A simple one step method for the synthesis of hexagonal Cd_(1-x)Zn_xS (x=0-0.75)

摘要

Attempt has been made to synthesize hexagonal Cd_(1-x)Zn_xS (x=0-0.75) by a simple solution phase method. The samples were characterized by XRD, SEM and UV-Vis spectroscopy. The XRD studies confirmed the formation of hexagonal modification of the above mentioned ternary system. SEM revealed formation of an agglomerated product with grain sizes of ～ 100 nm. The mode of growth was confirmed as Ostwald ripening from UV-Vis studies. Shift in the exciton peak on increasing the Zn~(2+) was explained on the basis of formation of the solid solution. Photoluminescence studies reveal a shift in the luminescence band with Zn signifying the formation of solid solution. Also the band arises from the surface states demonstrating high concentration of surface defect states.