Abstract:
The invention relates to an optoelectronic semiconductor chip (10), which comprises a semiconductor layer stack (2) and a conversion layer (3). The semiconductor layer stack (2) comprises an active layer (2a) for generating radiation. The conversion layer (3) is arranged on a radiation emission side (21) of the semiconductor layer stack (2), wherein the conversion layer (3) is suitable for converting at least a portion of the radiation emitted by the active layer (2a) into radiation having a different wavelength. The radiation emission side (21) of the semiconductor layer stack (2) has a first nanostructuring, wherein the conversion layer (3) is arranged in said first nanostructuring (4). The invention further relates to a method for producing such a semiconductor chip (10).
Abstract:
An optical projection apparatus is disclosed, comprising a first light source (1), - a second light source (2), and an imaging element (8), which is illuminated by the first (1) and the second light source (2) during operation, wherein the light source (1) comprises a light-emitting diode chip (11) that emits red light during operation, and the second light source (2) comprises a first light-emitting diode chip (21), which emits green light during operation, and a second light-emitting diode chip (22), which emits blue light during operation, wherein the second light-emitting diode chip (22) is arranged on the first light-emitting diode chip (21) at a radiation exit surface (212) of the first light-emitting diode chip (21), such that electromagnetic radiation generated in the first light-emitting diode chip (21) during operation passes through the second light-emitting diode chip (22).
Abstract:
An optoelectronic semiconductor component is disclosed, comprising an active layer (4) suitable for the emission of radiation, enclosed by cover layers (3a, 3b), wherein the cover layers (3a, 3b) and/or the active layer (4) comprises an indium-containing phosphide compound semiconductor material and the phosphide compound semiconductor material contains at least one of the elements Sb or Bi as additional element of the V. main group. Furthermore, an optoelectronic semiconductor component with an active layer (4) suitable for emission of radiation is disclosed, wherein the active layer comprises an indium-containing nitride compound semiconductor material and the nitride compound semiconductor material of the active layer (4) contains at least one of the elements As, Sb or Bi as additional element of the V. main group.
Abstract:
The invention describes an optoelectronic semiconductor chip (1) having a semiconductor layer sequence (2) which has an active zone (4) for generating electromagnetic radiation, and having a patterned current spreading layer (6) which contains a transparent conductive oxide and is arranged on a main surface (12) of the semiconductor layer sequence (2), wherein the current spreading layer (6) covers at least 30% and at most 60% of the main surface (12).
Abstract:
The invention relates to an LED chip (1) comprising a semiconductor layer sequence (2) which is electrically contacted by contacts (5) via a current spreading layer (3). The contacts (5) cover approximately 1% to 8% of the area of the semiconductor layer sequence (2). The contacts (5) e.g. consist of separate contact points (51) which are arranged on the grid points of a regular grid (52) having a grid constant of 12 μm. The current spreading layer (3) contains e.g. indium tin oxide, indium zinc oxide or zinc oxide and has a thickness in the range of 15 nm to 60 nm.
Abstract:
The invention relates to an opto-electronic semiconductor chip. The semiconductor chip has a semiconductor layer sequence (2) with an active layer (23) provided between a layer of a first conductivity type (21) and a layer of a second conductivity type (22) for generating radiation. The layer of the first conductivity type (21) is adjacent to a front side (110) of the semiconductor layer sequence (2). The semiconductor layer sequence (2) comprises at least one recess (3) that extends from a rear side (120) located across a front side (110) of the semiconductor layer sequence (2) through the active layer (23) to the layer of the first conductivity type (21). The layer of the first conductivity type (21) is electrically connected through the recess (3) by means of a first electrical connection layer (5) which covers at least some sections of the rear side (120) of the semiconductor layer sequence (2). The semiconductor chip contains in the region of the recess (3) a transition layer (20) which is composed of material of the layer of the first conductivity type (21) and material of the first electrical connection layer (5). The invention further relates to a method for producing such a semiconductor chip.
Abstract:
The invention relates to a semiconductor chip (1) having a semiconductor body (2) comprising a semiconductor layer sequence having an active region (25) designed to generate radiation. A mirror structure (3) is located on the semiconductor body (2), said mirror structure having a mirror layer (4) and a dielectric layer structure (5) located at least in areas between the mirror layer and the semiconductor body. A method for producing a semiconductor chip is also disclosed.