| 摘要 |
An organic EL device for stably emitting light including red, green, and blue light components of good balance suitable for full-color display at high efficiency for a long time. The organic EL device (1) comprises an anode (3), a cathode (5), and an organic layer (4) interposed between the anode and cathode (3, 5) and composed of a light-emitting layer, which comprises, from the anode (3) side, a red light-emitting layer (11), a green light-emitting layer (12), and a blue light-emitting layer (13) sequentially formed. The red light- emitting layer (11) contains a hole-transporting light-emitting material and has a hole transporting ability. The green light-emitting layer has a both-carrier transporting ability. The blue light-emitting layer has an electron-transporting ability and is composed of, from the anode (3) side, a both-carrier transporting blue light-emitting layer and an electron- transporting blue light-emitting layer sequentially formed.
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