Pure blue emission from undoped organic light emitting diode based on anthracene derivative

Efficient non-doped blue-light-emitting diodes incorporating an anthracene derivative end-capped with fluorene groups

“…The control ADN-based device showed inferior EL performance with maximum efficiencies of 2.9% and 1.9 lm W À1 , which were similar to the reported values of other ADN-based devices. [37][38][39] In the case of device II, we replaced TPBI with a novel ETL material, 2-tert-butyl-9,10-bis[4 0 -(1-phenylbenzoimidazyl)biphenyl-4-yl]anthracene (BIAn, Scheme 1), which has a lower LUMO (À3.07 eV, Table 1) than that of TPBI (À2.7 eV), to facilitate electron injection from the cathode to the organic layer. Fig.…”

Enhancement of Efficiency and Lifetime of Blue Organic Light-Emitting Diodes Using Two Dopants in Single Emitting Layer

“…The 470 nm emission band with two vibronic sidebands is ascribed to DSAph. Emission of ADN at 452-455 nm [7][8][9] was not observed, indicating efficient energy transfer from ADN to the dopant. Emission of BD-3 at 448 nm [10] was also not observed because of much smaller concentration than DSA-ph.…”

Efficient near ultraviolet organic light-emitting devices based on star-configured carbazole emitters

“…Organic light-emitting devices (OLEDs) have been attracting a great deal of attentions due to their superb display image quality and demonstrated market potentials in small-to-medium mobile display applications [1,2]. During the past two decades, most studies mainly focus on red, green, blue color emission and their performance has been improved dramatically [3e6], but relatively little research and progress are performed on shorter wavelengths, i.e., near ultraviolet to ultraviolet light, despite which has a potential as exciting light sources for all colors' emission, high-density information storage devices, and as potential host materials for visible light emission [7e9].…”