ORGANIC LIGHT-EMITTING DEVICE, DISPLAY DEVICE, ELECTRONIC APPARATUS, ON-VEHICLE DISPLAY AND VEHICLE

To provide an organic light-emitting device of which the lifetime under a high-temperature environment is prolonged, a display device, an electronic apparatus, an on-vehicle display and a vehicle.SOLUTION: An organic light-emitting device comprises: an anode electrode and a cathode electrode which are disposed oppositely; a light-emitting layer disposed between the anode electrode and the cathode electrode; and a hole transporting layer which is disposed between the anode electrode and the light-emitting layer in contact with the light-emitting layer. The light-emitting layer contains a first host material and a second host material. An energy difference ΔE1 between a HOMO level 14aH of the first host material and a HOMO level 13H of the hole transporting layer is smaller than an energy difference ΔE2 between a HOMO level 14bH of the second host material and the HOMO level 13H of the hole transporting layer, and a difference between the HOMO level 13H of the hole transporting layer and the HOMO level 14aH of the first host material is equal to or less than 0.37 eV.SELECTED DRAWING: Figure 2 【課題】高温環境下における寿命が長い有機発光装置、表示装置、電子機器、車載ディスプレイ及び車両を提供する。【解決手段】有機発光装置は、対向配置されるアノード電極及びカソード電極と、アノード電極とカソード電極との間に配置される発光層と、アノード電極と発光層との間に、発光層に接して配置される正孔輸送層と、を備え、発光層は、第１のホスト材料と、第２のホスト材料とを含み、第１のホスト材料のＨＯＭＯ準位１４ａＨと正孔輸送層のＨＯＭＯ準位１３Ｈとのエネルギー差ΔＥ１は、第２のホスト材料のＨＯＭＯ準位１４ｂＨと正孔輸送層のＨＯＭＯ準位１３Ｈとのエネルギー差ΔＥ２より小さく、正孔輸送層のＨＯＭＯ準位１３Ｈと第１のホスト材料のＨＯＭＯ準位１４ａＨとの差が０．３７ｅＶ以下である。【選択図】図２