Highly Efficient Electron-Transporting/Injecting and Thermally Stable Naphthyridines for Organic Electrophosphorescent Devices
作者:Lixin Xiao、Xing Xing、Zhijian Chen、Bo Qu、Hsinglin Lan、Qihuang Gong、Junji Kido
DOI:10.1002/adfm.201202194
日期:2013.3.13
8‐naphthyridine derivatives is synthesized and their electron‐transporting/injecting (ET/EI) properties are investigated via a multilayered electrophosphorescent organic light‐emitting device (OLED) using fac‐tris(2‐phenylpyridine)iridium [Ir(ppy)3] as a green phosphorescent emitter doped into a 4,4′‐N,N′‐dicarbazolebiphenyl (CBP) host with 4,4′‐bis[N‐(1‐naphthyl)‐N‐phenylamino]biphenyl (a‐NPD) as the hole‐transporting
合成了一系列1,8-萘啶衍生物,并使用fac -tris(2-苯基吡啶)铱[Ir]通过多层电致磷光有机发光器件(OLED)研究了它们的电子传输/注入(ET / EI)性质(ppy)3 ]作为绿色磷光发射体掺入4,4'-双[ N-(1-萘基)-N-苯基氨基]联苯(4,4'- N,N'-二咔唑联苯(CBP)主体中(一种-NPD)作为空穴传输层,而含有四苯基联苯胺(TPDPES)掺杂有三(4-溴苯基)六氯锑酸铵(TBPAH)的聚(亚芳基醚砜)作为空穴注入层。使用2,7-双[3-(2-苯基)-1,8-萘啶基] -9,9-二甲基芴(DNPF)时,设备的开启电压为2.5 V,低于3.0V。使用常规ET材料的设备。DNPF设备的最大电流效率(CE)和功率效率(PE)远远高于传统设备。借助浴铜嘌呤(BCP)的空穴阻挡(HB)和激子阻挡层,最大外部量子效率(EQE)的13.2–13.7%和最大PE为50.2–54