Abstract:
A radiation detector is disclosed, for the detection of radiation (8), with a given spectral sensitivity distribution (9), which has a maximum at a given wavelength λo, comprising a semiconductor body (1) with an active region (5), provided for detector signal generation and for the incident radiation. In one embodiment, the active region (5) comprises a number of functional layers (4a, 4b, 4c, 4d), with differing band gaps and/or thicknesses and embodied such that said layers (4a, 4b, 4c, 4d) at least partly absorb radiation at a wavelength greater than λo. In a further embodiment, a filter layer structure (70) is arranged after the active region, comprising at least one filter layer (7, 7a, 7b, 7c). The filter layer structure determines the short wave side (101) of the detector sensitivity (10), according to the given spectral sensitivity distribution (9), by means of absorption of wavelengths less than λo. A radiation detector for the detection of radiation (8), according to the spectral sensitivity distribution (9) of the human eye is also disclosed. The semiconductor body can be monolithically integrated.
Abstract:
The invention relates to a radiation emitting semi-conductor element with a semi-conductor body, comprising a first main surface (5), a second main surface (9) and a semi-conductor layer sequence (4) with an active zone (7) generating electromagnetic radiation. The semi-conductor layer sequence (4) is arranged between the first and the second main surface (5,9), a first current expansion layer (3) is arranged on the first main surface (5) and is joined in an electrically conducting manner to the semi-conductor layer sequence (4) and a second current expansion layer (10) is arranged on the second main surface (9) and is joined in an electrically conducting manner to the semi-conductor layer sequence (4).
Abstract:
In at least one embodiment of the method for producing a radiation-emitting thin-film component (1), said method comprises the following steps: - providing a substrate (2), - applying nanorods (3) to the substrate (2) by epitaxial growth, - epitaxially growing a semiconductor layer sequence (4) comprising at least one active layer (5) onto the nanorods (3), - applying a carrier (6) onto the semiconductor layer sequence (4), and – separating the semiconductor sequence (4) and carrier (6) from the substrate (2) by at least partially destroying the nanorods (3). By using such a production method, mechanical stresses and cracks in the semiconductor layer sequence (4) resulting from the epitaxial growth can be reduced.
Abstract:
The invention relates to an LED semiconductor body (1) comprising at least one first radiation-generating active layer (31), at least one second radiation-generating active layer (32), and a photonic crystal (6). The invention also relates to the use of such an LED semiconductor body (1).
Abstract:
A description is given of an LED semiconductor body comprising a first radiation-generating active layer and a second radiation-generating active layer, wherein the first and second active layer are arranged one above another in a vertical direction.