| 초록 |
ZnS nanopartices (NPs) have been extensively studied during the last decade due to their unique optical and electrical properties. In this study, ZnS NPs on the monodispersed spherical silica NPs (ZnS@Silica, ZnS NPs weighed from 1 wt % to 16 wt % of ZnS based on the amount of silica used) were synthesized and covered with silica thin layer on their surface (Silica@ZnS@Silica). In PL analysis, PL intensities of ZnS@Silica NPs were increased to 18 wt %, but it decreased at more than 8 wt %. These phenomena can be explained by electron coupling and photoinduced charge transfer. Their optical, structural properties, surface morphology analysis were investigated by PL instrument, UV-Vis spectrophotometer, XRD, SEM, TEM respectively. |
