CPC H01L 27/14627 (2013.01) [H01L 27/14643 (2013.01); H01L 31/028 (2013.01); H01L 31/02327 (2013.01); H01L 31/1804 (2013.01)] | 19 Claims |
1. A light detecting structure comprising:
a) a silicon (Si) base having a pyramidal shape with a wide incoming light-facing pyramid bottom and a narrower truncated pyramid top; and
b) a germanium (Ge) photodiode formed on the narrower truncated pyramid top, wherein the Ge photodiode is operable to detect light in the short wavelength infrared (SWIR) range, wherein the Ge photodiode has a height smaller than a height of the Si base.
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