Abstract:
A radiation-emitting semiconductor component has a multiple layer structure (4) containing a radiation-emitting active layer (5), and a radiation-permeable window (1) having main surfaces (2, 3) and a recess (8) for forming radiation coupling surfaces running diagonally to the first main surface (2). At least one side surface of the window and/or recess limiting the second main surface (3) is provided with a first contact surface (11). An independent claim is also included for the production of a radiation-emitting semiconductor component comprising preparing a window layer with main surfaces; applying a semiconductor layer structure on the first main surface; structuring the window layer to form a recess in the second main surface; forming a contact surface on the side of the second main surface of the window layer; and finishing the semiconductor component. Preferred Features: The window is made from sapphire, quartz glass, diamond, ITO, tin oxide, zinc oxide, indium oxide, silicon carbide or gallium phosphide. The multiple layer structure is based on gallium nitrides.
Abstract:
Radiation-emitting semiconductor element has a semiconductor body formed by a stack of different semiconductor layers based on gallium nitride, and first and second main surfaces (3, 4). A part of the radiation produced (5) is decoupled through the first main surface and the second main surface has a reflector (6). The stack of different semiconductor layers is produced by applying an intermediate layer (9) on a substrate (8), applying a number of different gallium nitride layers on the intermediate layer, removing the substrate including the intermediate layer, and applying the reflector to the second main surface of the semiconductor body. Preferred Features: The substrate is made of silicon and the intermediate layer is made of silicon carbide. The intermediate layer is connected to the substrate by wafer bonding.
Abstract:
According to the invention, a semiconductor component is produced for the emission of electromagnetic radiation, in particular, light, which is characterised by comprising an active layer for production of radiation, a p contact, electrically connected to the active layer, an n contact, electrically connected to the active layer and a current limiting structure for the definition of a current path, whereby the current limiting structure is provided between the n contact and the active layer.
Abstract:
A radiation-emitting semiconductor component has a multiple layer structure (4) containing a radiation-emitting active layer (5), and a radiation-permeable window (1) having main surfaces (2, 3) and a recess (8) for forming radiation coupling surfaces running diagonally to the first main surface (2). At least one side surface of the window and/or recess limiting the second main surface (3) is provided with a first contact surface (11). An independent claim is also included for the production of a radiation-emitting semiconductor component comprising preparing a window layer with main surfaces; applying a semiconductor layer structure on the first main surface; structuring the window layer to form a recess in the second main surface; forming a contact surface on the side of the second main surface of the window layer; and finishing the semiconductor component. Preferred Features: The window is made from sapphire, quartz glass, diamond, ITO, tin oxide, zinc oxide, indium oxide, silicon carbide or gallium phosphide. The multiple layer structure is based on gallium nitrides.
Abstract:
Disclosed is an optoelectronic semiconductor component comprising a supporting substrate as well as an intermediate layer that provides adhesion between the supporting substrate and a component structure. The component structure encompasses an active layer that is used for generating radiation.
Abstract:
The invention relates to a thin-film LED comprising an active layer (7) consisting of a nitride compound semiconductor that emits electromagnetic radiation (19) in a main radiation direction (15), a current-dispersing layer (9) succeeding the active layer (7) in the main radiation direction and consisting of a first nitride compound semiconductor material, a main surface (14) through which the radiation emitted in the main radiation direction (15) is decoupled, and a first contact layer (11, 12, 13) located on the main surface (14). According to the invention, the transversal conductivity of the current-dispersing layer (9) is increased by the formation of a two-dimensional electron or hole gas. The two-dimensional electron or hole gas is advantageously formed by embedding at least one layer (10) consisting of a second nitride compound semiconductor material in the current-dispersing layer (9).
Abstract:
A thin-layer light-emitting diode chip (5) comprising a sequence of epitaxial layers (6) which are arranged on a carrier element (2) and which are provided with an active area (8) producing electromagnetic radiation, in addition to a reflecting layer (3) which is arranged on a main surface of the sequence of epitaxial layers (6) oriented towards the carrier element (2) and which reflects at least one part of the electromagnetic radiation produced in the sequence of epitaxial layer (6) back to said layer, wherein a structured layer (1) is arranged on a radiation decoupling surface (7) of the epitaxial layer facing away from the carrier element (2), said structured layer containing glass material and being provided with structuring which comprises projections (5) which are tapered in the direction of the radiation decoupling surface (7) and which have a lateral grid size which is smaller than the wavelength of electromagnetic radiation emitted from the sequence of epitaxial layers (6). The structured layer (1) is advantageously applied as spin-on glass and is structured by grey tone lithography.
Abstract:
The invention relates to a radiation-emitting semiconductor component with a radiation-permeable substrate (1) having a radiation-emitting layer (2) arranged on the lower side thereof, wherein said substrate (1) has inclined side surfaces (3), wherein the index of refraction of the substrate (1) is greater than the index of refraction of the radiation-producing layer, wherein a non-illuminated substrate area (4) results from the difference in the index of refraction and into which no photons can be directly injected from the radiation-producing layer, and wherein the substrate (1) is provided with essentially perpendicular side surfaces (5) in the non-illuminated area thereof. One advantage of the component is that it can be produced with a better surface yield from a wafer.
Abstract:
A method for producing semiconductor elements by means of epitaxy, comprising the following steps: a) an HF- soluble mask coating with epitaxial windows is applied to an epitaxial substrate, b) a semiconductor layer or series of layers is/are epitaxially deposited on the areas of the epitaxial substrate that are kept free by said epitaxial windows in an epitaxial reactor, and c) the masking material is removed using a fluorine compound that is introduced into the epitaxial reactor.
Abstract:
Es wird ein Verfahren zur Herstellung eines optoelektronischen Bauelements (12) angegeben, bei dem eine Transferschicht (2), die InxGa1-xN mit 0 x enthält, auf die zuvor aufgewachsene Transferschicht (2) aufgewachsen, Ionen in die weitere Transferschicht (7) zur Ausbildung einer Trennzone (4) implantiert, ein weiteres Trägersubstrat (8) aufgebracht, und die weitere Transferschicht (7) durch eine Temperaturbehandlung zertrennt. Nachfolgend wird eine Halbleiterschichtenfolge (9), die eine aktive Schicht (10) enthält, auf die vom weiteren Trägersubstrat (8) abgewandte Oberfläche der weiteren Transferschicht (7) aufgewachsen.