摘要:
A substrate comprising a trench lateral epitaxial overgrowth structure including a trench cavity, wherein the trench cavity includes a growth-blocking layer or patterned material supportive of a coalescent Pendeo layer thereon, on at least a portion of an inside surface of the trench. Such substrate is suitable for carrying out lateral epitaxial overgrowth to form a bridged lateral overgrowth formation overlying the trench cavity. The bridged lateral overgrowth formation provides a substrate surface on which epitaxial layers can be grown in the fabrication of microelectronic devices such as laser diodes, high electron mobility transistors, ultraviolet light emitting diodes, and other devices in which low dislocation density is critical. The epitaxial substrate structures of the invention can be formed without the necessity for deep trenches, such as are required in conventional Pendeo epitaxial overgrowth structures.
摘要:
A substrate comprising a trench lateral epitaxial overgrowth structure including a trench cavity, wherein the trench cavity includes a growth-blocking layer or patterned material supportive of a coalescent Pendeo layer thereon, on at least a portion of an inside surface of the trench. Such substrate is suitable for carrying out lateral epitaxial overgrowth to form a bridged lateral overgrowth formation overlying the trench cavity. The bridged lateral overgrowth formation provides a substrate surface on which epitaxial layers can be grown in the fabrication of microelectronic devices such as laser diodes, high electron mobility transistors, ultraviolet light emitting diodes, and other devices in which low dislocation density is critical. The epitaxial substrate structures of the invention can be formed without the necessity for deep trenches, such as are required in conventional Pendeo epitaxial overgrowth structures.
摘要:
A laser diode and method for fabricating same, wherein the laser diode generally comprises an InGaN compliance layer on a GaN n-type contact layer and an AlGaN/GaN n-type strained super lattice (SLS) on the compliance layer. An n-type GaN separate confinement heterostructure (SCH) is on said n-type SLS and an InGaN multiple quantum well (MQW) active region is on the n-type SCH. A GaN p-type SCH on the MQW active region, an AlGaN/GaN p-type SLS is on the p-type SCH, and a p-type GaN contact layer is on the p-type SLS. The compliance layer has an In percentage that reduces strain between the n-type contact layer and the n-type SLS compared to a laser diode without the compliance layer. Accordingly, the n-type SLS can be grown with an increased Al percentage to increase the index of refraction. This along with other features allows for reduced threshold current and voltage operation.
摘要翻译:一种激光二极管及其制造方法,其中激光二极管通常包括在GaN n型接触层上的InGaN柔性层和在柔性层上的AlGaN / GaN n型应变超晶格(SLS)。 n型GaN分离限制异质结构(SCH)在所述n型SLS上,并且InGaN多量子阱(MQW)有源区在n型SCH上。 在MQW有源区上的GaN p型SCH,AlGaN / GaN p型SLS在p型SCH上,p型GaN接触层在p型SLS上。 顺应层具有与不具有柔顺层的激光二极管相比,n型接触层和n型SLS之间的应变的In百分比。 因此,n型SLS可以以增加的Al百分数生长以增加折射率。 这与其他功能一起允许降低阈值电流和电压操作。
摘要:
A laser diode and method for fabricating same, wherein the laser diode generally comprises an InGaN compliance layer on a GaN n-type contact layer and an AlGaN/GaN n-type strained super lattice (SLS) on the compliance layer. An n-type GaN separate confinement heterostructure (SCH) is on said n-type SLS and an InGaN multiple quantum well (MQW) active region is on the n-type SCH. A GaN p-type SCH on the MQW active region, an AlGaN/GaN p-type SLS is on the p-type SCH, and a p-type GaN contact layer is on the p-type SLS. The compliance layer has an In percentage that reduces strain between the n-type contact layer and the n-type SLS compared to a laser diode without the compliance layer. Accordingly, the n-type SLS can be grown with an increased Al percentage to increase the index of refraction. This along with other features allows for reduced threshold current and voltage operation.
