Synthesis,Structure and Optical Properties of CdO Nanocrystals Directly Grown on Cd Foil

• 作 者: 李勇 凌虹 高磊 宋月丽 田明丽 周丰群
• 机 构: Department of Physics and Solar Energy Research Center,Pingdingshan University,Department of Mathema
• 出 处: Chinese Physics Letters
• 发表日期: 2015年10期
• 关键词: conducting annealing annealed tempera hydroxide cubic fabrication dissolved util

Semiconductor nanocrystals directly grown on the conducting metal can lower the contact resistance and can benefit the electron transfer between the semiconductor and the metal.In the present work,CdO nanocrystals are directly synthesized on the conducting Cd foil through a simple solvothermal method.Cd foil is used as the Cd~(2+) source and the substrate.The average size of CdO nanocrystals is ~23.1 nm by analyzing the XRD data.Moreover the growth mechanism is discussed.A hierarchic structure characterized by the nano rods and nano particles in the top and bottom layers,respectively,can be observed.From the UV-vis absorption analyzed by Tauc’s relation,the two different optical band gaps are obtained.The photoluminescence spectrum is obtained and studied.

Semiconductor nanocrystals directly grown on the conducting metal can lower the contact resistance and can benefit the electron transfer between the semiconductor and the metal. In the present work, CdO nanocrystals are directly synthesized on the conducted Cd foil through a simple solvothermal method. Cdd is used as the Cd 2+ source and the substrate.The average size of CdO nanocrystals is ~ 23.1 nm by analyzing the XRD data. More over the growth mechanism is discussed. A hierarchic structure characterized by the nano rods and nano particles in the top and bottom layers, respectively, can be observed. Flash the UV-vis absorption analyzed by Tauc’s relation, the two different optical band gaps were obtained. photoluminescence spectrum is obtained and studied.