公开(公告)号：US08927962B2

公开(公告)日：2015-01-06

申请号：US13055690

申请日：2010-02-26

申请人： Masaki Ueno ,  Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Katsushi Akita ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

发明人： Masaki Ueno ,  Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Katsushi Akita ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

IPC分类号： H01L29/66 ,  H01L33/32 ,  H01S5/343 ,  B82Y20/00 ,  H01L33/16 ,  H01S5/32

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01L33/16 ,  H01L33/32 ,  H01L33/325 ,  H01S5/3202

摘要： A group III nitride semiconductor optical device 11a has a group III nitride semiconductor substrate 13 having a main surface 13a forming a finite angle with a reference plane Sc orthogonal to a reference axis Cx extending in a c-axis direction of the group III nitride semiconductor and an active layer 17 of a quantum-well structure, disposed on the main surface 13a of the group III nitride semiconductor substrate 13, including a well layer 28 made of a group III nitride semiconductor and a plurality of barrier layers 29 made of a group III nitride semiconductor. The main surface 13a exhibits semipolarity. The active layer 17 has an oxygen content of at least 1×1017 cm−3 but not exceeding 8×1017 cm−3. The plurality of barrier layers 29 contain an n-type impurity other than oxygen by at least 1×1017 cm−3 but not exceeding 1×1019 cm−3 in an upper near-interface area 29u in contact with a lower interface 28Sd of the well layer 28 on the group III nitride semiconductor substrate side.

摘要翻译： III族氮化物半导体光学元件11a具有III族氮化物半导体衬底13，该III族氮化物半导体衬底13具有与在III族氮化物半导体的c轴方向上延伸的参考轴Cx正交的参考平面Sc形成有限角度的主表面13a; 设置在III族氮化物半导体衬底13的主表面13a上的量子阱结构的有源层17，包括由III族氮化物半导体制成的阱层28和由III族组成的多个势垒层29 氮化物半导体。 主表面13a具有半极性。 活性层17的氧含量至少为1×1017cm-3，但不超过8×1017cm-3。 多个势垒层29在上接近界面区域29u中含有除氧之外的至少1×1017cm-3但不超过1×1019cm-3的n型杂质，该上接近界面区29u与下界面28Sd接触 III族氮化物半导体衬底侧的阱层28。

公开(公告)号：US08693515B2

公开(公告)日：2014-04-08

申请号：US13050330

申请日：2011-03-17

申请人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

发明人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

IPC分类号： H01S5/223

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01S5/0202 ,  H01S5/028 ,  H01S5/3202 ,  H01S2301/14

摘要： Provided is a group-III nitride semiconductor laser device with a laser cavity allowing for a low threshold current, on a semipolar surface of a support base in which the c-axis of a hexagonal group-III nitride is tilted toward the m-axis. First and second fractured faces 27, 29 to form the laser cavity intersect with an m-n plane. The group-III nitride semiconductor laser device 11 has a laser waveguide extending in a direction of an intersecting line between the m-n plane and the semipolar surface 17a. For this reason, it is feasible to make use of emission by a band transition enabling the low threshold current. In a laser structure 13, a first surface 13a is opposite to a second surface 13b. The first and second fractured faces 27, 29 extend from an edge 13c of the first surface 13a to an edge 13d of the second surface 13b. The fractured faces are not formed by dry etching and are different from conventionally-employed cleaved facets such as c-planes, m-planes, or a-planes.

