Synthesis and Growth of Flower-Like Zn-Doped CdSe Microstructures

Abstract

Hexagonal phase flower-like Zn-doped CdSe (Cd1-xZnxSe, x = 0.3) semiconductor microstructures from the solid air-stable precursor have been achieved in the mixed solution of ethylenediamine (en) and ethylene glycol (EG) at 180°C for 12 hours. Characterized by powder x-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), energy dispersive spectrum (EDS), and UV-vis absorption spectroscopy, it can be seen that the as-synthesized Cd0.7Zn0.3Se is hexagonal phase, and each flower-like Cd0.7Zn0.3Se microstructure is made up of many Cd0.7Zn0.3Se nanoflakes. From the UV-vis absorption spectrum of the product, it was observed that the optical band gap energies of flower-like Cd0.7Zn0.3Se microstructures shift toward shorter wavelengths compared with CdSe.