METHOD OF PRODUCING ORGANIC EL ELEMENT AND ORGANIC EL ELEMENT

摘要

A composition for a hole injection/transportation layer is used for forming by patterning a hole injection/transportation layer of an organic EL element by using an ink-jet recording head, and contains an electrically conducting compound which is a component of the hole injection/transportation layer and a solvent, has a contact angle of from 30 DEG to 170 DEG relative to the material constituting the ink-jet nozzle surface of the ink-jet recording head, has a viscosity of from 1 cp to 20 cp and a surface tension of from 20 dyne to 70 dyne. Owing to such physical properties, the material and element can be designed in an optimum manner. The composition for the hole injection/transportation layer makes it possible to pattern-form a high-precision film easily, whithin short periods of time and at a low cost.