摘要翻译： 提供了在六边形III族氮化物的c轴朝向m轴倾斜的支撑基座的半极性表面上具有允许低阈值电流的激光腔的III族氮化物半导体激光器件。 第一和第二断裂面27,29以形成与m-n平面相交的激光腔。 III族氮化物半导体激光器件11具有在m-n平面和半极性表面17a之间的交线的方向上延伸的激光波导。 因此，通过能够实现低阈值电流的带状转变来利用发射是可行的。 在激光结构13中，第一表面13a与第二表面13b相对。 第一和第二断裂面27,29从第一表面13a的边缘13c延伸到第二表面13b的边缘13d。 断裂面不是通过干蚀刻形成的，并且与常规使用的切割面不同，例如c面，m面或a平面。

公开(公告)号：US08653621B2

公开(公告)日：2014-02-18

申请号：US13054037

申请日：2010-06-18

申请人： Takashi Kyono ,  Yohei Enya ,  Yusuke Yoshizumi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

发明人： Takashi Kyono ,  Yohei Enya ,  Yusuke Yoshizumi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

IPC分类号： H01L31/102

摘要： A nitride-based semiconductor light-emitting element LE1 or LD1 has: a gallium nitride substrate 11 having a principal surface 11a which makes an angle α, in the range 40° to 50° or in the range more than 90° to 130°, with the reference plane Sc perpendicular to the reference axis Cx extending in the c axis direction; an n-type gallium nitride-based semiconductor layer 13; a second gallium nitride-based semiconductor layer 17; and a light-emitting layer 15 including a plurality of well layers of InGaN and a plurality of barrier layers 23 of a GaN-based semiconductor, wherein the direction of piezoelectric polarization of the plurality of well layers 21 is the direction from the n-type gallium nitride-based semiconductor layer 13 toward the second gallium nitride-based semiconductor layer 17.

公开(公告)号：US08306082B2

公开(公告)日：2012-11-06

申请号：US12846361

申请日：2010-07-29

申请人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

发明人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

IPC分类号： H01S5/00

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01L21/02389 ,  H01L21/02433 ,  H01S5/0014 ,  H01S5/0021 ,  H01S5/0202 ,  H01S5/2009 ,  H01S5/3202 ,  H01S5/3211

摘要： A group-III nitride semiconductor laser device comprises a laser structure including a support base and a semiconductor region, and an electrode provided on the semiconductor region of the laser structure. The support base comprises a hexagonal group-III nitride semiconductor and has a semipolar primary surface, and the semiconductor region is provided on the semipolar primary surface of the support base. The semiconductor region includes a first cladding layer of a first conductivity type gallium nitride-based semiconductor, a second cladding layer of a second conductivity type gallium nitride-based semiconductor, and an active layer. The first cladding layer, the second cladding layer, and the active layer are arranged along a normal axis to the semipolar primary surface. The active layer comprises a gallium nitride-based semiconductor layer. The c-axis of the hexagonal group-III nitride semiconductor of the support base tilts at a finite angle ALPHA with respect to a normal axis toward an a-axis of the hexagonal group-III nitride semiconductor. The laser structure includes first and second fractured faces intersecting with an a-n plane defined by the normal axis and the a-axis of the hexagonal group-III nitride semiconductor. The laser cavity of the group-III nitride semiconductor laser device includes the first and second fractured faces. The laser structure includes first and second surfaces and the first surface is opposite to the second surface, and each of the first and second fractured faces extends from an edge of the first surface to an edge of the second surface.

摘要翻译： III族氮化物半导体激光器件包括具有支撑基极和半导体区域的激光器结构以及设置在激光器结构的半导体区域上的电极。 支撑基底包括六方晶III族氮化物半导体，并且具有半极性主表面，并且半导体区域设置在支撑基底的半极性主表面上。 半导体区域包括第一导电型氮化镓基半导体的第一包覆层，第二导电型氮化镓基半导体的第二包覆层和有源层。 第一包层，第二包覆层和有源层沿着正交轴线配置到半极性主表面。 有源层包括氮化镓基半导体层。 支撑基座的六角形III族氮化物半导体的c轴相对于六边形III族氮化物半导体的a轴的法线轴线以有限角度ALPHA倾斜。 激光结构包括与由六角形III族氮化物半导体的法线轴和a轴限定的a-n平面相交的第一和第二断裂面。 III族氮化物半导体激光器件的激光腔包括第一和第二断裂面。 激光结构包括第一表面和第二表面，并且第一表面与第二表面相对，并且第一和第二断裂面中的每一个从第一表面的边缘延伸到第二表面的边缘。

