摘要:
A semiconductor component has a plurality of GaN-based layers, which are preferably used to generate radiation, produced in a fabrication process. In the process, the plurality of GaN-based layers are applied to a composite substrate that includes a substrate body and an interlayer. A coefficient of thermal expansion of the substrate body is similar to or preferably greater than the coefficient of thermal expansion of the GaN-based layers, and the GaN-based layers are deposited on the interlayer. The interlayer and the substrate body are preferably joined by a wafer bonding process.
摘要:
A semiconductor component has a plurality of GaN-based layers, which are preferably used to generate radiation, produced in a fabrication process. In the process, the plurality of GaN-based layers are applied to a composite substrate that includes a substrate body and an interlayer. A coefficient of thermal expansion of the substrate body is similar to or preferably greater than the coefficient of thermal expansion of the GaN-based layers, and the GaN-based layers are deposited on the interlayer. The interlayer and the substrate body are preferably joined by a wafer bonding process.
摘要:
A semiconductor component has a plurality of GaN-based layers, which are preferably used to generate radiation, produced in a fabrication process. In the process, the plurality of GaN-based layers are applied to a composite substrate that includes a substrate body and an interlayer. A coefficient of thermal expansion of the substrate body is similar to or preferably greater than the coefficient of thermal expansion of the GaN-based layers, and the GaN-based layers are deposited on the interlayer. The interlayer and the substrate body are preferably joined by a wafer bonding process.
摘要:
Method for fabricating a semiconductor chip which emits electromagnetic radiation, wherein to improve the light yield of semiconductor chips which emit electromagnetic radiation, a textured reflection surface is integrated on the p-side of a semiconductor chip. The semiconductor chip has an epitaxially produced semiconductor layer stack based on GaN, which comprises an n-conducting semiconductor layer, a p-conducting semiconductor layer and an electromagnetic radiation generating region which is arranged between these two semiconductor layers. The surface of the p-conducting semiconductor layer which faces away from the radiation-generating region is provided with three-dimensional pyramid-like structures. A mirror layer is arranged over the whole of this textured surface. A textured reflection surface is formed between the mirror layer and the p-conducting semiconductor layer.
摘要:
A semiconductor chip which emits electromagnetic radiation is presented. The chip includes an epitaxially produced semiconductor layer stack based on nitride semiconductor material, which includes an n-conducting semiconductor layer, a p-conducting semiconductor layer, and an electromagnetic radiation generating region, which is arranged between these two semiconductor layers. The chip further includes a base on which the semiconductor layer stack is arranged, and a mirror layer, which is arranged between the semiconductor layer stack and the base. The n-conducting semiconductor layer faces away from the base, and the n-conducting semiconductor layer or an outcoupling layer located on the n-conducting semiconductor layer has a radiation-outcoupling surface which, in turn, includes planar outcoupling sub-surfaces, which are positioned obliquely with respect to a main plane of the radiation-generating region and each form an angle of between 15° and 70° with this plane.
摘要:
Semiconductor chip which emits electromagnetic radiation, and method for fabricating it. To improve the light yield of semiconductor chips which emit electromagnetic radiation, a textured reflection surface (131) is integrated on the p-side of a semiconductor chip. The semiconductor chip has an epitaxially produced semiconductor layer stack (1) based on GaN, which comprises an n-conducting semiconductor layer (11), a p-conducting semiconductor layer (13) and an electromagnetic radiation generating region (12) which is arranged between these two semiconductor layers (11, 13). The surface of the p-conducting semiconductor layer (13) which faces away from the radiation-generating region (12) is provided with three-dimensional pyramid-like structures (15). A mirror layer (40) is arranged over the whole of this textured surface. A textured reflection surface (131) is formed between the mirror layer (40) and the p-conducting semiconductor layer (13). The textured reflection surface (131) can increase the amount of light which is decoupled at the radiation-outcoupling surface (111) by virtue of the fact that a beam (3), after double reflection on the reflection surface (131), is more likely not to be totally reflected.
摘要:
A luminescent diode chip for flip-chip mounting on a carrier, having a conductive substrate (12), a semiconductor body (14) that contains a photon-emitting active zone and that is joined by an underside to the substrate (12), and a contact (18), disposed on a top side of the semiconductor body (14), for making an electrically conductive connection with the carrier (30) upon the flip-chip mounting of the chip, whereby either the carrier is solder covered or a layer of solder is applied to the contact. An insulating means (40, 42, 44, 46, 48) is provided on the chip, for electrically insulating free faces of the semiconductor body (14) and free surfaces of the substrate (12) from the solder.
摘要:
A semiconductor chip has a substrate that is in the form of a parallelepiped whose side surfaces are shaped as tilted parallelograms. Such a semiconductor chip has a high output efficiency and a homogeneous thermal load due to having at least two side surfaces that are provided with an acute angle and are in the form of parallelograms.
摘要:
A radiation-emitting chip (2) with a radiation-transmissive window (5), which has a refractive index nF and has a main area (19), with a multilayer structure (9), which contains a radiation-active layer (10) and adjoins the main area (19) of the window (5), and with a radiation-transmissive medium surrounding the window (5) and having the refractive index n0, the window (5) having at least two boundary areas (6, 7), which form an angle β, for which the relationship 90°−αt
摘要:
A luminescent diode chip for flip-chip mounting on a carrier, having a conductive substrate (12), a semiconductor body (14) that contains a photon-emitting active zone and that is joined by an underside to the substrate (12), and a contact (18), disposed on a top side of the semiconductor body (14), for making an electrically conductive connection with the carrier (30) upon the flip-chip mounting of the chip, whereby either the carrier is solder covered or a layer of solder is applied to the contact. An insulating means (40, 42, 44, 46, 48) is provided on the chip, for electrically insulating free faces of the semiconductor body (14) and free surfaces of the substrate (12) from the solder.