p-type P-TYPE SEMICONDUCTOR LAYER STRUCTURE AND UV LIGHT-EMITTING DEVICE INCLUDING THE SAME

摘要

A p-type semiconductor layer structure includes a p-type semiconductor layer, an electrode structure including metal patterns which are formed on the p-type semiconductor layer and cross each other and ohmic contact patterns which are interposed between the metal patterns and the p-type semiconductor layer along the metal patterns and form ohmic contacts with the metal patterns, and a light reflecting structure formed to cover the electrode structure, thereby improving an ohmic contact characteristic and light extraction efficiency.