公开(公告)号：US20120058583A1

公开(公告)日：2012-03-08

申请号：US13240368

申请日：2011-09-22

申请人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

发明人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

IPC分类号： H01L33/62

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01S5/0202 ,  H01S5/028 ,  H01S5/3202 ,  H01S2301/14

摘要： Provided is a group-III nitride semiconductor laser device with a laser cavity allowing for a low threshold current, on a semipolar surface of a support base in which the c-axis of a hexagonal group-III nitride is tilted toward the m-axis. First and second fractured faces 27, 29 to form the laser cavity intersect with an m-n plane. The group-III nitride semiconductor laser device 11 has a laser waveguide extending in a direction of an intersecting line between the m-n plane and the semipolar surface 17a. In a laser structure 13, a first surface 13a is opposite to a second surface 13b. The first and second fractured faces 27, 29 extend from an edge 13c of the first surface to an edge 13d of the second surface 13b. The fractured faces are not formed by dry etching and are different from conventionally-employed cleaved facets such as c-planes, m-planes, or a-planes.

摘要翻译： 提供了在六边形III族氮化物的c轴朝向m轴倾斜的支撑基座的半极性表面上具有允许低阈值电流的激光腔的III族氮化物半导体激光器件。 第一和第二断裂面27,29以形成与m-n平面相交的激光腔。 III族氮化物半导体激光器件11具有在m-n平面和半极性表面17a之间的交线的方向上延伸的激光波导。 在激光结构13中，第一表面13a与第二表面13b相对。 第一和第二断裂面27,29从第一表面的边缘13c延伸到第二表面13b的边缘13d。 断裂面不是通过干蚀刻形成的，并且与常规使用的切割面不同，例如c面，m面或a平面。

公开(公告)号：US20110121265A1

公开(公告)日：2011-05-26

申请号：US13055690

申请日：2010-02-26

申请人： Masaki Ueno ,  Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Katsushi Akita ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

发明人： Masaki Ueno ,  Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Katsushi Akita ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

IPC分类号： H01L29/66

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01L33/16 ,  H01L33/32 ,  H01L33/325 ,  H01S5/3202

摘要： A group III nitride semiconductor optical device 11a has a group III nitride semiconductor substrate 13 having a main surface 13a forming a finite angle with a reference plane Sc orthogonal to a reference axis Cx extending in a c-axis direction of the group III nitride semiconductor and an active layer 17 of a quantum-well structure, disposed on the main surface 13a of the group III nitride semiconductor substrate 13, including a well layer 28 made of a group III nitride semiconductor and a plurality of barrier layers 29 made of a group III nitride semiconductor. The main surface 13a exhibits semipolarity. The active layer 17 has an oxygen content of at least 1×1017 cm−3 but not exceeding 8×1017 cm−3. The plurality of barrier layers 29 contain an n-type impurity other than oxygen by at least 1×1017 cm−3 but not exceeding 1×1019 cm−3 in an upper near-interface area 29u in contact with a lower interface 28Sd of the well layer 28 on the group III nitride semiconductor substrate side.

摘要翻译： III族氮化物半导体光学元件11a具有III族氮化物半导体衬底13，该III族氮化物半导体衬底13具有与在III族氮化物半导体的c轴方向上延伸的参考轴Cx正交的参考平面Sc形成有限角度的主表面13a; 设置在III族氮化物半导体衬底13的主表面13a上的量子阱结构的有源层17，包括由III族氮化物半导体制成的阱层28和由III族组成的多个势垒层29 氮化物半导体。 主表面13a具有半极性。 活性层17的氧含量至少为1×1017cm-3，但不超过8×1017cm-3。 多个势垒层29在上接近界面区域29u中含有除氧之外的至少1×1017cm-3但不超过1×1019cm-3的n型杂质，该上接近界面区29u与下界面28Sd接触 III族氮化物半导体衬底侧的阱层28。

