LIGHT-EMITTING ELEMENT, DISPLAY DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE

摘要

A light-emitting element containing a light-emitting material with high light emission efficiency is provided. The light-emitting element includes a high molecular material and a guest material. The high molecular material includes at least a first high molecular chain and a second high molecular chain. The guest material has a function of exhibiting fluorescence or converting triplet excitation energy into light emission. The first high molecular chain and the second high molecular chain each include a first skeleton, a second skeleton, and a third skeleton, and the first skeleton and the second skeleton are bonded to each other through the third skeleton. The first high molecular chain and the second high molecular chain have a function of forming an excited complex.

主权项

1. A light-emitting element comprising:
a high molecular material comprising at least a first high molecular chain and a second high molecular chain; and a guest material, wherein each of the first high molecular chain and the second high molecular chain comprises:
a first skeleton configured to transfer holes;a second skeleton configured to transfer electrons; anda third skeleton, wherein the first skeleton and the second skeleton are bonded to each other through the third skeleton, and wherein the first high molecular chain and the second high molecular chain are configured to form an excited complex.