摘要翻译:一种激光二极管及其制造方法,其中激光二极管通常包括在GaN n型接触层上的InGaN柔性层和在柔性层上的AlGaN / GaN n型应变超晶格(SLS)。 n型GaN分离限制异质结构(SCH)在所述n型SLS上,并且InGaN多量子阱(MQW)有源区在n型SCH上。 在MQW有源区上的GaN p型SCH,AlGaN / GaN p型SLS在p型SCH上,p型GaN接触层在p型SLS上。 顺应层具有与不具有柔顺层的激光二极管相比,n型接触层和n型SLS之间的应变的In百分比。 因此,n型SLS可以以增加的Al百分数生长以增加折射率。 这与其他功能一起允许降低阈值电流和电压操作。
摘要:
A laser diode and method for fabricating same, wherein the laser diode generally comprises an InGaN compliance layer on a GaN n-type contact layer and an AlGaN/GaN n-type strained super lattice (SLS) on the compliance layer. An n-type GaN separate confinement heterostructure (SCH) is on said n-type SLS and an InGaN multiple quantum well (MQW) active region is on the n-type SCH. A GaN p-type SCH on the MQW active region, an AlGaN/GaN p-type SLS is on the p-type SCH, and a p-type GaN contact layer is on the p-type SLS. The compliance layer has an In percentage that reduces strain between the n-type contact layer and the n-type SLS compared to a laser diode without the compliance layer. Accordingly, the n-type SLS can be grown with an increased Al percentage to increase the index of refraction. This along with other features allows for reduced threshold current and voltage operation.
摘要翻译:一种激光二极管及其制造方法,其中激光二极管通常包括在GaN n型接触层上的InGaN柔性层和在柔性层上的AlGaN / GaN n型应变超晶格(SLS)。 n型GaN分离限制异质结构(SCH)在所述n型SLS上,并且InGaN多量子阱(MQW)有源区在n型SCH上。 在MQW有源区上的GaN p型SCH,AlGaN / GaN p型SLS在p型SCH上,p型GaN接触层在p型SLS上。 顺应层具有与不具有柔顺层的激光二极管相比,n型接触层和n型SLS之间的应变的In百分比。 因此,n型SLS可以以增加的Al百分数生长以增加折射率。 这与其他功能一起允许降低阈值电流和电压操作。
摘要:
A method for growth and fabrication of semipolar (Ga, Al, In, B)N thin films, heterostructures, and devices, comprising identifying desired material properties for a particular device application, selecting a semipolar growth orientation based on the desired material properties, selecting a suitable substrate for growth of the selected semipolar growth orientation, growing a planar semipolar (Ga, Al, In, B)N template or nucleation layer on the substrate, and growing the semipolar (Ga, Al, In, B)N thin films, heterostructures or devices on the planar semipolar (Ga, Al, In, B)N template or nucleation layer. The method results in a large area of the semipolar (Ga, Al, In, B)N thin films, heterostructures, and devices being parallel to the substrate surface.
摘要:
A method for the fabrication of nonpolar indium gallium nitride (InGaN) films as well as nonpolar InGaN-containing device structures using metalorganic chemical vapor deposition (MOVCD). The method is used to fabricate nonpolar InGaN/GaN violet and near-ultraviolet light emitting diodes and laser diodes.
摘要:
A method for the fabrication of nonpolar indium gallium nitride (InGaN) films as well as nonpolar InGaN-containing device structures using metalorganic chemical vapor deposition (MOVCD). The method is used to fabricate nonpolar InGaN/GaN violet and near-ultraviolet light emitting diodes and laser diodes.
摘要:
A method for growing reduced defect density planar gallium nitride (GaN) films is disclosed. The method includes the steps of (a) growing at least one silicon nitride (SiNx) nanomask layer over a GaN template, and (b) growing a thickness of a GaN film on top of the SiNx nanomask layer.
摘要翻译:公开了一种用于生长减少缺陷密度的平面氮化镓(GaN)膜的方法。 该方法包括以下步骤:(a)在GaN模板上生长至少一个氮化硅(SiN x N)纳米掩模层,以及(b)在SiN的顶部生长GaN膜的厚度, SUB> x sub>纳米掩模层。
摘要:
A light emitting device with a coupled quantum well structure in an active region. The coupled quantum well structure may include two or more wells are separated by one or more mini-barriers, and the wells and mini-barriers together are sandwiched by barriers. The coupled quantum well structure provides almost the same effect as a wide quantum well, due to the coupling of the wavefunctions through the mini-barrier. The light emitting device may be a nonpolar, semipolar or polar (Al,Ga,In)N based light emitting device.