^aDepartment of Physics and Astronomy College of Science, King Saud University, Riyadh, Saudi Arabia

^bETHICSS International Centre for Sustainability and Security 21 Colliston Drive Broughty Ferry Dundee DD5 3TL UK

The presented approaches possess a new paradigm to tune of optical properties of polymers by introducing nanoparticles. Hybrid nanocomposite offers a low-cost solution- processable approach that compromises new opportunities for printed LEDs. On the other hand the HPLED sare the subject of ample concern for next-generation display technology with the prospective to be printed into manifold design areas and/or pixels. The OLEDs and HPLED are concocted by using conjugated polymers (PFO, SY) and a hybrid approach is implemented by introducing the ZnO NPs into polymers to tune the emission color and external quantum efficiency (EQE) of HPLEDs. Moreover, the results proposed, that by introducing nanoparticles into the polymer matrix, the EQE of the HPLEDs could be increased by 65%. We believe that the improved efficiencies of these devices are facilitating the commercialization of these devices.