Patent ID: 11973093
Assignee: SEMIKING LLC
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A single photon avalanche detector (SPAD) device configured to detect visible to infrared light, the device comprising:
a substrate;
a trench coupled to the substrate, having a lattice mismatch with the substrate, and having a height equal to or greater than its width; and
a substantially defect-free semiconductor region comprising photosensitive material, the semiconductor region comprising:
a well coupled to the trench and doped a first type, the well configured to detect a photon and generate a current; and
a region formed in the well and doped a second type opposite to the first type,
wherein the well is configured to cause an avalanche multiplication of the current, and
wherein the trench and the well form a first electrode and the region forms a second electrode.