论文部分内容阅读
Hybrid nanostructures composed of rare earth ion-doped lanthanum trifluoride nanocrystals deposited on silica nanospheres (LaF3∶yb3+/Ln3+@SiO2) and decorated with varying quantities of silver nanoparticles (Ag NPs) were synthesized using a simple strategy.and characterized by XRD,TEM, FTIR, XPS and UV-visNIR absorption.Silver loading was found to have a significant effect both on the luminescence intensity and the luminescence decay rate, with the samples with the lowest silver content showing reduced luminescence intensity over silver-free samples,while the samples with large levels of silver loading showed significant luminescence enhancement.Effective upconversion luminescence enhancements for Er3+ and Tm3+containing samples were obtained.It is believed that the enhancement from the hybrid nanostructure will find great potential in the development ofphotovoltaic solar cells.