Patent ID: 6740904
Filing Date: 2004-05-25
Classification: H01L

Abstract:
A silicon light-emitting device comprising:an n- or p-type substrate based on silicon; a doped region ultra-shallowly doped with the opposite type dopant to the type of the substrate disposed on a first side of the substrate; a plurality of semiconductor material portions at least partially forming a stack along with the doped region disposed on a second side of the substrate opposite to the first side; a first electrode electrically connected to the doped region; a second electrode electrically connected to a first semiconductor material portion, where a semiconductor material portion located at an outermost portion of the stack is the first semiconductor material portion, and a semiconductor material portion adjacent to the inner side of the first semiconductor material portion is a second semiconductor material portion; and a third electrode electrically connected to the second semiconductor material portion, wherein a semiconductor material portion adjacent to the substrate is formed in the opposite type to the type of the substrate, and adjacent semiconductor material portions are formed in opposite types, so that a transistor having at least two steps is formed.