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1. 发明申请

US20050263780A1 Light emitting diodes with graded composition active regions 失效
公开(公告)号：US20050263780A1
公开(公告)日：2005-12-01
申请号：US11177670
申请日：2005-07-07
申请人： David Bour , Nathan Gardner , Werner Goetz , Stephen Stockman , Tetsuya Takeuchi , Ghulam Hasnain , Christopher Kocot , Mark Hueschen
发明人： David Bour , Nathan Gardner , Werner Goetz , Stephen Stockman , Tetsuya Takeuchi , Ghulam Hasnain , Christopher Kocot , Mark Hueschen
IPC分类号： H01L33/06 , H01L33/32 , H01L33/00
CPC分类号： H01L33/32 , H01L33/06
摘要： A light emitting device in accordance with an embodiment of the present invention includes a first semiconductor layer of a first conductivity type having a first surface, and an active region formed overlying the first semiconductor layer. The active region includes a second semiconductor layer which is either a quantum well layer or a barrier layer. The second semiconductor layer is formed from a semiconductor alloy having a composition graded in a direction substantially perpendicular to the first surface of the first semiconductor layer. The light emitting device also includes a third semiconductor layer of a second conductivity type formed overlying the active region.

2. 发明申请

US20050167690A1 III-NITRIDE LIGHT-EMITTING DEVICES WITH IMPROVED HIGH-CURRENT EFFICIENCY 有权
标题翻译：具有改善的高效率的III-NITRIDE发光装置
公开(公告)号：US20050167690A1
公开(公告)日：2005-08-04
申请号：US10769590
申请日：2004-01-30
申请人： Nathan Gardner , Christopher Kocot , Stephen Stockman
发明人： Nathan Gardner , Christopher Kocot , Stephen Stockman
IPC分类号： H01L33/00 , H01L33/32 , H01L29/24
CPC分类号： H01L33/32
摘要： A light-emitting semiconductor device comprises a III-Nitride active region and a III-Nitride layer formed proximate to the active region and having a thickness that exceeds a critical thickness for relaxation of strain in the III-Nitride layer. The III-Nitride layer may be a carrier confinement layer, for example. In another aspect of the invention, a light-emitting semiconductor device comprises a III-Nitride light emitting layer, an InxAlyGa1-x-yN (0≦x≦1, 0≦y≦1, x+y≦1), and a spacer layer interposing the light emitting layer and the InxAlyGa1-x-yN layer. The spacer layer may advantageously space the InxAlyGa1-x-yN layer and any contaminants therein apart from the light emitting layer. The composition of the III-Nitride layer may be advantageously selected to determine a strength of an electric field in the III-Nitride layer and thereby increase the efficiency with which the device emits light.
摘要翻译：发光半导体器件包括在有源区附近形成的III-氮化物有源区和III-氮化物层，其厚度超过III-氮化物层中的应变松弛的临界厚度。例如，III-氮化物层可以是载流子限制层。在本发明的另一方面中，一种发光半导体器件包括III族氮化物发光层，In-Al 2 O 3，Ga 1-xy， SUB> N（0 <= x <= 1,0,0 <= y <= 1，x + y <= 1），以及插入发光层和In < 1＆lt; 1＆gt; Ga 1-xy N层。间隔层可以有利地将In和/或Al 2 Y 1 Ga 1-x-y N N层及其中的任何污染物与发光层隔开。可以有利地选择III-氮化物层的组成以确定III-氮化物层中的电场的强度，从而提高器件发光的效率。

3. 发明申请

US20070145384A1 III-Nitride Light Emitting Device with Double Heterostructure Light Emitting Region 有权
标题翻译：具有双异质结构发光区域的III型氮化物发光器件
公开(公告)号：US20070145384A1
公开(公告)日：2007-06-28
申请号：US11682276
申请日：2007-03-05
申请人： Nathan Gardner , Gangyi Chen , Werner Goetz , Michael Krames , Gerd Mueller , Yu-Chen Shen , Satoshi Watanabe
发明人： Nathan Gardner , Gangyi Chen , Werner Goetz , Michael Krames , Gerd Mueller , Yu-Chen Shen , Satoshi Watanabe
IPC分类号： H01L33/00
CPC分类号： H01L33/32 , H01L33/02 , H01L33/025 , H01L33/06 , H01L33/325
摘要： In a device, a III-nitride light emitting layer is disposed between an n-type region and a p-type region. A first spacer layer, which is disposed between the n-type region and the light emitting layer, is doped to a dopant concentration between 6×1018 cm3 and 5×1019 cm−3. A second spacer layer, which is disposed between the p-type region and the light emitting layer, is not intentionally doped or doped to a dopant concentration less than 6×1018 cm−3.
摘要翻译：在器件中，III族氮化物发光层设置在n型区域和p型区域之间。设置在n型区域和发光层之间的第一间隔层被掺杂到掺杂剂浓度为6×10 18 cm -3和5×10 6 19厘米-3 -3。设置在p型区域和发光层之间的第二间隔层不是有意地掺杂或掺杂到掺杂剂浓度小于6×10 -3 -3 -3倍 >。

