Physical and Optical Characterization of Mn-doped ZnS Nanoparticles Prepared via Reverse Micelle Method Assisted by Compressed CO2

摘要

This paper presents the study on the Mn-doped ZnS(ZnS:Mn)nanoparticles synthesized using reverse micelle method assisted by compressed CO2 at 60 bar and 40oC.Effects of retention time(30-120 min)on the particle formation were studied.The optical properties,size,morphology,and structure of the resulting particles were investigated.The results showed that ZnS:Mn nanoparticles were successfully formed with particle size ranging from 2 to 3 nm,which showed quantum size effects.The highest photoluminescence(PL)intensity ratio was found at 60 min retention time.The increase in photoluminescence(PL)intensity ratio indicated an increased homogeneity of nanoparticle growth with decreased surface defects.