JP2021525961A - 緩衝材にわたって形成される光電子デバイス - Google Patents
緩衝材にわたって形成される光電子デバイス Download PDFInfo
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- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
本開示は、その開示が参照することによってその全体として本明細書に組み込まれる、2018年5月29日に出願された米国仮特許出願第62/677,563号の利益を主張する。
例えば、本願は以下の項目を提供する。
(項目1)
層状構造であって、
基板と、
上記基板にわたって形成される緩衝層と、
上記緩衝層にわたって形成される光電子デバイスと
を備え、
上記光電子デバイスは、変成エピタキシ形成されたSbベースの光電子デバイスであり、
上記緩衝層は、上記基板と上記光電子デバイスとの間で格子定数の遷移を提供する、層状構造。
(項目2)
上記緩衝層は、上記基板の直上にエピタキシャルに形成された緩衝層である、項目1に記載の層状構造。
(項目3)
上記緩衝層は、1つを上回る層を備える、項目1に記載の層状構造。
(項目4)
上記1つを上回る層はそれぞれ、エピタキシャルに成長された層である、項目3に記載の層状構造。
(項目5)
上記緩衝層は、
上記基板にわたって形成されるGeベースの層であって、上記基板は、シリコンベースの基板を備える、Geベースの層と、
上記Geベースの層にわたって形成されるIII−As層と、
上記III−As層にわたって変成エピタキシ形成されるIII−Sb層と
を備える、項目3に記載の層状構造。
(項目6)
上記緩衝層は、
上記基板の直上に形成される上記Geベースの層であって、上記基板は、シリコンベースの基板を備える、上記Geベースの層と、
上記Geベースの層の直上に形成される上記III−As層と、
上記III−As層の直上に形成される上記III−Sb層と
を備える、項目5に記載の層状構造。
(項目7)
上記基板は、結晶学的配向を有するシリコンウエハを備える、項目1に記載の層状構造。
(項目8)
上記結晶学的配向は、<111>配向に向かってミスカットされる(100)表面である、項目7に記載の層状構造。
(項目9)
上記基板は、相補型金属酸化膜半導体(CMOS)互換性回路を備え、上記光電子デバイスは、上記CMOS互換性回路に電気的に結合される赤外線光検出器を備える、項目1に記載の層状構造。
(項目10)
上記光電子デバイスは、V群元素と、III群元素とを含む合金を含む、項目1に記載の層状構造。
(項目11)
上記光電子デバイスは、InAs z Sb 1−z 、AlAs z Sb 1−z 、およびGaAs z Sb 1−z から成る群の材料を含み、zは、0〜1の範囲内である、項目1に記載の層状構造。
(項目12)
上記光電子デバイスは、In x Al y Ga 1−x−y As z Sb 1−z から成る群の材料を含み、x、y、x+y、およびzは、0〜1の範囲内である、項目1に記載の層状構造。
(項目13)
上記光電子デバイスは、赤外線光検出器を備え、上記緩衝層は、上記基板と上記赤外線光検出器のSbベースの吸収体層との間で上記格子定数の遷移を提供する、項目1に記載の層状構造。
(項目14)
層状構造を作製するための方法であって、上記方法は、
基板にわたって緩衝層を形成することと、
変成エピタキシによって、上記緩衝層にわたって光電子デバイスを形成することと
を含み、
上記光電子デバイスは、Sbベースの光電子デバイスであり、
上記緩衝層は、上記基板と上記光電子デバイスとの間で格子定数の遷移を提供する、方法。
(項目15)
上記緩衝層を形成することは、
上記基板にわたってGeベースの層を形成することであって、上記基板は、シリコンベースの基板を備える、ことと、
上記Geベースの層にわたってIII−As層を形成することと、
上記III−As層にわたってIII−Sb層を形成することと
を含む、項目14に記載の方法。
(項目16)
上記Geベースの層を形成することは、化学蒸着(CVD)を使用することを含む、項目15に記載の方法。
(項目17)
上記III−As層を形成することは、分子ビームエピタキシ(MBE)を使用することを含む、項目15に記載の方法。
(項目18)
上記III−Sb層を形成することは、MBEを使用することを含む、項目15に記載の方法。
(項目19)
上記光電子デバイスを形成することは、MBEを使用することを含む、項目15に記載の方法。
