Controlling the carrier recombination zone for improved color stability in a two-dopant fluorophore/phosphor white organic light-emitting diode

Effect of passivation on the sensitivity and stability of pentacene transistor sensors in aqueous media

“…To date, progress in organic materials has shown a great deal of promise due to the utilization of thin-film and multilayer devices, especially for organic light-emitting diodes (OLEDs) (Friend et al, 1999;Bhansali et al, 2009) and organic solar cells (Wohrle and Meissner, 1991). The rapid progress in this field has been, in part, due to improvements in fabrication processes and the design of new materials, with remarkable upgrading in the electronic properties of semiconducting (Murphy and Fréchet, 2007) and insulating (Klauk et al, 2007;Roberts et al, 2009) materials.…”

Efficient white organic light-emitting diodes based on an orange iridium phosphorescent complex

“…White light emission can be obtained by mixing three primary colors [3][4][5][12][13][14] or two complementary colors [11,[15][16][17][18][19]. Compared with WOLEDs based on three primary colors, WOLEDs based on complementary colors have simple structures and stable spectra, but the efficiency is much lower.…”

Full phosphorescent white-light organic light-emitting diodes with improved color stability and efficiency by fine tuning primary emission contributions

“…Complementary color emission scheme in white-light PhOLEDs is a typical example, which has been widely studied due to its simple device structure. 1,4,7,9,10,20 Most reports showed a noticeable color change in their white-light PhOLEDs when driving voltage increased. Only a few reported improvements of both color stability and efficiency, for example, Lee JY et al They attributed the improved performances to charge confinement inside the emitting layer.…”

“…[1][2][3][4][5][6][7][8][9][10][11] Among them, white-light phosphorescent organic light emitting diodes (PhOLEDs) are very promising owing to their higher efficiency than white-light fluorescent OLEDs. 1,4,[9][10][11] Considerable progresses were made in high efficient white-light PhOLED in the last decades, with a great number of color stable white-light PhOLEDs reported. 12,13 However, it is still difficult to obtain both a very stable color and a high efficiency in the same single white PhOLED.…”