Perceiving the influence of phenyl-carbazole isomers on sulfone/thioxanthone-based D–A–D hosts: realizing efficient red-phosphorescent OLEDs

Abstract

We successfully synthesized six host materials with a donor–acceptor–donor configuration.

Ultralow Dark Current Density of Organic Photodetectors and Organic Light-Emitting Diodes Endowed by Highly Thermally Stable Derivatives of 2,7-Di-tert-butyl-9,9-dimethyl-9,10-dihydroacridine and Phenanthroimidazole Exhibiting Balanced Bipolar Charge Transport

“…EL spectra of OLEDs A–D mostly resulted from the emission of Ir­(piq) 2 acac peaked at 630 nm . EL spectra of devices A–D were characterized by the slightly different full width at half maxima (fwhm), apparently because of the different polarity of the hosts.…”

“…EL spectra of OLEDs A−D mostly resulted from the emission of Ir(piq) 2 acac peaked at 630 nm. 32 EL spectra of devices A−D were characterized by the slightly different full width at half maxima (fwhm), apparently because of the different polarity of the hosts. Device B, with the highest fwhm of 96 nm, was characterized by the lowest EQE values and poorest host−guest energy transfer (Figure 5b, inset).…”