Patent ID: 6335255
Filing Date: 2002-01-01
Classification: H01L,H01S

Abstract:
A method of manufacturing a transistor and a laser on the same substrate having a surface, comprising the steps of:building a sequence of layers over the surface of the substrate, each of the layers having a consistent composition taken horizontally, and selecting the layers in the sequence of layers to be semiconductors and to have such an order and such compositions and such dopings, that the following further steps can be performed: confining laterally a first area at the surface of the substrate so that confined layers in the first area form a vertical transistor structure, making a substance diffuse into upper layers in a second area of the sequence of layers to change doping types in the upper layers in the second area, the second area being laterally separate and distinct from the first area, and confining laterally the second area so that confined layers in the second area form a laser structure.