Annealing of ZnS nanocrystals grown by colloidal synthesis

Experimental and theoretical studies on the enhanced photoluminescence activity of zinc sulfide with a capping agent

“…[8][9][10][11][12][13][14] Some of these methods employ the use of capping agents for the passivation of these nanoscrystals or to activate desired morphologies. [15][16][17] Several reports in the literature describe the conditions required for PL. [18][19][20][21] In this paper, we present a comparative study of an intense and broad PL at room temperature for ZnS nanocrystals synthesized by an efficient microwave-assisted solvothermal method, [22][23][24] for different times to clarify the roles capping agents play in the enhanced PL activity of ZnS.…”

Synthesis of wurtzite-phase ZnS nanocrystal and its optical properties

“…Here, we have reported the synthesis of hexagonal wurtzite phase of ZnS NCs through annealing of the cubic ZnS nanoparticles, prepared through chemical precipitation method [18]. Annealing process is effective for reproducible size control of NCs and also it can be used to improve the crystal quality and stability which are required for device purposes [23][24][25]. There is only one report [24], so far, on annealing treatment of colloidal ZnS NCs, to the best of our knowledge.…”

“…Annealing process is effective for reproducible size control of NCs and also it can be used to improve the crystal quality and stability which are required for device purposes [23][24][25]. There is only one report [24], so far, on annealing treatment of colloidal ZnS NCs, to the best of our knowledge. However, Motlan et al [24], reported no phase transition of their prepared ZnS NCs.…”

“…There is only one report [24], so far, on annealing treatment of colloidal ZnS NCs, to the best of our knowledge. However, Motlan et al [24], reported no phase transition of their prepared ZnS NCs.…”

Effect of thermal annealing on dual photoluminescence emission characteristics of chemically synthesized uncapped Mn2+ doped ZnS quantum dots

“…During annealing the changes in crystal structure and stoichiometric ratio of the constituent materials might get altered and it leads to a change in the PL emission properties. However, in literature various reports on the changes on PL emission properties of annealed ZnS and ZnS:Mn QDs exists [14][15][16][17][18][19][20]. There are reports of PL quenching [14,16] as well as enhancement [17][18][19] from ZnS and ZnS:Mn QDs on annealing.…”