(項目20)
上記基板にわたって上記Geベースの層を形成することは、第1の反応プロセスにおいてGe−Si基板を形成することを含み、上記Geベースの層にわたってIII−As層を形成することは、第2の反応プロセスにおいて上記Ge−Si基板にわたって上記III−As層を形成することを含む、項目15に記載の方法。
Claims (20)
- 層状構造であって、
基板と、
前記基板にわたって形成される緩衝層と、
前記緩衝層にわたって形成される光電子デバイスと
を備え、
前記光電子デバイスは、変成エピタキシ形成されたSbベースの光電子デバイスであり、
前記緩衝層は、前記基板と前記光電子デバイスとの間で格子定数の遷移を提供する、層状構造。 - 前記緩衝層は、前記基板の直上にエピタキシャルに形成された緩衝層である、請求項1に記載の層状構造。
- 前記緩衝層は、1つを上回る層を備える、請求項1に記載の層状構造。
- 前記1つを上回る層はそれぞれ、エピタキシャルに成長された層である、請求項3に記載の層状構造。
- 前記緩衝層は、
前記基板にわたって形成されるGeベースの層であって、前記基板は、シリコンベースの基板を備える、Geベースの層と、
前記Geベースの層にわたって形成されるIII−As層と、
前記III−As層にわたって変成エピタキシ形成されるIII−Sb層と
を備える、請求項3に記載の層状構造。 - 前記緩衝層は、
前記基板の直上に形成される前記Geベースの層であって、前記基板は、シリコンベースの基板を備える、前記Geベースの層と、
前記Geベースの層の直上に形成される前記III−As層と、
前記III−As層の直上に形成される前記III−Sb層と
を備える、請求項5に記載の層状構造。 - 前記基板は、結晶学的配向を有するシリコンウエハを備える、請求項1に記載の層状構造。
- 前記結晶学的配向は、<111>配向に向かってミスカットされる(100)表面である、請求項7に記載の層状構造。
- 前記基板は、相補型金属酸化膜半導体(CMOS)互換性回路を備え、前記光電子デバイスは、前記CMOS互換性回路に電気的に結合される赤外線光検出器を備える、請求項1に記載の層状構造。
- 前記光電子デバイスは、V群元素と、III群元素とを含む合金を含む、請求項1に記載の層状構造。
- 前記光電子デバイスは、InAszSb1−z、AlAszSb1−z、およびGaAszSb1−zから成る群の材料を含み、zは、0〜1の範囲内である、請求項1に記載の層状構造。
- 前記光電子デバイスは、InxAlyGa1−x−yAszSb1−zから成る群の材料を含み、x、y、x+y、およびzは、0〜1の範囲内である、請求項1に記載の層状構造。
- 前記光電子デバイスは、赤外線光検出器を備え、前記緩衝層は、前記基板と前記赤外線光検出器のSbベースの吸収体層との間で前記格子定数の遷移を提供する、請求項1に記載の層状構造。
- 層状構造を作製するための方法であって、前記方法は、
基板にわたって緩衝層を形成することと、
変成エピタキシによって、前記緩衝層にわたって光電子デバイスを形成することと
を含み、
前記光電子デバイスは、Sbベースの光電子デバイスであり、
前記緩衝層は、前記基板と前記光電子デバイスとの間で格子定数の遷移を提供する、方法。 - 前記緩衝層を形成することは、
前記基板にわたってGeベースの層を形成することであって、前記基板は、シリコンベースの基板を備える、ことと、
前記Geベースの層にわたってIII−As層を形成することと、
前記III−As層にわたってIII−Sb層を形成することと
を含む、請求項14に記載の方法。 - 前記Geベースの層を形成することは、化学蒸着(CVD)を使用することを含む、請求項15に記載の方法。
- 前記III−As層を形成することは、分子ビームエピタキシ(MBE)を使用することを含む、請求項15に記載の方法。
- 前記III−Sb層を形成することは、MBEを使用することを含む、請求項15に記載の方法。
- 前記光電子デバイスを形成することは、MBEを使用することを含む、請求項15に記載の方法。
- 前記基板にわたって前記Geベースの層を形成することは、第1の反応プロセスにおいてGe−Si基板を形成することを含み、前記Geベースの層にわたってIII−As層を形成することは、第2の反応プロセスにおいて前記Ge−Si基板にわたって前記III−As層を形成することを含む、請求項15に記載の方法。
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