ORGANIC LIGHT-EMITTING DEVICE INCLUDING FLUORESCENT COMPOUND AND FLUORESCENT COMPOUND
申请人:Samsung Electronics Co., Ltd.
公开号:US20190074445A1
公开(公告)日:2019-03-07
An organic light-emitting device comprising: a first electrode; a second electrode facing the first electrode; and an organic layer disposed between the first electrode and the second electrode, wherein the organic layer comprises an emission layer and a fluorescent compound, wherein the fluorescent compound comprises a
3
n-π*-to-
1
π-π* energy transition from a
3
n-π* excited state to a
1
π-π* excited state, an energy level in a
1
n-π* excited state of the fluorescent compound is greater than an energy level in the
1
π-π* excited state of the fluorescent compound, the fluorescent compound emits a fluorescent light by radiative energy transition of an exciton in the
1
π-π* excited state to a ground state, and the energy level in the
1
n-π* excited state, the energy level in the
1
π-π* excited state, and the energy level in the
3
n-π* excited state are each independently calculated by using a time dependent-Density Functional Theory method.
一种有机发光器件,包括:第一电极;面向第一电极的第二电极;以及设置在第一电极和第二电极之间的有机层,其中,有机层包括一个发射层和一个荧光化合物,荧光化合物包括从a3n-π*激发态到a1π-π*激发态的a3n-π*-to-1π-π*能量跃迁,荧光化合物在a1n-π*激发态的能级高于荧光化合物在1π-π*激发态的能级,荧光化合物通过1π-π*激发态中的激子的辐射能量跃迁到基态发射荧光,且1n-π*激发态的能级、1π-π*激发态的能级和3n-π*激发态的能级分别通过使用时间依赖密度泛函理论方法独立计算。