Patent ID: 7057256
Filing Date: 2006-06-06
Classification: H01L,Y02E,Y02P,Y10S

Abstract:
1. A photodetector, comprising: a silicon substrate having a surface layer doped with sulfur inclusions with an average concentration in a range of about 0.5 to about 5 atom percent so as to exhibit a diodic current-voltage characteristic, said surface layer being configured for exposure to external radiation, a plurality of electrical contacts disposed on selected portions of the substrate for applying a selected reverse bias voltage to said surface layer to facilitate generation of an electrical signal in response to exposure of the surface layer to radiation, wherein said surface layer is configured such that generation of said electrical signal in response to said radiation at said reverse bias voltage exhibits a responsivity greater than about 1 amperes/watts (A/W) for at least one wavelength in a range of about 250 nm to about 1050 nm.