| 摘要 |
An object of the present invention is to provide a composition for organic electroluminescent element which is capable of being inhibited from a precipitation of crystal of the solutes therein and which has excellent storage stability. Another object is to provide an organic electroluminescent element which has an even layer formed by using the composition and which has a long life, low operating voltage, and high luminescent efficiency. The invention relates to a composition for organic electroluminescent element, which comprises: a solvent; and a compound group ± for organic electroluminescent element that is constituted of at least two kinds of compounds which each have a molecular weight of 3,000 or less and have a structure comprising a plurality of aromatic ring groups linked to each other, wherein the compound group ± comprises: a compound ±1 which is the smallest in the number of aromatic ring groups; and another compound ±n satisfying a specific condition, and when a structure which is the largest in the number of the aromatic ring groups, of partial structures that are common between the compound ±1 and the compound ±n, is taken as a basic framework, 60% or more of the structure of the compound ±1 is identical with the basic framework, and the compounds which constitute the compound group ± each is mixed in an amount of 1% by weight or larger, and an use thereof. |
