Synthesis of cadmium selenide nanorods by polyethylene glycol-assisted solvothermal process

Cadmium selenide nanorods were successfully synthesised using Cd(NO3)2 and Se powder in ethylenediamine by the polyethylene glycol-assisted solvothermal reaction at 200°C for 72 h. Phase of the product was detected using X-ray powder diffractometer and selected area electron diffractometer. The XRD and electron diffraction patterns were simulated by CaRIne Crystallography 3.1 program and were found to be in accordance with those of the interpretation. The product analysed using scanning electron microscope, transmission electron microscope and high-resolution transmission electron microscopy, appeared as the nanorods with their growth in the [1 1 1] direction. The direct energy band gap, determined from the UV–visible absorbance, was 1.82 eV.