4. 发明申请

US20060197100A1 Reverse polarization light emitting region for a semiconductor light emitting device 有权
标题翻译：用于半导体发光器件的反向偏振发光区域
公开(公告)号：US20060197100A1
公开(公告)日：2006-09-07
申请号：US11226185
申请日：2005-09-13
申请人： Yu-Chen Shen , Michael Krames , Nathan Gardner
发明人： Yu-Chen Shen , Michael Krames , Nathan Gardner
IPC分类号： H01L33/00 , H01L29/22
CPC分类号： H01L33/32 , H01L33/16
摘要： A semiconductor light emitting device includes a light emitting layer disposed between an n-type region and a p-type region. The light emitting layer may be a wurtzite III-nitride layer with a thickness of at least 50 angstroms. The light emitting layer may have a polarization reversed from a conventional wurtzite III-nitride layer, such that across an interface between the light emitting layer and the p-type region, the wurtzite c-axis points toward the light emitting layer. Such an orientation of the c-axis may create a negative sheet charge at an interface within or at the edge of the p-type region, providing a barrier to charge carriers in the light emitting layer.
摘要翻译：半导体发光器件包括设置在n型区域和p型区域之间的发光层。发光层可以是厚度至少为50埃的纤锌矿III族氮化物层。发光层可以具有与常规的纤锌矿III族氮化物层相反的偏振，使得在发光层和p型区域之间的界面上，纤锌矿c轴指向发光层。 c轴的这种取向可以在p型区域的边缘内或边缘处的界面处产生负片材电荷，为发光层中的载流子提供阻挡。

5. 发明申请

US20060220031A1 A1lnGaP LED having reduced temperature dependence 有权
标题翻译： AlInGaP LED具有降低的温度依赖性
公开(公告)号：US20060220031A1
公开(公告)日：2006-10-05
申请号：US11100080
申请日：2005-04-05
申请人： Michael Krames , Nathan Gardner , Frank Steranka
发明人： Michael Krames , Nathan Gardner , Frank Steranka
IPC分类号： H01L33/00
CPC分类号： H01L33/30 , H01L2224/13 , H01L2924/00011 , H01L2924/00014 , H01L2224/0401
摘要： To increase the lattice constant of AlInGaP LED layers to greater than the lattice constant of GaAs for reduced temperature sensitivity, an engineered growth layer is formed over a substrate, where the growth layer has a lattice constant equal to or approximately equal to that of the desired AlInGaP layers. In one embodiment, a graded InGaAs or InGaP layer is grown over a GaAs substrate. The amount of indium is increased during growth of the layer such that the final lattice constant is equal to that of the desired AlInGaP active layer. In another embodiment, a very thin InGaP, InGaAs, or AlInGaP layer is grown on a GaAs substrate, where the InGaP, InGaAs, or AlInGaP layer is strained (compressed). The InGaP, InGaAs, or AlInGaP thin layer is then delaminated from the GaAs and relaxed, causing the lattice constant of the thin layer to increase to the lattice constant of the desired overlying AlInGaP LED layers. The LED layers are then grown over the thin InGaP, InGaAs, or AlInGaP layer.
摘要翻译：为了将AlInGaP LED层的晶格常数提高到大于GaAs的晶格常数以降低温度敏感性，在衬底上形成工程化生长层，其中生长层具有等于或近似等于所需的晶格常数的晶格常数 AlInGaP层。在一个实施例中，在GaAs衬底上生长渐变的InGaAs或InGaP层。在层的生长期间铟的量增加，使得最终晶格常数等于所需的AlInGaP活性层的量。在另一实施例中，在GaAs衬底上生长非常薄的InGaP，InGaAs或AlInGaP层，其中InGaP，InGaAs或AlInGaP层被应变（压缩）。然后，InGaP，InGaAs或AlInGaP薄层从GaAs分层并且弛豫，导致薄层的晶格常数增加到期望的上覆AlInGaP LED层的晶格常数。然后在薄的InGaP，InGaAs或AlInGaP层上生长LED层。

