Patent ID: 7238972
Filing Date: 2007-07-03
Classification: B82Y,H01L,Y02E

Abstract:
1. A photodetector, comprising: a substrate; an n-type III-V compound semiconductor layer located on the substrate; an undoped III-V compound semiconductor layer located on a first portion of the n-type III-V compound semiconductor layer, and a second portion of the n-type III-V compound semiconductor layer is exposed; a p-type III-V compound semiconductor layer located on the undoped III-V compound semiconductor layer; a strained layer superlattice structure located on the p-type III-V compound semiconductor layer; a transparent conductive layer located on the strained layer superlattice structure; a p-type electrode located on a portion of the transparent conductive layer; and an n-type electrode located on a portion of the second portion of the n-type III-V compound semiconductor layer.