Organic electroluminescent device

An OLED, comprising an anode, a cathode, and an organic layer;

• wherein the organic layer contains a light emitting layer, or a light emitting layer and one or more layers comprising a hole injection layer, a hole transport layer, an electron injection layer, an electron transport layer, or a combination thereof;
• wherein the light emitting layer is a host-guest doping system comprising host materials and guest materials;
• wherein the light emitting layer emits a blue light with a wavelength of 440-490 nm;
• and wherein the host material or the guest material has a structure of Formula (I),
• wherein R1-R17 independently represent hydrogen, halogen, cyano, nitro, C1-C8 alkyl, C1-C8 alkoxy, C2-C8 substituted or unsubstituted alkenyl, C2-C8 substituted or an unsubstituted alkynyl, C1-C4 alkyl substituted or unsubstituted phenyl, C1-C4 alkyl substituted or unsubstituted naphthyl, or combined C1-C4 alkyl substituted or unsubstituted fluorenyl;
• and wherein Ar1, Ar2, and Ar3 independently represent C1-C4 alkyl substituted phenyl, phenyl, or pyridyl.