6. 发明申请

US20050205884A1 Semiconductor light emitting devices including in-plane light emitting layers 失效
标题翻译：包括平面内发光层的半导体发光器件
公开(公告)号：US20050205884A1
公开(公告)日：2005-09-22
申请号：US10805424
申请日：2004-03-19
申请人： Jarnes Kim , John Epler , Nathan Gardner , Michael Krames , Jonathan Wierer
发明人： Jarnes Kim , John Epler , Nathan Gardner , Michael Krames , Jonathan Wierer
IPC分类号： G02B5/30 , H01L33/10 , H01L33/18 , H01L33/32 , H01L33/40 , H01L33/46 , H01S5/183 , H01S5/323 , H01L33/00
CPC分类号： H01L33/18 , H01L25/0756 , H01L33/105 , H01L33/32 , H01L33/405 , H01L33/46 , H01L2924/0002 , H01L2933/0083 , H01L2924/00
摘要： A semiconductor light emitting device includes an in-plane active region that emits linearly-polarized light. An in-plane active region may include, for example, a {11{overscore (2)}0} or {10{overscore (1)}0} InGaN light emitting layer. In some embodiments, a polarizer oriented to pass light of a polarization of a majority of light emitted by the active region serves as a contact. In some embodiments, two active regions emitting the same or different colored light are separated by a polarizer oriented to pass light of a polarization of a majority of light emitted by the bottom active region, and to reflect light of a polarization of a majority of light emitted by the top active region. In some embodiments, a polarizer reflects light scattered by a wavelength converting layer.
摘要翻译：半导体发光器件包括发射线偏振光的面内有源区域。面内有源区可以包括例如{11 {过滤（20）或{10 {超（10）InGaN发光层）。在一些实施例中，定向为使通过大部分在一些实施例中，发射相同或不同着色光的两个有源区域被定向成通过底部有源区域发射的大部分光的偏振光的偏振器隔开，以及以反射由顶部有源区域发射的大部分光的偏振光。在一些实施例中，偏振器反射由波长转换层散射的光。

7. 发明申请

US20070131961A1 AlInGaP LED Having Reduced Temperature Dependence 有权
标题翻译：具有降低温度依赖性的AlInGaP LED
公开(公告)号：US20070131961A1
公开(公告)日：2007-06-14
申请号：US11672003
申请日：2007-02-06
申请人： Michael Krames , Nathan Gardner , Frank Steranka
发明人： Michael Krames , Nathan Gardner , Frank Steranka
IPC分类号： H01L33/00 , H01L21/00
CPC分类号： H01L33/30 , H01L2224/13 , H01L2924/00011 , H01L2924/00014 , H01L2224/0401
摘要： To increase the lattice constant of AlInGaP LED layers to greater than the lattice constant of GaAs for reduced temperature sensitivity, an engineered growth layer is formed over a substrate, where the growth layer has a lattice constant equal to or approximately equal to that of the desired AlInGaP layers. In one embodiment, a graded InGaAs or InGaP layer is grown over a GaAs substrate. The amount of indium is increased during growth of the layer such that the final lattice constant is equal to that of the desired AlInGaP active layer. In another embodiment, a very thin InGaP, InGaAs, or AlInGaP layer is grown on a GaAs substrate, where the InGaP, InGaAs, or AlInGaP layer is strained (compressed). The InGaP, InGaAs, or AlInGaP thin layer is then delaminated from the GaAs and relaxed, causing the lattice constant of the thin layer to increase to the lattice constant of the desired overlying AlInGaP LED layers. The LED layers are then grown over the thin InGaP, InGaAs, or AlInGaP layer.
摘要翻译：为了将AlInGaP LED层的晶格常数提高到大于GaAs的晶格常数以降低温度敏感性，在衬底上形成工程化生长层，其中生长层具有等于或近似等于所需的晶格常数的晶格常数 AlInGaP层。在一个实施例中，在GaAs衬底上生长渐变的InGaAs或InGaP层。在层的生长期间铟的量增加，使得最终晶格常数等于所需的AlInGaP活性层的量。在另一实施例中，在GaAs衬底上生长非常薄的InGaP，InGaAs或AlInGaP层，其中InGaP，InGaAs或AlInGaP层被应变（压缩）。然后，InGaP，InGaAs或AlInGaP薄层从GaAs分层并且弛豫，导致薄层的晶格常数增加到期望的上覆AlInGaP LED层的晶格常数。然后在薄的InGaP，InGaAs或AlInGaP层上生长LED层。

