LIGHT-EMITTING DEVICE AND LIGHTING SYSTEM COMPRISING SAME
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Feb 12, 2016
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Feb 16, 2015
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Embodiments relate to a light emitting device, a light emitting device package, and a lighting system comprising the same. The light emitting device according to embodiments may comprise: a first conductivity-type semiconductor layer; an active layer on the first conductivity-type semiconductor layer; an electron blocking layer on the active layer; and a second conductivity-type semiconductor layer on the electron blocking layer. The electron blocking layer may comprise an InxAlyGa1-x-yN based superlattice layer (wherein 0≦x≦1, 0≦y≦1).
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