| abstract |
The present invention provides an organic electroluminescent device having a light emitting layer between an anode and a cathode, wherein the light emitting layer is a guest of a red light emitting material; A first host material having a first EL peak and a second host material having a second EL peak different from the first EL peak, and wherein the first and second host materials are each contained at least 10%. An organic electroluminescent device comprising a host material having an EL peak between the first EL peak and the second EL peak is provided. The present invention also provides an organic electroluminescent device having a light emitting layer between an anode and a cathode, wherein the light emitting layer is a guest of a red light emitting material; Provided is an organic electroluminescent device comprising two or more host materials ranging from 500 nm to 600 nm in PL maximum emission peak, facilitating charge transfer, or transferring energy to the guest. |