Solution-Processed Quantum Dot LEDs Using Molybdenum Oxide and Titanium Oxide as Charge Transport Layers

All-solution-processed red quantum dots LEDs (QD-LEDs) were fabricated using MoO3 metal oxide and sol-gel TiO2 as the anode and cathode buffer layers, respectively. The metal oxides were synthesized using simple solution methods. A hybrid structure of a core-shel/shell type red QD was synthesized. The QD-LEDs had the following structure: ITO/MoO3/(CdSe/CdS/ZnS) QDs/sol gel TiO2/Al. The J-V-L characteristics of the solution-processed QD LED showed a maximum luminescence of 71.54 cd/m(2) at an operating voltage of 7.0 V. The properties of the synthesized QD and LED device were characterized.