A novel derivative of heterocyclic compound having nitrogen atom with a structure made by bonding special groups to benzimidazole, a material for an organic electroluminescence (EL) device comprising the derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising at least one organic compound layer containing a light emitting layer sandwiched between a pair of electrodes, wherein the device contains the derivative of heterocyclic compound having nitrogen atom. An organic EL device achieving elevation of luminance and of efficiency in light emission even under low driving voltage is obtainable by an employment of the derivative of heterocyclic compound having nitrogen atom for at least one layer composing organic compound layers of the EL device.
一种新型含氮原子的
杂环化合物衍
生物,其结构是通过在
苯并咪唑上键合特殊基团而形成的;一种有机电致发光(EL)装置材料,其中包含含氮原子的
杂环化合物衍
生物;以及一种有机电致发光装置,其中至少包含一层有机化合物层,该层包含夹在一对电极之间的发光层,该装置包含含氮原子的
杂环化合物衍
生物。通过在构成电致发光器件有机化合物层的至少一层中使用具有氮原子的
杂环化合物衍
生物,可以获得一种有机电致发光器件,即使在低驱动电压下也能提高亮度和发光效率。