Method for producing light emitting element, and light emitting element

A method for manufacturing a light-emitting element, comprising:

• a) forming an intermediate layer containing a water-soluble resin on a charge transport layer;
• b) forming a light-emitting layer containing a hydrophobic resin, a second photosensitive material, and a first luminescent material on the intermediate layer;
• c) exposing the intermediate layer and the light-emitting layer in a predetermined pattern to obtain an exposed intermediate layer and an exposed light-emitting layer;
• and
• d) developing the exposed intermediate layer and the exposed light-emitting layer with a developing solution.

A light-emitting element comprising:

• a charge transport layer;
• an intermediate layer provided on the charge transport layer and containing a first photosensitive material or a modified product of the first photosensitive material;
• and
• a light-emitting layer provided on the intermediate layer and containing a second photosensitive material or a modified product of the second photosensitive material and a first luminescent material,
• wherein the intermediate layer contains a functional material,
• wherein the functional material is a second luminescent material, and
• a weight ratio of the second luminescent material in the intermediate layer is smaller than a weight ratio of the first luminescent material in the light-emitting layer.