Patent ID: 6566724
Filing Date: 2003-05-20
Classification: H01L,Y02B,Y02E

Abstract:
A photodiode comprising:a p-layer; a n-layer; an absorption layer disposed between said p-layer and said n-layer, said absorption layer characterized by an absorption layer band-gap; and a barrier layer disposed between said p-layer and said n-layer, said barrier layer characterized by a barrier layer band-gap wider than the absorption layer band gap, wherein said absorption layer is disposed adjacent to said n-layer, said absorption layer material is doped nâˆ’, and said barrier layer comprises: a nâˆ’ barrier sublayer which is disposed between said p-layer and said absorption layer and adjacent to said absorption layer; and a p+ barrier sublayer which is disposed between and adjacent to said Nâˆ’ barrier sublayer and said P-layer.