公开(公告)号：US20180138327A1

公开(公告)日：2018-05-17

申请号：US15868929

申请日：2018-01-11

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Massimo Cataldo MAZZILLO ,  Piero FALLICA ,  Salvatore LOMBARDO

IPC: H01L31/0216 ,  H01L31/107 ,  H01L31/02 ,  G01J1/44 ,  H01L27/144

CPC classification number: H01L31/02164 ,  G01J1/44 ,  G01J2001/4466 ,  H01L27/1446 ,  H01L27/1462 ,  H01L27/14625 ,  H01L27/1463 ,  H01L27/14649 ,  H01L31/02027 ,  H01L31/107

Abstract: An array of Geiger-mode avalanche photodiodes is formed in a die and includes: an internal dielectric structure, arranged on the die; and an external dielectric region arranged on the internal dielectric structure. The external dielectric region is formed by an external material that absorbs radiation having a wavelength that falls in a stop-band with low wavelength and transmits radiation having a wavelength that falls in a pass-band with high wavelength, at least part of the pass-band including wavelengths in the infrared. The internal dielectric structure is formed by one or more internal materials that substantially transmit radiation having a wavelength that falls in the stop-band and in the pass-band and have refractive indices that fall in an interval having an amplitude of 0.4. In the stop-band and in the pass-band the external dielectric region has a refractive index with the real part that falls in the above interval.

公开(公告)号：US20190148568A1

公开(公告)日：2019-05-16

申请号：US16228483

申请日：2018-12-20

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Massimo Cataldo MAZZILLO ,  Piero FALLICA ,  Salvatore LOMBARDO

IPC: H01L31/0216 ,  H01L27/146 ,  H01L31/107 ,  H01L27/144 ,  G01J1/44 ,  H01L31/02

CPC classification number: H01L31/02164 ,  G01J1/44 ,  G01J2001/4466 ,  H01L27/1446 ,  H01L27/1462 ,  H01L27/14625 ,  H01L27/1463 ,  H01L27/14649 ,  H01L31/02027 ,  H01L31/107

Abstract: An array of Geiger-mode avalanche photodiodes is formed in a die and includes: an internal dielectric structure, arranged on the die; and an external dielectric region arranged on the internal dielectric structure. The external dielectric region is formed by an external material that absorbs radiation having a wavelength that falls in a stop-band with low wavelength and transmits radiation having a wavelength that falls in a pass-band with high wavelength, at least part of the pass-band including wavelengths in the infrared. The internal dielectric structure is formed by one or more internal materials that substantially transmit radiation having a wavelength that falls in the stop-band and in the pass-band and have refractive indices that fall in an interval having an amplitude of 0.4. In the stop-band and in the pass-band the external dielectric region has a refractive index with the real part that falls in the above interval.