Patent ID: 9698295
Date: 2017-07-04
CPC Classifications: H01L

Claim:
1. An optoelectronic device, comprising: a body of semiconductor material including a first well region of a first conductivity type and a second well region of a second conductivity type opposite the first conductivity type, wherein the second well region is surrounded laterally and on a bottom thereof by the first well region, and wherein the first well region is surrounded laterally and on a bottom thereof by the body, the first and second well regions forming a photodiode; a recess passing completely through the second well region and said recess further passing only partially through the first well region; wherein said recess is laterally surrounded on all sides by the first and second well regions and is defined by a sidewall forming an angle with the main surface that is greater than ninety degrees; and wherein said recess is configured to receive electromagnetic radiation, said sidewall intersecting a depletion region of the photodiode at an interface between the first and second well regions such that the received electromagnetic radiation is coupled from the recess to said photodiode at the intersected depletion region.