Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1996-06-06
1997-09-16
O'Shea, Sandra L.
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313506, H01J 162, H01J 6304
Patent
active
056684380
ABSTRACT:
An organic EL device comprises a cathode, an electron transporting layer (ETL), a hole transporting layer (HTL) and an anode which are laminated in sequence, wherein the materials making up the ETL and HTL are so selected that the energy barrier for hole injection from the HTL to the ETL is substantially higher than the energy barrier for electron injection from the ETL to the HTL. The organic EL device obtained has efficient light emission from the HTL layer when an efficient fluorescent dye as an emitter is doped in the HTL or the part of the HTL close to the ETL/HTL interface.
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Harvey, III Thomas B.
Lee Hsing-Chung
Shi Song Q.
So Franky
Haynes Mack
Motorola
O'Shea Sandra L.
Parsons Eugene A.
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