスにより置換する(図5)。
また図1~図6を用いて説明した例では、原料タンク210内で発生させた高濃度の原料ガスを、その自圧によりチャンバ10に供給する例を示したが、キャリアガスを利用して原料ガスの輸送を行う手法の採用を否定するものではない。ウエハWへの膜の形成を行う上で十分な濃度の原料が得られれば、原料タンク210にキャリアガスを供給して、内部の原料ガスとキャリアガスとの混合ガスをチャンバ10に供給してもよい。
(a)銅イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体(実施例1)
(b)鉄イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体(実施例2)
(c)クロムイオンとテレフタル酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体(実施例3)
(d)ランタンイオンと1,3,5-トリス(4-カルボキシフェニル)ベンゼンとの配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体(実施例4)
W ウエハ
1 成膜装置
21 原料カートリッジ
211 多孔質部材
220 脱離機構
22 本体部
Claims (17)
- 半導体装置を製造するための基板を処理する装置であって、
前記基板が収容されたチャンバと、
処理ガス供給流路を介して前記チャンバに接続され、前記基板を処理するための処理ガスを供給するように構成された処理ガス供給部と、を有し、
前記処理ガス供給部は、
前記処理ガスの原料のガス分子を吸着させた金属有機構造体を含む多孔質部材を収容した原料タンクを備える原料カートリッジと、
前記原料カートリッジが装着及び取り外し可能に構成され、前記原料カートリッジを装着したときに、前記原料タンクと前記処理ガス供給流路とを連通させるように構成された本体部と、
前記原料カートリッジが前記本体部に装着された状態にて、前記金属有機構造体に吸着された前記処理ガスの原料のガス分子を脱離させ、前記処理ガスとして処理ガス供給流路へ流出させる操作を実施するように構成された脱離機構と、を有し、
前記金属有機構造体は、下記(a)~(d)に記載の金属有機構造体群から選択されたものである、装置。
(a)銅イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(b)鉄イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(c)クロムイオンとテレフタル酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(d)ランタンイオンと1,3,5-トリス(4-カルボキシフェニル)ベンゼンとの配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体 - 前記処理ガスの原料は、常温常圧で液体または固体の物質である、請求項1に記載の装置。
- 前記脱離機構は、前記原料タンク内の前記多孔質部材を加熱して前記処理ガスの原料のガス分子を脱離させるように構成された多孔質部材加熱機構を含む、請求項1または2に記載の装置。
- 前記処理ガス供給流路は、前記処理ガスの流量調節を実施するように構成された流量調節部を備える、請求項1ないし3のいずれか一つに記載の装置。
- 前記処理は基板に膜を形成する処理であり、前記処理ガスの原料は、ハロゲン化金属である、請求項1ないし4のいずれか一つに記載の装置。
- 前記ハロゲン化金属は、塩化アルミニウム、五塩化タングステン及び四塩化チタンからなるハロゲン化金属群から選択されたものである、請求項5に記載の装置。
- 前記処理ガス供給流路に設けられ、前記チャンバへの処理ガスの供給、停止を行うように構成された処理ガス給断バルブと、
前記処理ガスと反応して前記膜を形成する反応ガスを供給するように構成されると共に、前記チャンバへの反応ガスの供給、停止を行うように構成された反応ガス給断バルブを備えた反応ガス供給部と、
制御部と、を有し、
前記制御部は、前記チャンバに対して前記処理ガスと反応ガスとが交互に供給されるように、前記処理ガス給断バルブ及び前記反応ガス給断バルブを制御するように構成される、請求項5または6に記載の装置。 - 半導体装置を製造するための基板を処理する装置に装着され、前記基板を処理するための処理ガスの供給に用いられる原料カートリッジであって、
前記処理ガスの原料のガス分子を吸着させた金属有機構造体を含む多孔質部材を収容した原料タンクを備え、
前記装置に装着された状態にて脱離操作を行うことにより、前記金属有機構造体に吸着された前記処理ガスの原料のガス分子を脱離させ、前記処理ガスを供給するように構成され、
前記金属有機構造体は、下記(a)~(d)に記載の金属有機構造体群から選択されたものである、原料カートリッジ。
(a)銅イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(b)鉄イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(c)クロムイオンとテレフタル酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(d)ランタンイオンと1,3,5-トリス(4-カルボキシフェニル)ベンゼンとの配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体 - 前記処理ガスの原料は、常温常圧で液体または固体の物質である、請求項8に記載の原料カートリッジ。
- 前記脱離操作は、前記原料タンク内の前記多孔質部材を加熱して前記処理ガスの原料のガス分子を脱離させる操作である、請求項8または9に記載の原料カートリッジ。
- 半導体装置を製造するための基板を処理する方法であって、
前記基板を処理するための処理ガスの原料のガス分子を吸着させた金属有機構造体を含む多孔質部材を収容した原料タンクを備える原料カートリッジを、処理ガス供給部の本体部に装着する工程と、
前記処理ガス供給部にて、前記金属有機構造体に吸着された前記処理ガスの原料のガス分子を脱離させる操作を行い、処理ガスを得る工程と、
前記基板が収容されたチャンバへ前記処理ガスを供給する工程と、を有し、
前記金属有機構造体は、下記(a)~(d)に記載の金属有機構造体群から選択されたものである、方法。
(a)銅イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(b)鉄イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(c)クロムイオンとテレフタル酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(d)ランタンイオンと1,3,5-トリス(4-カルボキシフェニル)ベンゼンとの配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体 - 前記処理ガスの原料は、常温常圧で液体または固体の物質である、請求項11に記載の方法。
- 前記処理ガスを得る工程では、前記原料タンク内の前記多孔質部材を加熱して前記処理ガスの原料のガス分子を脱離させる、請求項11または12に記載の方法。
- 前記処理は基板に膜を形成する処理であり、前記処理ガスの原料は、ハロゲン化金属である、請求項11ないし13のいずれか一つに記載の方法。
- 前記ハロゲン化金属は、塩化アルミニウム、五塩化タングステン及び四塩化チタンからなるハロゲン化金属群から選択されたものである、請求項14に記載の方法。
- 半導体装置を製造するための基板を処理する装置に装着され、前記基板を処理するための処理ガスの供給に用いられる原料カートリッジを製造する方法であって、
前記原料カートリッジを構成する原料タンク内に収容された多孔質部材に含まれる金属有機構造体に、前記処理ガスの原料のガス分子を供給して、前記ガス分子を吸着させる工程を有し、
前記金属有機構造体は、下記(a)~(d)に記載の金属有機構造体群から選択されたものである、製造方法。
(a)銅イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(b)鉄イオンと1,3,5-ベンゼントリカルボン酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(c)クロムイオンとテレフタル酸との配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体
(d)ランタンイオンと1,3,5-トリス(4-カルボキシフェニル)ベンゼンとの配位結合によって構成される金属錯体を含み、前記金属錯体の複数が集積して形成された細孔構造を有する金属有機構造体 - 前記処理ガスの原料は、常温常圧で液体または固体の物質である、請求項16に記載の製造方法。
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