Patent ID: 9029833
Filing Date: 2015-05-12
Classification: H01L

Abstract:
1. A detector apparatus, comprising: a semiconductor structure with a first surface; a graphene layer disposed over at least a portion of the first surface of the semiconductor structure and having an upper surface with a first portion configured to collect photogenerated carriers generated within the semiconductor structure and to establish a potential on the first surface of the semiconductor structure; a first contact structure electrically connected to the semiconductor structure; and a second contact structure electrically connected to a second portion of the upper surface of the graphene layer; wherein the first and second contact structures are formed on a top side of the apparatus; and wherein the semiconductor structure is of a first conductivity type and comprises an implanted or epitaxially grown region having a dopant concentration of the first conductivity type greater than a dopant concentration of the remainder of the semiconductor structure, wherein the first contact structure is an ohmic metal contact formed over at least a portion of an upper surface of the implanted or epitaxially grown region of the semiconductor structure.