Patent ID: 11955518
Assignee: XIAMEN SANAN INTEGRATED CIRCUIT CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An epitaxial structure, comprising:
a composite base unit including
a first base layer made of a material InxGa(1-x)As(1-y)Ny, wherein 0<x≤0.2, and 0≤y≤0.035, and when y is not 0, x=3y, and
a second base layer formed on said first base layer, and made of a material of InmGa(1-m)As, wherein 0.03≤m≤0.2; and

an emitter unit formed on said second base layer opposite to said first base layer, and made of an gallium indium phosphide (GaInP)-based material.