| Title |
Fabrication of White OLED Using Zn(HPB)2 and Zn(HPQ)2 as a emitting layer |
| Authors |
김동은(Kim, Dong-Eun) ; 김병상(Kim, Byoung-Sang) ; 김경철(Kim, Gyong-Chol) ; 신훈규(Shin, Hoon-Kyu) ; 권영수(Kwon, Young-Soo) |
| Keywords |
White OLED ; Zn-complexes |
| Abstract |
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/m^2 at a current density of 800 mA/cm^2. The CIE coordinates of the white emission was (0.319. 0.338) at an applied voltage of 10 V. |