Abstract:
Radiation-emitting and/or -receiving semiconductor chip (1) has a radiation coupling and/or decoupling microstructure arranged in a material layer of the semiconductor chip using a mask material which dampens the material layer so that it forms a number of partially cross-linked islands (280) separated from each other.
Abstract:
Disclosed is a radiation-emitting semiconductor component comprising a layered structure (12) which is provided with a photon-emitting active layer (16), an n-doped cladding layer (14), and a p-doped cladding layer (18), a contact that is connected to the n-doped cladding layer (14), and a reflector layer (20) that is connected to the p-doped cladding layer (18). The inventive reflector layer (20) is formed by an alloy of silver and one or several metals of the group comprising Ru, Rh, Pd, Au, Os, Ir, Pt, Cu, Ti, Ta, and Cr.
Abstract:
Disclosed is a surface-emitting semiconductor laser component, especially an electrically pumped semiconductor laser component, which features emission in a vertical direction and is used for generating laser radiation by means of an external optical resonator (4,5). Said semiconductor laser component comprises a semiconductor element with a sequence (2) of semiconductor layers which is provided with a lateral main direction of extension and an active zone (3) used for generating radiation. A radiation-permeable contact layer (6) is disposed within the resonator and is connected to the semiconductor element in an electrically conducting manner.
Abstract:
Manufacturing methods for a thin-film semiconductor chip based on a III/V-III/V semiconductor compound material and capable of generating electromagnetic radiation. In one method, a succession of active layers is applied to a growth substrate. Applied to the reverse side of the active layers is a dielectric layer. Laser energy is introduced into a defined volumetric section of the dielectric layer to form an opening. Subsequently, a metallic layer is applied to form a succession of reflective layers, to fill the opening with metallic material and to create a reverse-side electrically conductive contact point to the reverse side of the succession of active layers. Pursuant to another method, a succession of reflective layers is applied to the active layers and laser energy is applied to a volumetric section of the reflective layers, to create a reverse-side electrically conductive contact point.
Abstract:
Electrical contact comprises a mirror layer containing a layer (2) made from a gold-germanium alloy and a gold layer (3), a barrier layer (4) made from material deposited by thermal vaporization and a solder layer (7). An independent claim is also included for a process for the production of the electrical contact.
Abstract:
Radiation-emitting semiconductor chip (1) comprises a brightness adjusting layer (12) arranged between a connecting region (4) and a current injection region (5) on a radiation coupling surface (10) of a semiconductor layer sequence (3) to absorb a part of the radiation produced in the semiconductor layer sequence. Independent claims are also included for: (a) process for adjusting the brightness of a radiation-emitting semiconductor chip; and (b) process for the production of a semiconductor chip.
Abstract:
The electrical contact of optoelectronic semiconductor chip (1) has a mirror layer (2), a protective layer (3), a barrier layer (4), an adhesion medium layer (5) and a solder layer (8). The mirror layer contains metal or metal alloy. The protective layer reduces corrosion of mirror layer. The mirror layer contains silver, aluminum or platinum. The protective layer contains titanium or platinum. The barrier layer contains titanium-tungsten nitride (TiW (N)). The adhesion medium layer contains titanium. An independent claim is included for manufacture electrical contact.
Abstract:
Deposition of a temperable multilayer contact coating, especially a tempered multilayer contact metallizing onto a semiconductor material by the steps: application of a masking layer to the semiconductor, formation of a window in the masking layer, application of a contact metal layer to the semiconductor, application of an external layer and/or a barrier layer on or above the contact metal layer (4), and removal of the contact metal on the masking layer.
Abstract:
Radiation-emitting semiconductor component comprises a semiconductor body (1) having an active zone (2), a structured contact layer (3) arranged on the surface of the semiconductor body, and intermediate chambers (4) provided over the contact layer to form free surfaces (5) on the surface which are not covered by the contact layer. The free surfaces are covered by a mirror (6).