Open AccessTop-emitting white organic light-emitting devices with down-conversion phosphors: Theory and experiment
Author(s) -
Wenyu Ji,
Letian Zhang,
Ruixue Gao,
Liming Zhang,
Wenfa Xie,
Hanzhuang Zhang,
Bin Li
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.015489
Subject(s) - phosphor , white light , optics , materials science , optoelectronics , oled , white (mutation) , physics , nanotechnology , chemistry , layer (electronics) , biochemistry , gene
White top-emitting organic light-emitting devices (TEOLEDs) with down-conversion phosphors are investigated from theory and experiment. The theoretical simulation was described by combining the microcavity model with the down-conversion model. A White TEOLED by the combination of a blue TEOLED with organic down-conversion phosphor 3-(4-(diphenylamino)phenyl)-1-pheny1prop-2-en-1-one was fabricated to validate the simulated results. It is shown that this approach permits the generation of white light in TEOLEDs. The efficiency of the white TEOLED is twice over the corresponding blue TEOLED. The feasible methods to improve the performance of such white TEOLEDs are discussed.