采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(E)-2-(4-(dipheny-lamino)styryl)quinolato-zinc (TPAHQZn)作为发光层,制备了结构为 ITO/ 4,4′,4″-{N,-(2-naphthyl)-N-phenylamino}-triphenylamine (2T-NATA)(15 nm)/ (E)-2-(4-(diphenylamino)styryl)quinolato-zinc (TPAHQZn)(x nm)/9,10-bis(2-naphthyl)anthracene(ADN)(31 nm)/ tris(8-quinolinolato) aluminum(Alq3)((65-x) nm)/LiF(0.6 nm)/Al的黄色有机电致发光器件。研究了不同厚度的发光层对器件性能的影响。TPAHQZn厚度为30 nm 的器件在14 V电压下实现了黄光发射,最大发光亮度为 2 479 cd/m2,最大电流效率为0.84 cd/A,色坐标由8 V(6.346 cd/m2)时的(0.502,0.449 5)到14 V(2 479 cd/m2 )时的(0.497 9,0.453)变化不大,器件的发光颜色稳定。

Using(E)-2-(4-(diphenylamino)styryl)quinolato-zinc (TPAHQZn) as a hole-transporting emitter,a yellow OLED was fabricated with the molecular structure:indium-tin oxide(ITO)/ 4,4′,4″-{N,-(2-naphthyl)-N-phenylamino}-triphenylamine (2T-NATA)(15 nm)/ (E)-2-(4-(diphenylamino)styryl)quinolato-zinc (TPAHQZn)(x nm)/9,10-bis(2-naphthyl)anthracene(ADN)(31 nm)/ tris(8-quinolinolato) aluminum(Alq3)((65-x) nm)/LiF(0.6 nm) /Al. By adjusting thicknesses of TPAHQZn,a yellow OLED was obtained which has the maximum luminous efficiency of 0.84 cd /A (at 10 V) and maximum luminance of 2 479 cd /m2 (at 14 V). The device emits pure yellow light efficiently and stably,the Commission Internationale De LEclairage (CIE) coordinates slightly varied from (0.502,0.449 5) (6.346 cd/m2,at 8 V) to (0.497 9,0.453) (2 479 cd/m2,at 14 V).