Fabrication and enhanced optical properties of ZnSe:Mn quantum dots/poly(LMA-co-EGDMA) composite thin film by alkylthiol modification

Quantum dots (QDs) based composite thin films show great promise in the application areas ranging from light-emitting diodes (LEDs), nonlinear optical devices to luminescent solar concentrators. We propose and demonstrate a facile method to fabricate ZnSe:Mn QDs/Poly (lauryl methacrylate-co- ethylene glycol dimethacrylate) (QDs/ Poly(LMA-co-EGDMA) composite thin films which show high transmittance up to 90%. Moreover, the as prepared QDs/P composite thin films exhibits high quantum yields (QYs) which could be well tuned from 35% to 67%.The enhanced transparency and QYs of these QDs/P composite thin films are attributed to the triple function of surface decorated 1-dodecanethiol (DDT) including the reducing of surface defects, oxidation resisting and enhancement of dispersity. These prominent performances make them very attractive for applications in various future light-emitting technologies and advanced optoelectronic devices.