Polymeric fluorescent substance, polymeric fluorescent substance and polymer light-emitting device using the same

摘要

A polymeric fluorescent substance or polymeric fluorescent substance solution is disclosed which can attain higher luminous efficiency as a polymer LED. The polymeric fluorescent substance has a specific content of water or poor solvent. Also disclosed is an organic electroluminescence device comprising at least one light-emitting layer that contains substantially no particle-like foreign materials having a diameter of more than 1 mum and that has few dark spots.