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Light-emitting device with organic electroluminescent material and photoluminescent materials

Patent ·
OSTI ID:1175380

A light-emitting device comprises a light-emitting member, which comprises two electrodes and an organic electroluminescent material disposed between the electrodes, and at least one organic photoluminescent ("PL") material. The light-emitting member emits light having a first spectrum in response to a voltage applied across the two electrodes. The organic PL material absorbs a portion of the light emitted by the light-emitting member and emits light having second spectrum different than the first spectrum. The light-emitting device can include an inorganic PL material that absorbs another portion of the light emitted from the light-emitting member and emits light having a third spectrum different than both the first and the second spectra.

Research Organization:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-00NT40989
Assignee:
General Electric Company (Niskayuna, NY)
Patent Number(s):
6,903,505
Application Number:
09/683,345
OSTI ID:
1175380
Country of Publication:
United States
Language:
English

References (4)

White light‐emitting organic electroluminescent devices using the poly( N ‐vinylcarbazole) emitter layer doped with three fluorescent dyes journal February 1994
Near-ultraviolet electroluminescence from polysilanes journal October 1998
Multilayer White Light-Emitting Organic Electroluminescent Device journal March 1995
Single‐layer white light‐emitting organic electroluminescent devices based on dye‐dispersed poly( N ‐vinylcarbazole) journal October 1995

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