Patent ID: 9741940
Date: 2017-08-22
CPC Classifications: C07D,C09K,H01L,H05B

Claim:
1. A light-emitting element comprising: an anode; a cathode; and a light-emitting layer that is disposed between the anode and the cathode and, when electric current flows between the anode and the cathode, emits light, wherein the light-emitting layer contains a compound represented by any of formulae (2) to (4) as a light-emitting material and a compound represented by formula IRH-2 as a host material for the light-emitting material; where each R independently represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a ring group, wherein the ring group includes two adjacent carbon atoms that bond to each other; where each of R