Effects of Cr3+ concentration on the crystallinity and optical properties of Cr-doped Al2O3 powders by solid-state reaction method

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Zhu, Yan-Lin^1 ; Liu, Shuai^1 ; Zhang, Xiao-Kun^1 ; Xiang, Yong^1

School of Energy and Science Engineering, University of Electronic Science and Technology of China, Chengdu

611731, China^1

关键词: Al2O3 powder;    Crystallinities;    Emission peaks;    Incident light;    Luminescence material;    Powder material;    Ruby lasers;    Solid state reaction method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/2/022037/pdf
DOI  :  10.1088/1757-899X/382/2/022037

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The Al2O3 crystal contains a little of amount of Cr3+, which name is ruby, is applied to ruby laser. In our research, Al2O3: Cr3+ powder material is prepared via solid state reaction. Effects of different Cr3+ concentration on the crystallinity and optical properties of the material were investigated. The experimental results indicate that the material shows good crystallinity at 1200°C. The α crystal of Al2O3: Cr3+ powder is improved its optical properties. Moreover, the optical of Al2O3: Cr3+ increases by the Cr3+ concentration's increasing until 0.3 wt%. Then, the optical of Al2O3: Cr3+ decreases by the Cr3+ concentration's increasing until 0.3 wt%. So the 0.3 wt% of Cr3+ is the best results. This kind of luminescence material has a very obvious emission peak under the incident light of 694nm.