Enhanced white light emitting device based on ZnTe nanocrystals and conductive organic polymer by surface excitons

Abstract

The white organic lighting has been intended device appearing an emission cover lightemitting conductive polymer (Poly (p-phenylene vinylene) (PPV) and poly (p-phenylene sulfide) (PPS)) as a host material for zinc telluride (ZnTe) nanocrystals (NCs) or quantum dots (QDs) and tris-(8-hydroxyquinoline)-aluminum (Alq3) together of titanium oxide (TiO2) thin layer as white light emitters. The white light-emitting electroluminescence (EL) procedure be defined by of three covers deposited successively upon the ITO glasssubstrate surface ITO/PVV: PSS/ZnTe NCs/Alq3 with TiO2/Ni. Current-voltage (I-V) attributes show a strong output current relative to the few voltages (4 V) that are used to produce acceptable white light output performance. The Commission International de l’Eclairage coordinates of the device's emitting light was recognized (X= 0.31, Y= 0.34) which were only slightly changed over a range of applied voltage (4 Volts) and correlated color temperature (CCT) was realized nearly 6250 K. The production of ZnTe NCs lightemitting device with organic polymer hole injection (PVV: PSS) and organic molecules (Alq3 with TiO2) was successful in white-light production.