Patent ID: 9147854
Filing Date: 2015-09-29
Classification: H01L

Abstract:
1. A light-emitting element comprising: a first electrode; a first light-emitting layer formed over the first electrode; a second light-emitting layer formed on and in contact with the first light-emitting layer; and a second electrode formed over the second light-emitting layer, wherein the first light-emitting layer includes a first light-emitting substance and a hole-transporting organic compound, wherein the second light-emitting layer includes a second light-emitting substance and an electron-transporting organic compound, wherein the hole-transporting organic compound is a compound represented by a general formula (1) below, and wherein, in the general formula (1), A represents any one of a substituted or unsubstituted phenyl group and a substituted or unsubstituted naphthyl group, and each of R