LED doped with periflanthene for efficient red emission

Details LED doped with periflanthene for efficient red emission LED doped with periflanthene for efficient red emission

1997-12-23

1999-12-21

Nold, Charles

Stock material or miscellaneous articles

Composite

Of inorganic material

428691, 428917, 313504, H05B 3314

Patent

active

060046856

ABSTRACT:
An OLED having a cathode constructed from a first conducting layer. An electron transport layer constructed from a first electron transport material overlays the cathode. An electroluminescent layer constructed from the first electron transport material doped with dibenzotetraphenylperiflanthene overlays the electron transport layer. A hole transport layer constructed from a first hole transport material overlays the electroluminescent layer. The anode overlays the hole transport layer. In one embodiment of the invention, a second hole transport layer constructed from a second hole transport material is sandwiched between the anode and the first hole transport layer. In a third embodiment of the invention, a second electron transport layer constructed from a second electron transport material is sandwiched between the electroluminescent layer and the first hole transport layer.

REFERENCES:
Debad et al. "Dibenzotetraphenylperiflanthene: Synthesis, Photophysical Properties, and Electrogenerated Chemiluminescence", J. Am. Chem. Soc. 118(10), 23744-9, Jan. 1996.

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