Study of steady state and time resolved photoluminescence of thiol capped CdS nanocrystalline powders dispersed in N,N-dimethylformamide

► Synthesis of thiol capped CdS quantum dots (QDs) in DMF and isolated as powders. ► Effect of concentration of reactants on the size of the thiol capped CdS QDs. ► Optical properties of thiol capped CdS QD powders dispersed in DMF. ► Higher concentration of capping reduces the surface defects. ► Higher PL quantum yield of thiol capped CdS QD powders dispersed in DMF.