COMPOSITION POUR ÉLÉMENT ÉLECTROLUMINESCENT, PROCÉDÉ DE PRODUCTION DE COMPOSITION POUR ÉLÉMENT ÉLECTROLUMINESCENT, PROCÉDÉ D'ÉVALUATION DE COMPOSITION POUR ÉLÉMENT ÉLECTROLUMINESCENT, ÉLÉMENT ÉLECTROLUMINESCENT ET PROCÉDÉ DE PRODUCTION D'ÉLÉMENT ÉLECTROLUMINESCENT

摘要

Provided is a composition for a light-emitting element, comprising: a host material; and a guest material,wherein the host material is a compound comprising at least one selected from the group consisting of an aromatic hydrocarbon group and a heterocyclic group,the guest material is a compound having a condensed heterocyclic group comprising at least one selected from the group consisting of a boron atom, an oxygen atom, a sulfur atom, a selenium atom, an sp