JP2021510936A - Mocvdによりグラフェン被覆発光装置を製造する方法 - Google Patents
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Abstract
Description
MOCVDにより、MOCVD反応チャンバ内で感光または発光装置を形成するステップと、
上記MOCVD反応チャンバ内で上記感光または発光装置の上にグラフェン層構造体を形成するステップとを含み、
上記グラフェン層構造体は、2〜10のグラフェン層を含み、好ましくは2〜6のグラフェン層を含み、上記グラフェン層構造体は、上記装置の電気コンタクトを提供するためのものである。
反応チャンバ内の加熱されたサセプタの上に、上記感光または発光装置を基板として与えるステップを含み、上記チャンバは冷却された複数の入口を有し、複数の入口は、使用時に基板全体にわたって分散するように、かつ基板からの離隔距離が一定になるように配置されており、
上記入口を通して反応チャンバ内に前駆体化合物を含む流れを供給し、それにより、前駆体化合物を分解して基板上にグラフェンを形成するステップを含み、
上記入口は、100℃未満、好ましくは50〜60℃に冷却され、サセプタは、前駆体の分解温度を上回る、少なくとも50℃の温度まで加熱される。
密結合反応チャンバにおいて、グラフェンをその上に形成する第2基板表面と、前駆体が密結合反応チャンバに入る入口ポイントとの間の離隔距離を、十分に小さくすることにより、密結合反応チャンバ内で気相で反応する前駆体の割合を十分に低くすることでグラフェンを形成できるようにする。離隔距離の上限は、選択される前駆体、基板温度、および密結合反応チャンバ内の圧力に応じて変化する可能性がある。
1)前駆体の入口ポイントと第2基板表面との間の急峻な熱勾配、
2)前駆体の入口ポイントと第2基板表面との間の短い流路、および
3)前駆体の入口ポイントとグラフェン形成ポイントとを接近させること、
を可能にする。
反応チャンバ内の加熱されたサセプタの上に、感光または発光装置を基板として与えるステップを含み、チャンバは冷却された複数の入口を有し、複数の入口は、使用時に基板全体にわたって分散するように、かつ基板からの離隔距離が一定になるように配置されており、
上記入口を通して反応チャンバ内に前駆体化合物を含む流れを供給し、それにより、前駆体化合物を分解して基板上にグラフェンを形成するステップを含み、
上記入口は、100℃未満、好ましくは50〜60℃に冷却され、サセプタは、前駆体の分解温度を上回る、少なくとも50℃の温度まで加熱され、
それにより、感光または発光装置上にグラフェン層構造体を形成し、
グラフェン層構造体は、2〜6のグラフェン層を含み、グラフェン層構造体は、装置の電気コンタクトを提供するためのものである。好ましくは、感光または発光装置は、MOCVDによりMOCVD反応チャンバ内で予め形成され、好ましくは、MOCVDチャンバは、グラフェン層構造体の形成に使用されるものと同一であり、したがって、ステップとステップとの間でMOCVDチャンバから装置を取り出す必要がなく、この方法はより高速でより効率的である。
次に、本発明を、非限定的な以下の図面を参照しながらさらに説明する。
反応器の壁は、壁1Aの内側表面1Bを含む反応器の壁の内側表面に対して実質的に隣接して(典型的には数ミリメートルの距離で)延在する1つ以上の内部チャネルおよび/またはプレナム(plenum)8を画定する。動作中、水をポンプ9によりチャネル/プレナム8を通してポンピングすることにより、壁1Aの内側表面1Bを200℃以下に保つ。一部には入口3の直径が比較的狭いことから、(典型的には内側表面1Bの温度よりも遥かに低い温度で保存される)前駆体の温度は、壁1Aの入口3を通ってチャンバ1に入るときに、実質的に壁1Aの内側表面1Bの温度以下になる。
次に、本発明を、非限定的な以下の例を参照しながらさらに説明する。
反応器を、摂氏1100度まで加熱し、水素キャリアガスの存在下で100mbarの圧力までポンピングした。20000sccmの水素ガスを使用した。水素ガスの中でウェハをこの温度で5分間焼成した。
上記詳細な説明は、説明および例示のために提供され、添付の請求項の範囲を限定することを意図している訳ではない。本明細書に例示されている現在好ましい実施形態の多数の変形は、当業者には明らかであろう変形であり、なおも添付の請求項およびその均等物の範囲に含まれる。
Claims (7)
- 感光または発光電子装置の製造方法であって、前記方法は、
MOCVDにより、MOCVD反応チャンバ内で感光または発光装置を形成するステップと、
前記MOCVD反応チャンバ内で前記感光または発光装置の上にグラフェン層構造体を形成するステップとを含み、
前記グラフェン層構造体は、2〜10のグラフェン層を含み、好ましくは2〜6のグラフェン層を含み、前記グラフェン層構造体は、前記装置の電気コンタクトを提供するためのものである、方法。 - 前記発光装置はUV LEDであり、前記グラフェン層構造体は2〜6のグラフェン層を含む、請求項1に記載の方法。
- 前記感光装置はソーラーパネルである、請求項1に記載の方法。
- 前記グラフェン層構造体は、3〜4のグラフェン層を含む、先行する請求項のいずれか1項に記載の方法。
- 前記MOCVD反応チャンバ内で前記感光または発光装置の上にグラフェン層構造体を形成する前記ステップは、
反応チャンバ内の加熱されたサセプタの上に、前記感光または発光装置を基板として与えるステップを含み、前記チャンバは冷却された複数の入口を有し、前記複数の入口は、使用時に前記基板全体にわたって分散するように、かつ前記基板からの離隔距離が一定になるように配置されており、
前記入口を通して前記反応チャンバ内に前駆体化合物を含む流れを供給し、それにより、前記前駆体化合物を分解して前記基板上にグラフェンを形成するステップを含み、
前記入口は、100℃未満、好ましくは50〜60℃に冷却され、前記サセプタは、前記前駆体の分解温度を上回る、少なくとも50℃の温度まで加熱される、先行する請求項のいずれか1項に記載の方法。 - 前記前駆体化合物は、炭化水素であり、好ましくは室温で液体の炭化水素であり、最も好ましくはC5〜C10アルカンである、請求項5に記載の方法。
- 前記方法は、前記グラフェン層構造体で被覆された感光または発光装置を回路内に接続するステップをさらに含み、前記グラフェンの少なくとも一部が前記装置の電気コンタクトを提供する、先行する請求項のいずれか1項に記載の方法。
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