Optical and vibrational properties of Ni doped ZnSe nanospheres

Abstract

Ni doped ZnSe nanospheres in presence of PVA have been synthesized via a cost effective and simple solvothermal method. The structural and rnorphological characterization of as undoped and doped samples have been made using X-ray diffraction (XRD) and FESEM imaging techniques and it reveals the formation of Ni doped ZnSe nanospheres with crystallite size 6 nm. The observed red shift in absorption edge of Ni doped ZnSe as compared to undoped sample also indicates the formation of nanospheres. The PL spectra of Ni doped sample shows red shift with enhanced intensity. The molecular vibrations of PVA capped Ni doped ZnSe nanospheres have been studied and four new vibrational modes have been observed and reported.