Patent ID: 8431242
Filing Date: 2013-04-30
Classification: C07C,C09K,H01L,H05B

Abstract:
1. An OLED device comprising a cathode, an anode, and therebetween: (a) a light emitting layer containing a non-light-emitting fluoranthene compound with a 7,10-diaryl substituted fluoranthene nucleus having no aromatic rings annulated to the fluoranthene nucleus; (b) an additional layer, containing an organic alkali metal compound; and (c) an electron-transporting layer including a polycyclic aromatic hydrocarbon, wherein the additional layer is located between the cathode and the electron transporting layer; and wherein the organic alkali metal compound is according to Formula (V): wherein: Z and the dashed arc represent two to four atoms and the bonds necessary to complete a 5- to 7-membered ring with the lithium cation; each A represents hydrogen or a substituent and each B represents hydrogen or an independently selected substituent on the Z atoms, provided that two or more substituents may combine to form a fused ring or a fused ring system; and j is 0-3 and k is 1 or 2; and m and n are independently selected integers selected to provide a neutral charge on the complex, wherein the non-light-emitting fluoranthene compound and the polycyclic aromatic hydrocarbon are independently a fluoranthene compound of Formula (II): wherein: R R is hydrogen or a substituent; and n and m are independently 1-5, and wherein the light emitting layer contains the fluoranthene host and a dopant chosen from anthracene, tetracene, xanthene, perylene, phenylene, dicyanomethylenepyran, thiopyran, polymethine compounds, pyrylium, thiapyrylium, arylpyrene, arylenevinylene, periflanthene, bis(azin