Self-Assembly of Cuprous Oxide Micro/Nanostructures by Photo-Reduction Method
This study used a photo-reduction method to investigate cuprous oxide (Cu2O) self-assembled micro/nanostructures, and design a test specimen with an electron concentration gradient distribution. It also observed the Cu2O reduction of the self-assembled structure with respect to electron density. SEM analysis was adopted to analyze the growth mechanism and growth model. The results showed that, its structure size increased with photo-reduction time, and as the reduction solution concentration increased, its structure crystallinity declined. The basic unit of a self-assembled microstructure was Cu2O at a diameter of 10~15nm, then these particles conglomerate in self-assembly to form various kinds of Cu2O micro/nanostructures with respect to reduction electron density, and primarily presented in the form of a cone or cube. In the process of continuous self-assembly, there were many micro-defects under the perfect crystal surface. Considering the growth rate, the final growth surface of the structure was (111) or (100).
Zhengyi Jiang and Chunliang Zhang
W. K. Chang et al., "Self-Assembly of Cuprous Oxide Micro/Nanostructures by Photo-Reduction Method", Advanced Materials Research, Vols. 97-101, pp. 2180-2183, 2010