Organic light emitting element, display apparatus, image pickup apparatus, and illumination apparatus
申请人:CANON KABUSHIKI KAISHA
公开号:US10840470B2
公开(公告)日:2020-11-17
One embodiment of this invention has a first electrode, a first light emitting layer, and a second electrode, in which the first light emitting layer has a first host material and a first dopant material, a lowest triplet excitation energy of the first host material is higher than a lowest triplet excitation energy of the first dopant material, and, when a weight of the first light emitting layer is set to 100 wt %, a concentration of the first dopant material is 0.3 wt % or less.
本发明的一个实施例具有第一电极、第一发光层和第二电极,其中第一发光层具有第一宿主材料和第一掺杂剂材料,第一宿主材料的最低三重激发能高于第一掺杂剂材料的最低三重激发能,并且当第一发光层的重量设置为 100 wt % 时,第一掺杂剂材料的浓度为 0.3 wt % 或更低。