| 摘要 |
An inorganic electroluminescent device is provided, the inorganic electroluminescent device including: a multilayer structure containing at least one pair of electrodes, and a light-emitting layer provided between the electrodes, the light-emitting layer contains at least one matrix material, at least one element forming a luminescent center, and Cu, wherein the matrix material is selected from the group consisting of II Group-XVI Group compounds, XII Group-XVI Group compounds, and mixed crystals thereof, and the light-emitting layer constitutes an inorganic phosphor layer having a composition gradient that Cu concentration in the host material varies by a factor of at least 10 in a thickness direction of the light-emitting layer.
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