Patent ID: 11869905
Assignee: LYNRED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. Detection device comprising:
an absorbent first stack configured to absorb an electromagnetic radiation in at least a first wavelength range and presenting a first thermal expansion coefficient, the absorbent first stack comprising a layer made from absorbent material, the absorbent material being a II-VI material or a III-V material,
a second stack forming an optical function and presenting a second thermal expansion coefficient, the first thermal expansion coefficient being different from the second thermal expansion coefficient, and
a buffer layer separating the absorbent first stack and second stack so as to separate the absorbent first stack from a set of mechanical stresses introduced by the second stack, the buffer layer presenting a thickness comprised between 0.5 μm and 50 μm,
wherein the buffer layer is formed by a semiconductor material that is lattice matched with the first stack or wherein the difference of lattice parameter between the buffer layer and absorbent first stack is less than 1%.