Patent ID: 7537843
Filing Date: 2009-05-26
Classification: C07F,C09K,H01L,H05B,Y10S

Abstract:
1. An organic electroluminescent device (OELD), comprising: a substrate; an anode and a cathode disposed on the substrate; a hole transport layer disposed between the anode and the cathode; an electron transport layer disposed between the hole transport layer and the cathode; and an emission layer disposed between the hole transport layer and the electron transport layer, wherein the emission layer comprises a host material and a dopant material, and the chemical structure of the dopant material is shown as the formula [I]: wherein “M” is a metal whose atomic weight is greater than 40, while “S” is selected from the group consisting of alkyl, alkoxy, haloalkyl, halogen, and hydrogen, wherein the concentration of the dopant material in the emission layer ranges from 1 wt % to 20 wt %.