| 摘要 |
PURPOSE: An ultraviolet ray light emitting device is provided to prevent the generation of voids or grains by forming first and second layers of a first buffer layer between a substrate and a second buffer layer. CONSTITUTION: A first buffer layer (20) is formed on a substrate (11). A second buffer layer (13) is formed on the first buffer layer. An ultraviolet light emitting structure is formed on the second buffer layer. The first buffer layer includes first and second layers. The first and second layers are formed between the substrate and the second buffer layer.
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