Title:
LIGHT DETECTOR AND ELECTRONIC INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2021/215066
Kind Code:
A1
Abstract:
In the present invention, sensitivity to near-infrared light is improved and the deterioration of timing jitter characteristics is suppressed. An optical detector comprises a pixel region in which pixels having a photoelectric conversion unit are multiply arranged in a matrix, each photoelectric conversion unit comprising: a first semiconductor unit partitioned by separation parts; a second semiconductor unit provided closer to a first surface, between the first surface and a second surface positioned on mutually opposite sides of the first semiconductor unit, the second semiconductor unit including germanium; a light absorption unit provided to the second semiconductor unit, the light absorption unit absorbing light incident on the second semiconductor unit and generating a carrier; and a multiplier unit provided to the first semiconductor unit, the multiplier unit performing avalanche multiplication of the carrier generated by the light absorption unit.
Inventors:
OTAKE YUSUKE (JP)
WAKANO TOSHIFUMI (JP)
WAKANO TOSHIFUMI (JP)
Application Number:
PCT/JP2021/003353
Publication Date:
October 28, 2021
Filing Date:
January 29, 2021
Export Citation:
Assignee:
SONY SEMICONDUCTOR SOLUTIONS CORP (JP)
International Classes:
H01L27/146; G01C3/08; H01L21/3205; H01L21/768; H01L23/522; H01L27/144; H01L31/107
Domestic Patent References:
| WO2020053564A1 | 2020-03-19 |
Foreign References:
| US20080017883A1 | 2008-01-24 | |||
| US20130292741A1 | 2013-11-07 | |||
| JP2010226073A | 2010-10-07 | |||
| US20160218236A1 | 2016-07-28 | |||
| JP2011155248A | 2011-08-11 | |||
| JP2018088488A | 2018-06-07 |
Attorney, Agent or Firm:
TANAKA Hidetetsu et al. (JP)
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