Patent ID: 7733009
Filing Date: 2010-06-08
Classification: C09K,H01L,H05B,Y10S

Abstract:
1. An electroluminescent device comprising: a cathode, an anode, and having therebetween a light emitting layer (LEL) including an anthracene material bearing aryl groups comprising no more than two fused rings in each of the 2-, 9-, and 10-positions and a light-emitting material comprising boron or a light-emitting material comprising a styrylarene derivative; the device further comprising an electron transport layer (ETL) on the cathode side of the LEL and an organic electron injection layer (EIL) contiguous to the ETL on the cathode side, wherein the ETL contains a monoanthracene compound that is substituted with a naphthyl or a biphenyl group in the 9-position, an independently selected naphthyl or a biphenyl group in the 10-position, and an aryl group comprising no more than two fused rings in the 2-position; and wherein the EIL includes an organic heterocyclic compound selected from a derivative of 1,10-phenanthroline, a derivative of benzimidazole, and a 2,2′-bipyridyl derivative.