Abstract:
A conversion LED for producing white has a luminophore mixture comprising a first luminophore of the LuAGaG type and a second luminophore of the nitridosilicate type, allowing very high efficiency.
Abstract:
The invention relates to an LED semiconductor element comprising at least one first radiation-generating active layer and at least one second radiation-generating active layer which is stacked on top of the first active layer in a vertical direction and is serially connected to the first active layer. The first active layer and the second active layer are connected in an electrically conducting manner by means of a contact zone. The invention further relates to different uses of said LED semiconductor element.
Abstract:
The invention relates to an LED semiconductor body (1) comprising at least two radiation-generating active layers (2, 3) which each have a forward voltage (ULED). The number of active layers is adapted to an operating voltage (UB) in such a way that the maximum voltage (UW) falling on a series resistor (10) mounted in series in relation to the active layers (2, 3) is no higher than a voltage (UH) falling on the LED semiconductor body (1). The invention also relates to different uses of the LED semiconductor body.
Abstract:
Disclosed is an optoelectronic semiconductor chip (1) comprising a semiconductor member (2) that has a succession of semiconductor layers with an active area (3) which is suitable for generating radiation. The semiconductor chip further comprises: - a radiation-permeable and electrically conductive contact layer (6) that is arranged on the semiconductor member (2), is connected in an electrically conducting manner to the active area (3), and adjoins a structured connecting layer (4) which is applied to the semiconductor member (2); and - an electrode (14) that has a connecting area (140) and is disposed on the semiconductor member (2) on the side of the active region (3) which faces away from the barrier layer (5). The entire surface of the contact layer (6) adjoins the barrier layer (5) in an area of the barrier layer (5) which is covered by the connecting area (140) of the electrode (14).
Abstract:
The invention relates to a method for roughening a surface of a body (1), comprising the following steps: coating the surface with a mask layer (2); applying pre-shaped mask bodies (3) to the mask layer (2); etching though the mask layer at locations that are not covered by mask bodies (3), and; etching the body (1) at locations of its surface that are not covered by the mask layer (2). The invention also relates to an optoelectronic component. By using the mask layer (2) as an additional auxiliary mask, methods having a low selectivity with regard to polystyrene balls can be used for etching.