利用一种既具有空穴传输特性又具有发光特性的新型荧光染料N-乙基咔唑-2-乙烯基-8-羟基喹啉锌［(E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl) quinolato-zinc, CzHQZn］掺杂在NPBX中作为空穴传输层，CzHQZn同时还作为发光的主体，制备了结构为ITO/2T-NATA(30 nm)/NPBX∶25%CzHQZn(x nm)/BCP(10 nm)/Alq3 (60-x) nm/ LiF(0.5 nm)/Al的有机发光器件(x 为掺杂发光层的厚度),掺杂发光层的厚度按照15，20，25，30 nm进行变化，相应改变Alq3的厚度，使得这两者的总厚度为60 nm保持不变。当掺杂发光层的厚度是20 nm，Alq3的厚度是40 nm，其他层厚度保持不变时，器件在4 V电压下实现了黄光发射,色坐标为(0.514 6,0.470 5)，亮度是1.078 cd/m2。在14 V的电压下，器件最大发光亮度为449 0 cd/m2, 最大发光效率为0.98 cd/A。

The performance of yellow organic light-emitting devices (OLEDs) based on a novel material ［(E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl) quinolato-zinc (CzHQZn)］ with an emitting/hole-transporting layer as an acceptor was investigated. These devices were fabricated as follows: ITO/2T-NATA(30 nm)/NPBX∶25% CzHQZn(x nm)/BCP(10 nm)/Alq3(60-x) nm/LiF(0.5 nm)/Al(x: the thickness of doping layer). The x is 15,20,25,30 nm, respectively, the thickness of Alq3 is correspondingly changed, the total thickness of doping layer and Alq3 is a constant of 60 nm.When x is 20 nm, the thickness of Alq3 is 40 nm, a yellow OLED can be obtained with the CIE coordinates of (0.514 6,0.470 5),the luminance of 1.078 cd/m2 at 4 V. The maximum luminance is 449 0 cd/m2 at 14 V, and the maximum luminous efficiency is 0.98 cd/A.