P-contact and light-emitting diode for the ultraviolet spectral range

摘要

The present invention relates to a p-doped contact for use in a light-emitting diode for the ultraviolet spectral range, comprising a p-contact layer having a first surface for contacting a radiation zone and a second surface comprising, on the side facing away from the first surface: a) a coating, which directly contacts 5%-99.99% of the second surface of the p-contact layer and contains or consists of a material having a maximum reflectivity of at least 60% for light with a wavelength of 200 nm to 400 nm; b) a plurality of p-injectors, which are disposed directly on the second surface of the p-contact layer.

主权项

1. A p-doped contact for use in a light-emitting diode for the ultraviolet spectral range, the p-doped contact comprising:
a p-contact layer comprising AlGaN and having a first surface for contacting a radiation zone, and a second surface opposite the first surface; a coating covering 75%-96% of the second surface of the p-contact layer, the coating comprising a material having a maximum reflectivity of at least 60% for light in a UV range with a wavelength of 200 nm to 400 nm; and a plurality of p-injectors arranged on the second surface of the p-contact layer, the p-injectors comprising a p-injector metal layer and at least one other p-injector layer in direct contact with the p-injector metal layer, the at least one other p-injector layer comprising p-GaN or p-(In)GaN.