Organic thin film, method for producing organic thin film, organic electroluminescent element, display device, lighting device, organic thin film solar cell, photoelectric conversion element, thin film transistor, coating composition, and material for organic electroluminescent element

Provided is an organic thin film with which excellent electron injection properties and electron transport properties can be obtained when used in an electron injection layer of an organic EL element. The present invention relates to an organic thin film characterized by being a single-layer film comprising a first material, which is a hexahydropyrimidinopyrimidine compound having a structure represented by general formula (1), and a second material that transports electrons, or a laminated film comprising a film comprising the first material and a film comprising the second material. (In general formula (1), R1 represents an aromatic hydrocarbon group having or not having a substituent, an aromatic heterocyclic group, an arylalkylene group, a bivalent-bivalent chain or cyclic hydrocarbon group, or a group obtained by combining two or more of these groups, or a group obtained by combining one or more of these groups with a nitrogen atom. And n is an integer of 1-4. ) [Formula 1] 本发明提供在用于有机EL元件的电子注入层的情况下可得到优异的