Highly efficient blue organic light-emitting diode with an oligomeric host having high triplet-energy and high electron mobility

Carbazole-based polymers as hosts for solution-processed organic light-emitting diodes: Simplicity, efficacy

“…Procedure used to fabricate OLEDs can strongly impact performances and this point was examined with P69 and P70 that both possess a high triplet energy level and a high electron mobility [164]. While using FIrpic as the dopant, device efficiencies could be greatly enhanced by pre-heating the emissive solution at an elevated temperature before spin-coating.…”

Fabrication and Characterization of White Phosphorescent Polymer Light Emitting Diodes Using PVK:FCNIrpic:Ir(mppy)3:Ir(piq)3

“…The remaining solvent was removed by soft baking for 10 min at 100 • C. The PEDOT:PSS was used for the hole transport layer [7]. The PVK [8,9] as the host material and FCNIrpic [10], Ir(mppy) 3 [11,12], Ir(piq) 3 [13,14] phosphorescent materials as the guest materials were introduced into the white emission layer. The emission layer of the WPhPLED was fabricated by blending various concentrations of Ir(piq) 3 into the PVK host and FCNIrpic, Ir(mppy) 3 guest materials with fixed concentrations of PVK:FCNIrpic:Ir(mppy) 3 = 100:1.5:0.1 wt%.…”

Electro-active polymers containing electronically isolated N-phenyl-N-naphtylamine fragments

“…The current-voltage and luminance-voltage characteristics were recorded under forward bias using a computer controlled Keithley 2400 source meter and a PR650 Spectrometer. All measurements were performed at ambient conditions in air [15,16]. (1), epichlorohydrin, tetra-nbutyl ammonium hydrogen sulphate (TBAS), BF 3 ·O(C 2 H 5 ) 2 , NH 4 SCN, potassium carbonate and potassium hydroxide were purchased from Aldrich and used as received.…”