Optical and electrical properties of OLED with the structure of ITO/m-MTDATA/Meo-TPD/Alq3/LiF/Al

Abstract

In this paper,the organic light emitting device (OLED) with the structure of ITO/m-MTDATA/Meo-TPD/Alq3/LiF/Al has been fabricated using Alq3 as a light-emitting layer, m-MTDATA(4,4′,4″-tri(3- methyl-phenylphenylamino) tripheny-lamine) as a hole injection buffer layer and Meo-TPD (N, N, N′, N′-tetrakis (4-methoxyphenyl)-benzidine)as a hole transport layer, as well as luminous and electrical properties were studied. The turn on voltage of device is about 6v. Its maximum brightness reaches 14300cd/m2 with applied voltage of 13v, sixteen times higher than that of the structure of ITO/Alq3/LiF/Al. When the applied voltage is 8V, the electroluminescence spectra peak is at 540nm, showing green.