| 摘要 |
A nitride semiconductor light emitting device includes a nitride semiconductor multilayer film. The nitride semiconductor multilayer film is formed on a substrate and made of nitride semiconductor crystals, and includes a light emitting layer. In the nitride semiconductor multilayer film, facets of a cavity are formed, and a protective film made of aluminum nitride crystals is formed on at least one of the facets. The protective film has a crystal plane whose crystal axes form an angle of 90 degrees with crystal axes of a crystal plane of the nitride semiconductor crystals constituting the facet of the cavity having the protective film formed thereon.
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