Electroluminescent device with improved cathode

Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type

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313504, 428457, H05B 3326, B32B 1504

Patent

active

050598627

ABSTRACT:
An internal junction electroluminescent device is disclosed containing, in sequence, an anode, an organic hole injecting and transporting zone, an organic electron injecting and transporting zone forming a junction with the organic hole injecting and transporting zone, and a cathode comprised of a layer contacting the organic electron injecting and transporting zone containing a combination of magnesium and aluminum. Aluminum accounts for at least 80 percent of the cathode layer.

REFERENCES:
patent: 3530325 (1970-09-01), Mehl et al.
patent: 3621321 (1971-11-01), Williams
patent: 4356429 (1982-10-01), Tang
patent: 4539507 (1985-09-01), VanSlyke et al.
patent: 4720432 (1988-01-01), VanSlyke et al.
patent: 4769292 (1988-09-01), Tang
patent: 4885211 (1989-12-01), Tang et al.

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