A dibenzoheterocyclic compound wherein band gaps of HOMO and LUMO energy levels of the dibenzoheterocyclic compound are wide, light can be emitted in a deep blue light-emitting region; and the LUMO energy level of the dibenzoheterocyclic compound is low, so the LUMO energy level matches with an electron transport layer for electrons injection and transport. The dibenzoheterocyclic compound has hole transport performance, so as a light-emitting layer material, the dibenzoheterocyclic compound balances the ratio of electrons to holes in a light-emitting layer increasing the combination probability and improving the device light-emitting efficiency. The spatial configuration of the dibenzoheterocyclic compound avoids material stacking molecules, reduces annihilation of excitons, and inhibits efficiency roll-off. The dibenzoheterocyclic compound has thermal stability, so deep blue light can be emitted efficiently and stably. With an organic light-emitting diode and a deep blue light-emitting device with high light-emitting efficiency, low working voltage can be obtained.
一种二苯并
杂环化合物,其中二苯并
杂环化合物的HOMO和LUMO能级的带隙较宽,可以在深蓝光发射区域发射光线;二苯并
杂环化合物的LUMO能级较低,因此与电子传输层的LUMO能级相匹配,用于电子注入和传输。二苯并
杂环化合物具有空穴传输性能,因此作为发光层材料,二苯并
杂环化合物平衡了发光层中电子与空穴的比例,增加了组合概率并提高了器件的发光效率。二苯并
杂环化合物的空间结构避免了材料的堆叠分子,减少了激子的湮灭,并抑制了效率的衰减。二苯并
杂环化合物具有热稳定性,因此可以高效稳定地发射深蓝光。通过有机发光二极管和具有高发光效率的深蓝光发射器件,可以获得低工作电压。