COMPOSITION FOR ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT ELEMENT AND PRODUCING METHOD THEREOF, AND DISPLAY DEVICE

To provide a composition capable of preparing an organic electroluminescent element by a wet film forming method, in the organic electroluminescent element, in particular the organic electroluminescent element for obtaining red luminescence, and capable of preparing the organic electroluminescent element to have higher emission efficiency and longer drive life than in the related art.SOLUTION: There is provided a composition for an organic electroluminescent element containing an organic luminescent compound and an organic solvent, wherein a ratio of the aliphatic carbon number to the aromatic carbon number in an organic luminescent compound is 50% or more and 200% or less, and a content of the organic luminescent compound in the composition for the organic electroluminescent element is 15 pts.mass or more with respect to 100 pts.mass of the total solid content other than the organic luminescent compound.SELECTED DRAWING: Figure 1 【課題】有機電界発光素子、特に赤色発光を得るための有機電界発光素子において、湿式成膜法によって有機電界発光素子の作製が可能であり、従来よりも発光効率が高く、駆動寿命が長い有機電界発光素子を作製するための組成物を提供すること。【解決手段】有機発光性化合物と有機溶剤とを含む有機電界発光素子用組成物であって、有機発光性化合物中の芳香族炭素数に対する脂肪族炭素数の割合が、５０％以上２００％以下であり、有機電界発光素子用組成物中における有機発光性化合物の含有量が、有機発光性化合物以外の全固形分１００質量部に対して１５質量部以上である、有機電界発光素子用組成物。【選択図】図１