Light-emitting Device with Organic Electroluminescent Material and Photoluminescent Materials
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2005 |
ISBN-10 | : OCLC:958230589 |
ISBN-13 | : |
Rating | : 4/5 (89 Downloads) |
Book excerpt: 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.