JP5191650B2 - 窒化物半導体発光素子および窒化物半導体発光素子の製造方法 - Google Patents
窒化物半導体発光素子および窒化物半導体発光素子の製造方法 Download PDFInfo
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- H01S5/30—Structure or shape of the active region; Materials used for the active region
- H01S5/34—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers
- H01S5/343—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser
- H01S5/34333—Structure or shape of the active region; Materials used for the active region comprising quantum well or superlattice structures, e.g. single quantum well [SQW] lasers, multiple quantum well [MQW] lasers or graded index separate confinement heterostructure [GRINSCH] lasers in AIIIBV compounds, e.g. AlGaAs-laser, InP-based laser with a well layer based on Ga(In)N or Ga(In)P, e.g. blue laser
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- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/2036—Broad area lasers
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- H01S5/00—Semiconductor lasers
- H01S5/20—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers
- H01S5/22—Structure or shape of the semiconductor body to guide the optical wave ; Confining structures perpendicular to the optical axis, e.g. index or gain guiding, stripe geometry, broad area lasers, gain tailoring, transverse or lateral reflectors, special cladding structures, MQW barrier reflection layers having a ridge or stripe structure
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Description
アルミニウムからなるターゲットが設置してある反応性スパッタリング装置の成膜室内に酸素ガスを導入し、マイクロ波を印加して、アルミニウムからなるターゲットを酸素プラズマに曝すことにより、アルミニウムからなるターゲットの表面から数nm程度酸化させ、酸化アルミニウムからなるターゲットを形成する。
その後、成膜室内に窒素ガスとアルゴンガスとを導入し、マイクロ波を印加してプラズマ状態にして、酸化アルミニウムからなるターゲットをスパッタリングすることにより、アルミニウムの酸窒化物を形成することが可能となる。
図1に、本実施の形態の窒化物半導体レーザ素子の好ましい一例の模式的な断面図を示す。ここで、本実施の形態の窒化物半導体レーザ素子100は、n型GaN基板101上に、n型AlGaInNバッファ層102、n型AlGaInNクラッド層103、n型AlGaInNガイド層104、AlGaInN多重量子井戸活性層105、p型AlGaInNガイド層106、p型AlGaInNクラッド層107およびp型AlGaInNコンタクト層108がn型GaN基板101側からこの順序で積層された構成を有している。なお、上記の各層の混晶比は適宜調節されるものであり、本発明の本質とは関係がない。また、本実施の形態の窒化物半導体レーザ素子から発振されるレーザ光の波長はAlGaInN多重量子井戸活性層105の混晶比によって、たとえば370nm〜470nmの範囲で適宜調節することができる。本実施の形態においては、405nmの波長のレーザ光が発振するように調節された。
本実施の形態の窒化物半導体レーザ素子は、光出射側の共振器端面に形成されるコート膜の構成および光反射側の共振器端面に形成される膜の構成を変更したこと以外は、実施の形態1の窒化物半導体レーザ素子と同様の構成を有している。
本実施の形態の窒化物半導体レーザ素子は、光出射側の共振器端面に形成されるコート膜の構成および光反射側の共振器端面に形成される膜の構成を変更したこと以外は、実施の形態1の窒化物半導体レーザ素子と同様の構成を有している。
本実施の形態の窒化物半導体レーザ素子は、光出射側の共振器端面に形成されるコート膜の構成および光反射側の共振器端面に形成される膜の構成を変更したこと以外は、実施の形態1の窒化物半導体レーザ素子と同様の構成を有している。
本実施の形態の窒化物半導体レーザ素子は、460nmの波長のレーザ光が発振するように調節されたこと、ならびに光出射側の共振器端面に形成されるコート膜の構成および光反射側の共振器端面に形成される膜の構成を変更したこと以外は、実施の形態1の窒化物半導体レーザ素子と同様の構成を有している。なお、発振されるレーザ光の波長は、AlGaInN多重量子井戸活性層のAlGaInNの混晶比を変更することで調節している。
本実施の形態の窒化物半導体レーザ素子は、光出射側の共振器端面に形成されるコート膜の構成および光反射側の共振器端面に形成される膜の構成を変更したこと以外は、実施の形態1の窒化物半導体レーザ素子と同様の構成を有している。
本実施の形態の窒化物半導体レーザ素子は、光出射側の共振器端面に形成されるコート膜の構成および光反射側の共振器端面に形成される膜の構成を変更したこと以外は、実施の形態1の窒化物半導体レーザ素子と同様の構成を有している。
Claims (10)
- 光出射部に接して第1の膜が形成されている窒化物半導体発光素子であって、
前記光出射部は窒化物半導体からなり、
前記第1の膜はアルミニウムの酸窒化物からなり、
前記第1の膜上に第2の膜が形成され、
前記第2の膜は、アルミニウムの酸窒化物であって、かつ、前記第1の膜とは、アルミニウムの含有量は略等しく、前記第1の膜の酸素の含有量が前記第2の膜の酸素の含有量よりも小さい、窒化物半導体発光素子。 - 前記窒化物半導体発光素子は窒化物半導体レーザ素子であり、
該窒化物半導体レーザ素子の共振器の反射側端面に接してアルミニウムの酸窒化物からなる膜が形成されていることを特徴とする、請求項1に記載の窒化物半導体発光素子。 - 前記第1の膜の酸素の含有量が2原子%以上35原子%以下であることを特徴とする、請求項1または2に記載の窒化物半導体発光素子。
- 前記第1の膜の酸素の含有量が2原子%以上15原子%以下であることを特徴とする、請求項1または2に記載の窒化物半導体発光素子。
