An organic electroluminescence element is disclosed which comprises a hole transporting layer containing a hole transporting material, a light emission layer containing a host compound and a phosphorescent compound, a hole blocking layer, and an electron transporting layer, the host compound having a band gap of from 3.3 eV to 5 eV, and having a molecular weight of not less than 500, and relationship c

 
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< Electroluminescent device

> Light-emitting device, film-forming method and manufacturing apparatus thereof, and cleaning method of the manufacturing apparatus

> Organic polymer light-emitting element material having gold complex structure and organic polymer light-emitting element

~ 00545