Controllable Catalytic Growth of CdTe Nanostructures and Optical Property Studies

Abstract

Several high crystalline CdTe nanostructures were synthesized through a simple chemical vapor deposition using silicon sub - strate. The morphologies of CdTe nanostructures were controlled by adjusting the flow rate of the carrier gas. A canthosphere- shaped CdTe nanostructures were fabricated at the low flow rate, while branch-shaped and long CdTe nanostructures were obtained with higher flow rate. The feasible growth mechanism for these CdTe nanostructures has been proposed. Further pho- toluminescence measurements show the near infrared emission of the synthesized CdTe nanorods is significantly dependent on their size and shape. Our work provides a new synthetic method for growing CdTe nanomateirals through a controllable manner.