To provide a light emitting device excellent in light emission efficiency.
A light emitting device having an anode, a cathode, a first organic layer and a second organic layer disposed between the anode and the cathode, wherein the first organic layer is a layer containing a compound represented by the formula (T) and a fluorescent compound represented by the formula (B) and the second organic layer is a layer containing a crosslinked body of a crosslink material:
[wherein, nT1 represents an integer of 0 to 5. nT2 represents an integer of 1 to 10. ArT1 represents a single-ring or condensed-ring monovalent hetero ring group containing a nitrogen atom having no double bond as a ring constituent atom and not containing a nitrogen atom having a double bond as a ring constituent atom. LT1 represents an alkylene group, an arylene group or the like. ArT2 represents a single-ring or condensed-ring hetero ring group containing a nitrogen atom having a double bond as a ring constituent atom.]
Ar1B(̵R1B)n1B (B) [wherein, n1B represents an integer of 0 to 15. Ar1B represents a condensed-ring aromatic hydrocarbon group. R1B represents an aryl group, a monovalent hetero ring group, a substituted amino group or the like.].
提供一种发光效率极佳的发光器件。
一种发光器件,具有阳极、阴极、设置在阳极和阴极之间的第一有机层和第二有机层,其中第一有机层是含有式(T)表示的化合物和式(B)表示的荧光化合物的层,第二有机层是含有交联材料的交联体的层:
[其中,nT1 代表 0 至 5 的整数,nT2 代表 1 至 10 的整数。ArT1 代表单环或缩合环单价杂环基团,该基团含有作为环组成原子的不含双键的氮原子,且不含有作为环组成原子的含双键的氮原子。LT1 代表亚烷基、芳烯基或类似基团。ArT2 代表单环或缩合环杂环基团,其中含有一个以双键作为环组成原子的氮原子]。
Ar1B(̵R1B)n1B (B) [其中,n1B 代表 0 至 15 的整数。Ar1B 代表缩合环
芳香烃基团。R1B 代表芳基、一价杂环基、取代的
氨基或类似基团]。