Properties of yellow organic light-emitting devices based on E-2-2-5-bromothinophen-2-ylvinylquinolin-Zinc

We have investigated the electroluminescence (EL) characteristics of a novel yellow emitting material (BTHQZn). According to the device structure of 2T-NATA(20nm)/NPB (20nm)/BTHQZn(30nm)/BCP(10nm)/Alq(20nm)/LiF(5nm)/Al,we can concludes that the maximum luminous efficiency reaches up to 0.37cd/A, and maximum luminance up to 1173cd.m-2. The yellow light emission peak is located at 598nm and the Commission Internationale De L, Eclairage(CIE) coordinates slightly vary from(0.3479, 0.5424) at 8V to (0.3373, 0.5233) at 15V.At the same time, a series of yellow devices are fabricated with the structures of ITO/2T-NATA(40nm)/NPB(10nm)/Alq:x%BTHQZn(35nm)/Alq (35nm) LiF(5nm)/Al, (x=1, 2, 3, 5),which has the maximum luminous efficiency of 2.12cd/A and the maximum luminance of 3180cd.m^-2.