| 摘要 |
An organic EL device includes an anode, a cathode having optical transparency, and an organic EL layer disposed between the anode and the cathode and including at least a fluorescent layer. The cathode has a metal layer including a first metal and a low work function metal, and a conductive oxide layer arranged in this order from the organic EL layer side, and the work function of the low work function metal is smaller than the work function of the first metal. The metal layer has a first surface on the organic EL layer side and a second surface on the conductive oxide layer side, and the concentration of the low work function metal at the first surface is greater than the concentration of the low work function metal at the second surface.
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