UV-Assisted Synthesis of White Emissive CdS Nanocrystals at Room Temperature

Abstract

In this work CdS nanocrystals (NCs) were synthesized by a simple UV-assisted method. Prepared NCs were characterized by means of XRD, FTIR, TEM, UV-vis, and PL analyses. Synthesized NCs was in hexagonal phase with an average size about 3.5 nm. The NCs bandgap shorten from 3.6 to 3.2 eV only by increasing the illumination from 3 to 12 min. PL spectra showed a white emission and PL peak shifted from near 518 nm to 540 nm by increasing illumination time from 3 to 12 min.