Patent ID: 11929446
Assignee: CHANGCHUN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A preparation method of a detector material, comprising the following steps:
(1) growing a gallium compound on a surface of an initial substrate to obtain a buffer layer, wherein the initial substrate is a gallium arsenide substrate; and the gallium compound is gallium arsenide or gallium antimonide;
(2) depositing silicon dioxide on a surface of the buffer layer to obtain a silicon dioxide film;
(3) conducting photolithography and etching on the silicon dioxide film sequentially to obtain a strip growth layer, wherein widths of strip growth regions of the strip growth layer change continuously; and
(4) growing a quantum well or superlattice on the strip growth layer to obtain the detector material, wherein the quantum well is an InxGaAs/GaAs quantum well, and the superlattice is an InAs/GaSb superlattice.