Kim Dong-Eun, Kwon Young-Soo, Shin Hoon-Kyu
J Nanosci Nanotechnol. 2015 Jan;15(1):488-91. doi: 10.1166/jnn.2015.8417.
We have studied white OLED using two types of Zn-complexes as an emitting layer. We synthesized brand new two emissive materials, Zn(HPQ)2 as a yellow emitting material and Zn(HPB)2 as a blue emitting material. The Zn-complexes are low-molecular compounds and stable thermally. The fundamental structures of the fabricated OLED was ITO/NPB (40 nm)/Zn(HPB)2 (30 nm)/Zn(HPQ)2/LiF/Al. We varied the thickness of the Zn(HPQ)2 layer by 20, 30, and 40 nm. When the thickness of the Zn(HPQ)2 layer was 20 nm, the white emission was achieved. The maximum luminance was 12,000 cd/m2 at a current density of 800 mA/cm2. The CIE coordinates of the white emission were (0.319, 0.338) at an applied voltage of 10 V.
我们研究了使用两种锌配合物作为发光层的白色有机发光二极管。我们合成了全新的两种发光材料，即作为黄色发光材料的Zn(HPQ)2和作为蓝色发光材料的Zn(HPB)2。这些锌配合物是低分子化合物且热稳定性良好。所制备的有机发光二极管的基本结构为ITO/NPB（40纳米）/Zn(HPB)2（30纳米）/Zn(HPQ)2/LiF/Al。我们将Zn(HPQ)2层的厚度分别设置为20纳米、30纳米和40纳米。当Zn(HPQ)2层的厚度为20纳米时，实现了白色发光。在电流密度为800毫安/平方厘米时，最大亮度为12000坎德拉/平方米。在施加电压为10伏时，白色发光的CIE坐标为(0.319, 0.338)。
