Patent ID: 6759689
Filing Date: 2004-07-06
Classification: H01L

Abstract:
A light emitting element comprising a conductive substrate, a metal layer, a light emitting layer section and a first electrode, wherein the metal layer, the light emitting layer section and the first electrode are formed in the order on the first main surface side of the conductive substrate and a current can be applied to the light emitting layer section through the first electrode and the conductive substrate;wherein the conductive substrate is a silicon single crystal substrate and a second electrode is formed on a second main surface side of the silicon single crystal substrate; wherein the metal layer is formed in direct contact with the silicon single crystal substrate; wherein the metal layer includes a first metal layer in contact with the silicon single crystal substrate and a second metal layer in contact with the light emitting layer section; and wherein the metal layer further includes an intermediate metal layer in contact with the first metal layer between the first metal layer and the second metal layer, and the first metal layer is made of a metal whose metal component as a main component as a main component is easier to be alloyed with silicon than a metal component as a main component of the intermediate metal layer.