A light-receiving device, a method for manufacturing the same, and an optoelectronic
integrated circuit including the same are provided. The light-receiving device
includes a substrate; an intrinsic region formed on the substrate; a first region
formed to a shallow depth in the intrinsic region; and a second region formed to
a deep depth in the intrinsic region and distanced from the first region, wherein
the first and second regions are doped with different conductivity types. The light-receiving
device can shorten the transit time of holes with slow mobility. Therefore, no
response delay occurs, and thus, a high response speed can be accomplished.