申请人:Idemitsu Kosan Co., Ltd.
公开号:EP2525425A1
公开(公告)日:2012-11-21
An organic electroluminescence device includes an anode, an emitting layer, an electron-transporting region, and a cathode, the anode, the emitting layer, the electron-transporting region, and the cathode being stacked in this order, the emitting layer including a host material, and a dopant material that emits fluorescence having a main peak wavelength of 550 nm or less, the electron-transporting region including a barrier layer that is adjacent to the emitting layer, and the barrier layer including a barrier material that includes an electron-transporting structural part, and a triplet barrier structural part that includes a fused polycyclic aromatic hydrocarbon compound, and satisfies the relationship "ETb>ETh" (where, ETh is the triplet energy of the host material, and ETb is the triplet energy of the barrier material).
一种有机电致发光器件包括阳极、发射层、电子传输区域和阴极,阳极、发射层、电子传输区域和阴极依次堆叠,发射层包括宿主材料和掺杂材料,掺杂材料发出的荧光的主峰波长在550纳米或以下、电子传输区域包括与发射层相邻的阻挡层,阻挡层包括阻挡材料,阻挡材料包括电子传输结构部分和三重阻挡结构部分,三重阻挡结构部分包括熔融多环芳烃化合物,并且满足 "ETb>ETh "关系(其中,ETh 是主材料的三重能,ETb 是阻挡材料的三重能)。