8. 发明申请

US20070069225A1 III-V light emitting device 审中-公开
标题翻译： III-V发光装置
公开(公告)号：US20070069225A1
公开(公告)日：2007-03-29
申请号：US11237215
申请日：2005-09-27
申请人： Michael Krames , Nathan Gardner , John Epler
发明人： Michael Krames , Nathan Gardner , John Epler
IPC分类号： H01L33/00 , H01L29/22
CPC分类号： H01L21/2654 , H01L21/76254 , H01L33/0075 , H01L33/0079 , H01S5/32341 , H01S2304/12
摘要： A semiconductor structure includes an n-type region, a p-type region, and a III-nitride light emitting layer disposed between the n-type region and the p-type region. The III-nitride light emitting layer has a lattice constant greater than 3.19 Å. Such a semiconductor structure may be grown on a substrate including a host and a seed layer bonded to the host. In some embodiments, a bonding layer bonds the host to the seed layer. The seed layer may be thinner than a critical thickness for relaxation of strain in the semiconductor structure, such that strain in the semiconductor structure is relieved by dislocations formed in the seed layer, or by gliding between the seed layer and the bonding layer an interface between the two layers. In some embodiments, the host may be separated from the semiconductor structure and seed layer by etching away the bonding layer.
摘要翻译：半导体结构包括设置在n型区域和p型区域之间的n型区域，p型区域和III族氮化物发光层。 III族氮化物发光层的晶格常数大于3.19埃。这样的半导体结构可以在包含与主体结合的主体和种子层的基板上生长。在一些实施方案中，结合层将主体结合到种子层。种子层可以比用于缓和半导体结构中的应变的临界厚度薄，使得半导体结构中的应变由种子层中形成的位错或通过在种子层和结合层之间滑动而消除，两层。在一些实施例中，可以通过蚀刻掉粘合层来将主体与半导体结构和种子层分离。

9. 发明申请

US20060284187A1 Grown photonic crystals in semiconductor light emitting devices 有权
公开(公告)号：US20060284187A1
公开(公告)日：2006-12-21
申请号：US11156105
申请日：2005-06-17
申请人： Jonathan Wierer , Michael Krames , Nathan Gardner
发明人： Jonathan Wierer , Michael Krames , Nathan Gardner
IPC分类号： H01L27/15
CPC分类号： C30B29/60 , B82Y20/00 , G02B6/1225 , H01L33/08 , H01L33/18 , H01L33/24 , H01L2933/0083 , H01S5/105 , H01S5/34333
摘要： A photonic crystal is grown within a semiconductor structure, such as a III-nitride structure, which includes a light emitting region disposed between an n-type region and a p-type region. The photonic crystal may be multiple regions of semiconductor material separated by a material having a different refractive index than the semiconductor material. For example, the photonic crystal may be posts of semiconductor material grown in the structure and separated by air gaps or regions of masking material. Growing the photonic crystal, rather than etching a photonic crystal into an already-grown semiconductor layer, avoids damage caused by etching which may reduce efficiency, and provides uninterrupted, planar surfaces on which to form electric contacts.

10. 发明申请

US20070072324A1 Substrate for growing a III-V light emitting device 有权
标题翻译：用于生长III-V发光器件的衬底
公开(公告)号：US20070072324A1
公开(公告)日：2007-03-29
申请号：US11237164
申请日：2005-09-27
申请人： Michael Krames , Nathan Gardner , John Epler
发明人： Michael Krames , Nathan Gardner , John Epler
IPC分类号： H01L21/00 , H01G9/20
CPC分类号： H01L21/76256 , C30B25/183 , C30B29/40 , C30B29/403 , H01L21/76254 , H01L33/007 , H01L33/0079
摘要： A substrate including a host and a seed layer bonded to the host is provided, then a semiconductor structure including a light emitting layer disposed between an n-type region and a p-type region is grown on the seed layer. In some embodiments, a bonding layer bonds the host to the seed layer. The seed layer may be thinner than a critical thickness for relaxation of strain in the semiconductor structure, such that strain in the semiconductor structure is relieved by dislocations formed in the seed layer, or by gliding between the seed layer and the bonding layer an interface between the two layers. In some embodiments, the host may be separated from the semiconductor structure and seed layer by etching away the bonding layer.
摘要翻译：提供了包括与主体结合的主体和种子层的基板，然后在种子层上生长包括设置在n型区域和p型区域之间的发光层的半导体结构。在一些实施方案中，结合层将主体结合到种子层。种子层可以比用于缓和半导体结构中的应变的临界厚度薄，使得半导体结构中的应变由种子层中形成的位错或通过在种子层和结合层之间滑动而消除，两层。在一些实施例中，可以通过蚀刻掉粘合层来将主体与半导体结构和种子层分离。

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