公开(公告)号：US08619828B2

公开(公告)日：2013-12-31

申请号：US12836065

申请日：2010-07-14

申请人： Katsushi Akita ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Shinji Tokuyama ,  Yusuke Yoshizumi ,  Takamichi Sumitomo ,  Masaki Ueno

发明人： Katsushi Akita ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Shinji Tokuyama ,  Yusuke Yoshizumi ,  Takamichi Sumitomo ,  Masaki Ueno

IPC分类号： H01S5/343

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01S5/2004 ,  H01S5/2009 ,  H01S5/3202

摘要： A group III nitride substrate has a semi-polar primary surface. A first cladding layer has a first conductivity type, and comprises aluminum-containing group III nitride. The first cladding layer is provided on the substrate. An active layer is provided on the first cladding layer. A second cladding layer has a second conductivity type, and comprises aluminum-containing group III nitride. The second cladding layer is provided on the active layer. An optical guiding layer is provided between the first cladding layer and the active layer and/or between the second cladding layer and the active layer. The optical guiding layer comprises a first layer comprising Inx1Ga1-x1N (0≦x1

摘要翻译： III族氮化物衬底具有半极性主表面。 第一包层具有第一导电类型，并且包括含铝的III族氮化物。 第一包层设置在基板上。 在第一包层上设置有源层。 第二包层具有第二导电类型，并且包括含铝的III族氮化物。 第二包覆层设置在有源层上。 在第一包层和有源层之间和/或第二包层和有源层之间设置光导层。 光引导层包括包含In x Ga 1-x N（0 @ x1 <1）的第一层和包括In x 2 Ga 1-x 2 N（x 1

公开(公告)号：US20110241016A1

公开(公告)日：2011-10-06

申请号：US13054037

申请日：2010-06-18

申请人： Takashi Kyono ,  Yohei Enya ,  Yusuke Yoshizumi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

发明人： Takashi Kyono ,  Yohei Enya ,  Yusuke Yoshizumi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

IPC分类号： H01L33/16 ,  H01L33/30

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01L33/16 ,  H01L33/32 ,  H01S5/22 ,  H01S5/3202 ,  H01S5/3213 ,  H01S5/3404

摘要： A nitride-based semiconductor light-emitting element LE1 or LD1 has: a gallium nitride substrate 11 having a principal surface 11a which makes an angle α, in the range 40° to 50° or in the range more than 90° to 130°, with the reference plane Sc perpendicular to the reference axis Cx extending in the c axis direction; an n-type gallium nitride-based semiconductor layer 13; a second gallium nitride-based semiconductor layer 17; and a light-emitting layer 15 including a plurality of well layers of InGaN and a plurality of barrier layers 23 of a GaN-based semiconductor, wherein the direction of piezoelectric polarization of the plurality of well layers 21 is the direction from the n-type gallium nitride-based semiconductor layer 13 toward the second gallium nitride-based semiconductor layer 17.

摘要翻译： 氮化物系半导体发光元件LE1或LD1具有：氮化镓衬底11，其具有在40°至50°的范围内或大于90°至130°的范围内具有角度α的主表面11a， 其中参考平面Sc垂直于在c轴方向上延伸的参考轴线Cx; n型氮化镓系半导体层13; 第二氮化镓基半导体层17; 以及包括多个InGaN阱层和GaN基半导体的多个势垒层23的发光层15，其中多个阱层21的压电极化的方向是来自n型的方向 氮化镓系半导体层13朝向第二氮化镓系半导体层17。

公开(公告)号：US07933303B2

公开(公告)日：2011-04-26

申请号：US12844446

申请日：2010-07-27

申请人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

发明人： Yusuke Yoshizumi ,  Yohei Enya ,  Takashi Kyono ,  Masahiro Adachi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Shinji Tokuyama ,  Koji Katayama ,  Takao Nakamura ,  Takatoshi Ikegami

