Patent ID: 8053973

Claim:
A film-forming composition, which is a composition used to form a film of a hole-injecting/transporting layer of an organic electroluminescent device, wherein the film-forming composition contains a hole-injecting/transporting material and/or an electron-accepting compound and a liquid in which the material and/or the compound have been dissolved; the liquid contains two or more different first solvents having either a boiling point of at least 200° C. or a vapor pressure of 1 torr at 25° C. or lower, a molecule of said first solvents having one selected from the group consisting of an aromatic ring and an oxygen atom; an aliphatic ring and an oxygen atom; and an aromatic ring, and aliphatic ring and an oxygen atom; wherein one first solvent has a higher evaporability than another first solvent which has a lower evaporability and either a higher boiling point or a lower vapor pressure at 25° C.; and a ratio W a /W b of 1 to 2.5 where W a is the weight proportion of the first solvent having a higher evaporability and W b is the weight proportion of the first solvent having a lower evaporability; and the amount of the first solvent contained in the composition is 3 wt % or more.