Ntwaeaborwa O.M. – TechConnect Briefs

Effects of ZnO buffer layer and depth profiling analysis of bulk heterojunction organic solar cells

Mbule P.S., Kim B.S., Kim T-H., Kim B.S., Kim T-H., Swart H.C., Ntwaeaborwa O.M., University of the Free State, ZA

Bulk heterojunction organic solar cells (BHJs) with ZnO nanoparticles buffer layer between the active layer and the aluminum (Al) top electrode were fabricated. The BHJs comprised of successive layers of poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), a blend of [...]

Luminescent mechanism of bulk and nano ZnS:Mn2+ phosphors

Biggs M.M., Ntwaeaborwa O.M., Swart H.C., Hoffman M.J.H., University of the Free State, ZA

In this study ZnS nanophosphors, with or without different concentrations of Mn2+ activator ions, were synthesized by using the chemical precipitation method. Luminescent properties of the samples were determined by photoluminescence (PL) measurements. Two peaks [...]