IPC分类号： H01S5/00

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01S5/0202 ,  H01S5/028 ,  H01S5/3202 ,  H01S2301/14

摘要： Provided is a group-III nitride semiconductor laser device with a laser cavity allowing for a low threshold current, on a semipolar surface of a support base in which the c-axis of a hexagonal group-III nitride is tilted toward the m-axis. First and second fractured faces 27, 29 to form the laser cavity intersect with an m-n plane. The group-III nitride semiconductor laser device 11 has a laser waveguide extending in a direction of an intersecting line between the m-n plane and the semipolar surface 17a. For this reason, it is feasible to make use of emission by a band transition enabling the low threshold current. In a laser structure 13, a first surface 13a is opposite to a second surface 13b. The first and second fractured faces 27, 29 extend from an edge 13c of the first surface 13a to an edge 13d of the second surface 13b. The fractured faces are not formed by dry etching and are different from conventionally-employed cleaved facets such as c-planes, m-planes, or a-planes.

摘要翻译： 提供了在六边形III族氮化物的c轴朝向m轴倾斜的支撑基座的半极性表面上具有允许低阈值电流的激光腔的III族氮化物半导体激光器件。 第一和第二断裂面27,29以形成与m-n平面相交的激光腔。 III族氮化物半导体激光器件11具有在m-n平面和半极性表面17a之间的交线的方向上延伸的激光波导。 因此，通过能够实现低阈值电流的带状转变来利用发射是可行的。 在激光结构13中，第一表面13a与第二表面13b相对。 第一和第二断裂面27,29从第一表面13a的边缘13c延伸到第二表面13b的边缘13d。 断裂面不是通过干蚀刻形成的，并且与常规使用的切割面不同，例如c面，m面或a平面。

公开(公告)号：US08803274B2

公开(公告)日：2014-08-12

申请号：US13054037

申请日：2010-06-18

申请人： Takashi Kyono ,  Yohei Enya ,  Yusuke Yoshizumi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

发明人： Takashi Kyono ,  Yohei Enya ,  Yusuke Yoshizumi ,  Katsushi Akita ,  Masaki Ueno ,  Takamichi Sumitomo ,  Masahiro Adachi ,  Shinji Tokuyama

IPC分类号： H01L31/102 ,  H01L33/32 ,  B82Y20/00 ,  H01S5/343 ,  H01L33/16 ,  H01S5/34 ,  H01S5/32 ,  H01S5/22

CPC分类号： H01S5/34333 ,  B82Y20/00 ,  H01L33/16 ,  H01L33/32 ,  H01S5/22 ,  H01S5/3202 ,  H01S5/3213 ,  H01S5/3404

摘要： A nitride-based semiconductor light-emitting element LE1 or LD1 has: a gallium nitride substrate 11 having a principal surface 11a which makes an angle α, in the range 40° to 50° or in the range more than 90° to 130°, with the reference plane Sc perpendicular to the reference axis Cx extending in the c axis direction; an n-type gallium nitride-based semiconductor layer 13; a second gallium nitride-based semiconductor layer 17; and a light-emitting layer 15 including a plurality of well layers of InGaN and a plurality of barrier layers 23 of a GaN-based semiconductor, wherein the direction of piezoelectric polarization of the plurality of well layers 21 is the direction from the n-type gallium nitride-based semiconductor layer 13 toward the second gallium nitride-based semiconductor layer 17.

摘要翻译： 氮化物系半导体发光元件LE1或LD1具有：氮化镓衬底11，其具有在40°至50°的范围内或大于90°至130°的范围内具有角度α的主表面11a， 其中参考平面Sc垂直于在c轴方向上延伸的参考轴线Cx; n型氮化镓系半导体层13; 第二氮化镓基半导体层17; 以及包括多个InGaN阱层和GaN基半导体的多个势垒层23的发光层15，其中多个阱层21的压电极化的方向是来自n型的方向 氮化镓系半导体层13朝向第二氮化镓系半导体层17。