Light-emitting element

A light-emitting device comprises a substrate; a semiconductor stacking layer comprising a first semiconductor layer on the substrate, an active layer on the first semiconductor layer, and a second semiconductor layer on the active layer; and an electrode structure on the second semiconductor layer, wherein the electrode structure comprises a bonding layer, a conductive layer, and a first barrierlayer between the bonding layer and the conductive layer, and the conductive layer has a higher standard oxidation potential than that of the bonding layer. 本发明公开种发光元件，包含：基板；半导体叠层包含第半导体层在基板上，主动层在第半导体层上，以及第二半导体层在主动层上；以及电极结构在第二半导体层上，其中电极结构包含打线层，传导层以及第阻障层位于打线层及传导层之间，其中，传导层的标准氧化电位高于打线层的标准氧化电位。