Patent ID: 9640775
Date: 2017-05-02
CPC Classifications: C07D,C09K,H01L,H05B

Claim:
1. An organic electroluminescence element comprising an anode, a cathode and one or more light-emitting layers provided between the anode and the cathode, wherein at least one of the one or more light-emitting layers includes at least one type of a light-emitting dopant and at least three types of non-light-emitting organic materials, a largest molecular weight among molecular weights of the at least three types of the non-light-emitting organic materials is 1500 or less, a minimum content of the at least three types of the non-light-emitting organic materials is 1% by mass or more, and the non-light-emitting organic materials are represented by a following general formula (2): wherein X represents NR′, O, S, PR′, PR′R″R′″, CR′R″ or SiR′R″; R′, R″ and R′″ each represent a hydrogen atom or a substituent; Ar represents an aromatic hydrocarbon ring or an aromatic hetero ring; and n represents an integer from 0 to 8.