| CPC H01L 27/14643 (2013.01) [G01S 7/4816 (2013.01); G01S 7/4863 (2013.01); G01S 7/4914 (2013.01); G01S 17/36 (2013.01); H01L 27/14609 (2013.01); H01L 27/14612 (2013.01); H01L 27/14629 (2013.01); H01L 27/14634 (2013.01); H01L 27/14681 (2013.01); H01L 29/161 (2013.01); H01L 31/1037 (2013.01); H01L 27/14627 (2013.01); H01L 27/1463 (2013.01); H01L 27/14636 (2013.01)] | 20 Claims |

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1. A photodetection device comprising:
a first substrate comprising:
one or more first capacitors; and
a photodetector pixel comprising:
an absorption region configured to receive light and generate photo-carriers, and
one or more readout terminals configured to collect a portion of the photo-carriers; and
a second substrate bonded to the first substrate, the second substrate comprising:
one or more second capacitors; and
pixel transistors configured to collect photo-carriers from the one or more readout terminals, wherein the pixel transistors comprise:
one or more readout transistors electrically coupled to the one or more readout terminals of the first substrate,
wherein the one or more readout transistors are electrically coupled to the one or more first capacitors of the first substrate and the one or more second capacitors of the second substrate.
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