Method for making the 'heat-spreader'a' graphene spacer in electronic power devices, in particular laser diodes

摘要

The object of the invention is a method of manufacturing a spacer - graphene heat-spreader, in electronic power devices, especially in laser diodes, characterised in that it comprises the steps of: a) deposition on the radiator of the said electronic power device, and especially, on the semiconductor laser cooler, a suspension consisting of graphene nanoplatelets in the amount of 3 wt.% to 20 wt.% in butylcarbitol acetate until a layer having a thickness of 20 µm to 200 µm, b) drying the obtained layer at room temperature in the air for a time of 10 to 20 minutes, c) drying the obtained layer in a tunnel dryer at a temperature of about 120°C for a time of 10 to 20 minutes.