- 前記第2の膜上に酸化物または酸窒化物からなる第3の膜が形成されており、前記第3の膜は、酸化アルミニウム、酸化シリコン、またはシリコンの酸窒化物であることを特徴とする、請求項1から4のいずれかに記載の窒化物半導体発光素子。
- 請求項1から5のいずれかに記載の窒化物半導体発光素子を製造する方法であって、前記光出射部に前記第1の膜をスパッタ法または電子ビーム蒸着法により形成することを特徴とする、窒化物半導体発光素子の製造方法。
- 請求項1から5のいずれかに記載の窒化物半導体発光素子を製造する方法であって、前記光出射部に前記第1の膜をCVD法により形成することを特徴とする、窒化物半導体発光素子の製造方法。
- 前記第1の膜は、ターゲットにアルミニウムを用い、成膜室内に少なくとも窒素ガスと酸素ガスとを導入することによって形成されることを特徴とする、請求項6に記載の窒化物半導体発光素子の製造方法。
- 前記第1の膜は、ターゲットに酸窒化アルミニウムおよび酸化アルミニウムの少なくとも一方を用い、成膜室内に酸素ガスを導入せずに形成されることを特徴とする、請求項6に記載の窒化物半導体発光素子の製造方法。
- 前記第1の膜は、成膜室内の少なくとも一部を酸化して前記成膜室内に酸素ガスを導入せずに形成されることを特徴とする、請求項6に記載の窒化物半導体発光素子の製造方法。
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JP2006320327A JP5191650B2 (ja) | 2005-12-16 | 2006-11-28 | 窒化物半導体発光素子および窒化物半導体発光素子の製造方法 |
KR1020060122938A KR100829137B1 (ko) | 2005-12-16 | 2006-12-06 | 질화물반도체 발광 소자 및 질화물반도체 레이저 소자의제조 방법 |
US11/638,582 US8368095B2 (en) | 2005-12-16 | 2006-12-14 | Nitride semiconductor light emitting device and method of fabricating nitride semiconductor laser device |
CN2006101717110A CN1983748B (zh) | 2005-12-16 | 2006-12-15 | 氮化物半导体发光元件及氮化物半导体激光元件的制造方法 |
CN2010105102836A CN102005699A (zh) | 2005-12-16 | 2006-12-15 | 氮化物半导体发光元件及氮化物半导体激光元件的制造方法 |
CN2011101196059A CN102231477A (zh) | 2005-12-16 | 2006-12-15 | 氮化物半导体发光元件及氮化物半导体激光元件的制造方法 |
KR1020080007919A KR100868268B1 (ko) | 2005-12-16 | 2008-01-25 | 질화물반도체 발광 소자 및 질화물반도체 레이저 소자의제조 방법 |
US12/153,756 US8735192B2 (en) | 2005-12-16 | 2008-05-23 | Nitride semiconductor light emitting device and method of fabricating nitride semiconductor laser device |
KR1020080050232A KR100898958B1 (ko) | 2005-12-16 | 2008-05-29 | 질화물반도체 발광 소자 및 질화물반도체 레이저 소자의제조 방법 |
KR1020080108970A KR100924498B1 (ko) | 2005-12-16 | 2008-11-04 | 질화물반도체 발광 소자 및 질화물반도체 레이저 소자의 제조 방법 |
KR1020080108978A KR100924500B1 (ko) | 2005-12-16 | 2008-11-04 | 질화물반도체 발광 소자 및 질화물반도체 레이저 소자의 제조 방법 |
US12/382,530 US20090218593A1 (en) | 2005-12-16 | 2009-03-18 | Nitride semiconductor light emitting device and method of frabicating nitride semiconductor laser device |
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- 2006-12-15 CN CN2006101717110A patent/CN1983748B/zh active Active
- 2006-12-15 CN CN2011101196059A patent/CN102231477A/zh active Pending
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2008
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- 2008-05-29 KR KR1020080050232A patent/KR100898958B1/ko active IP Right Grant
- 2008-11-04 KR KR1020080108970A patent/KR100924498B1/ko active IP Right Grant
- 2008-11-04 KR KR1020080108978A patent/KR100924500B1/ko active IP Right Grant
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CN1983748A (zh) | 2007-06-20 |
KR100868268B1 (ko) | 2008-11-11 |
KR100829137B1 (ko) | 2008-05-14 |
CN102005699A (zh) | 2011-04-06 |
US20070138492A1 (en) | 2007-06-21 |
US8368095B2 (en) | 2013-02-05 |
KR100924498B1 (ko) | 2009-11-03 |
CN1983748B (zh) | 2011-06-22 |
US8735192B2 (en) | 2014-05-27 |
KR20080103943A (ko) | 2008-11-28 |
KR20080103942A (ko) | 2008-11-28 |
KR100924500B1 (ko) | 2009-11-02 |
KR20080016908A (ko) | 2008-02-22 |
US20090218593A1 (en) | 2009-09-03 |
US20080291961A1 (en) | 2008-11-27 |
JP2007189201A (ja) | 2007-07-26 |
KR20070064387A (ko) | 2007-06-20 |
KR100898958B1 (ko) | 2009-05-25 |
KR20080066640A (ko) | 2008-07-16 |
CN102231477A (zh) | 2011-11-02 |
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