Abstract:
The invention relates to a method for forming at least one metal contact on a surface of a semiconductor and a device with at least one metal contact.The method is used for forming at least one metal contact (60) on a surface (11) of a semiconductor (10) and comprises the steps of: applying a metal layer (20) onto the semiconductor surface (11), applying a mask (40, 50) onto the metal layer (20), and structuring at least the metal layer (20) using the mask (40, 50), wherein lateral deposits (21) of the metal are produced on the mask by the structuring so that the mask is embedded between the deposits (21) and the structured metal layer (20′) after the structuring. The method is characterized by a conductive hard mask.Since the mask is conductive, it can remain embedded in the metal. It is not necessary to remove the deposits. The deposits and the mask form a part of the contact.
Abstract:
The present invention relates to an encapsulant for ultraviolet light emitting diodes. It is an object of the present invention to provide an encapsulant for UV LEDs emitting below 350 nm resulting in an increased extraction efficiency of the LED. According to the invention, a light emitting diode is disclosed comprising a radiation zone (12) which is electrically connected to a first contact (14) and to a second contact (16), and an encapsulant (18) encapsulating at least part of the radiation zone (12), the first contact (14) and the second contact (16), wherein the encapsulant (18) comprises polydimethylsiloxane.