초록 close

We have studied white OLED using two types of Zn-complexes as a emitting layer. We synthesized new emissive materials Zn(HPQ)2 as a yellow emitting material and Zn(HPB)2 as a blue emitting material. Zn-complexes have a low molecular compound and thermal stability. The fundamental structures of the fabricated OLED was ITO / NPB (40nm) / Zn(HPB)2 (30nm) / Zn(HPQ)2 / LiF / Al. We varied the thickness of the Zn(HPQ)2 layer 20, 30 40 nm. When the thickness of the Zn(HPQ)2 layer was 20 nm, 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 was (0.319. 0.338) at an applied voltage of 10 V.