Low-pass Filter Characteristics of Zns:Cu Quantum Dots Embedded in Polyvinyl Alcohol (PVA)

Zinc Sulphide (ZnS) is a group II-VI semiconductor having a large band gap of 3.54 eV for cubic and 3.91 eV for hexagonal structures which can be further increased by reducing the size. The physical and electrical properties of these nanocomposites changes significantly when doped with other suitable materials. In this paper we report synthesis, characterization and Low-Pass filter characteristics of ZnS:Cu nanoparticles embedded in PVA matrix.
Chemical route is used to prepare ZnS:Cu nanocrystals embedded in Polyvinyl Alcohol (PVA). The UV-Vis spectroscopy of the prepared sample shows an absorption peak at 301 nm. PL spectra show an emission peak at 400 nm. The gain vs frequency curve of the samples is identical to the characteristics curve of a Low Pass filter. The frequency response of the prepared samples shows their possible applications as Law Pass Filter.