公开(公告)号：WO2022026638A2

公开(公告)日：2022-02-03

申请号：PCT/US2021/043596

申请日：2021-07-29

Applicant: APPLE INC.

Inventor： ARBORE, Mark Alan ,  MOREA, Matthew T. ,  KANGAS, Miikka M. ,  CHEVALLIER, Romain F. ,  SARMIENTO, Tomas

IPC: G01J1/02 ,  G01J1/04 ,  G01J1/42 ,  G01J3/02 ,  G01J3/42 ,  H01L27/146 ,  G01J1/0209 ,  G01J1/0271 ,  G01J1/0411 ,  G01J1/4228 ,  G01J2001/0257 ,  G01J3/0208 ,  G01J3/0259 ,  H01L27/1446 ,  H01L27/14601 ,  H01L27/14618 ,  H01L27/14625 ,  H01L27/14694 ,  H01L31/0203 ,  H01L31/02327 ,  H01L31/03046

Abstract: An electromagnetic radiation detector includes an InP substrate having a first surface opposite a second surface; a first InGaAs electromagnetic radiation absorber stacked on the first surface and configured to absorb a first set of electromagnetic radiation wavelengths; a set of one or more buffer layers stacked on the first InGaAs electromagnetic radiation absorber and configured to absorb at least some of the first set of electromagnetic radiation wavelengths; a second InGaAs electromagnetic radiation absorber stacked on the set of one or more buffer layers and configured to absorb a second set of electromagnetic radiation wavelengths; and an immersion condenser lens formed on the second surface and configured to direct electromagnetic radiation through the InP substrate and toward the first InGaAs electromagnetic radiation absorber and the second InGaAs electromagnetic radiation absorber.