Stable, Glassy, and Versatile Binaphthalene Derivatives Capable of Efficient Hole Transport, Hosting, and Deep-Blue Light Emission
作者:Bin Wei、Ji-Zhong Liu、Yong Zhang、Jian-Hua Zhang、Hua-Nan Peng、He-Liang Fan、Yan-Bo He、Xi-Cun Gao
DOI:10.1002/adfm.201000299
日期:——
based on BN1 is longer than a similar device based on NPB. BNs are efficient and versatile OLED materials: they can be used as a hole‐transport layer (HTL), a host, and a deep‐blue‐light‐emitting material. This versatility may cut the cost of large‐scale material manufacture. More importantly, the deep‐blue electroluminescence (emission peak at 444 nm with CIE coordinates (0.16, 0.11), 3.23 cd A−1 at
有机发光二极管(OLED)在显示器和固态照明中具有巨大的潜在应用。稳定性,成本和蓝色发射是支配OLED未来的关键问题。报道了一系列的三种联萘(BN)衍生物的合成和光电学。BN 1-3是“无熔点”且高度稳定的材料,可形成非常好的无定形玻璃状薄膜。它们在高达485–545°C的温度下分解。在25 mA cm -2的恒定电流密度下,ITO / BN 3 / Al单层器件的寿命(> 80 h)比ITO / NPB / Al单层器件(8 h)长得多)。另外,基于BN 1的多层器件的寿命比基于NPB的类似设备更长。BN是高效且用途广泛的OLED材料:它们可用作空穴传输层(HTL),主体和深蓝色发光材料。这种多功能性可以降低大规模材料制造的成本。更重要的是,深蓝色电致发光(在444 nm处具有CIE坐标(0.16,0.11)的发射峰,在0.21 mA cm -2处为3.23 cd A -1,在9 V时为25200