The high-quality of bio-encapsulated CdSe/ZnSe composite nanorods has been developed by using environmentally friendlier amino acid solvents L-cystine and CTAB. The crystallographic properties of CdSe/ZnSe systems were investigated by XRD pattern, which are indicating both CdSe and ZnSe nanocomposite hetrostructures are in wurtzite hexagonal phase. Energy dispersive X-ray analysis (EDA) confirms the elemental compositions of the two components are rich. The SEM/TEM photographs confirm the presence of nanorods (NRs), the obtained NRs have diameter in the range of 50-70 nm and the length is in the range of 150-175 nm. The photoluminescence (537 nm) and absorption (524 nm) spectral study support the existence of predominant nanorods. The lattice plane can be indexed with the wurtzite (hexagonal) structure and calculated interplanar distance is around 0.338 nm. The XRD and UV/PL characteristic studies confirm quantum confinement effect by the blue shift. The narrow photoluminescence were observed at 537 nm in the prepared nanorods. The mechanism of formation of the nanorods were investigated and discussed on the basis of experimental results.

Keywords: Bio-Encapsulated; CdSe/ZnSe; Nanorods; Photoluminescence; SEM; TEM;