Design and Synthesis of CdWO4:Sb3+ Phosphor Based on sp Energy Level Regularities of Sb3+ Ion

作者：Wang, Lili; Li, Huibin; Guo, Yunhua; Jiang, Haiyan; Wang, Qiang; Ren, Chunyan; Shi, Jinsheng^*

来源：Journal of the American Ceramic Society, 2015, 98(7): 2146-2152.

DOI：10.1111/jace.13586

• HYDROTHERMAL SYNTHESIS
• SB-3+ ION
• OPTICAL-PROPERTIES
• ABSORPTION BANDS
• CRYSTAL HOSTS
• I COMPOUNDS
• LUMINESCENCE
• CS2NASCCL6
• CS2NAYCL6
• CENTERS

Sb3+-activated CdWO4 phosphors were designed according to sp energy levels regularities of Sb3+ ion in some inorganic compounds. The sp energy levels regularities of Sb3+ in dozens of compounds were established with the aid of the dielectric theory of the chemical bond for complex crystals: E-A=6.2187-1.7584h(e), E-B=7.019-1.957h(e), E-C=7.259-1.964h(e). Environmental factor h(e) of Cd site was calculated to be 1.6583 with the refined crystal structure and refractive index of CdWO4:Sb3+. Sb3+-doped CdWO4 was synthesized through a precipitation method and its structure was refined with the General Structure Analysis System. The transition energy of A band of Sb3+ in CdWO4 can be predicted to be 3.312eV (374nm), according to the relationship equation between E-A and environmental factor h(e). By monitoring the 521nm emission band, the excitation spectrum gives a weak excitation band peaking at 355nm, which was assigned to the S-1(0)-P-3(1) transition of Sb3+ according to our prediction. Thus, Sb3+-doped CdWO4 phosphor was designed and synthesized successfully based on sp energy levels regularities of Sb3+ ion. This work is a great help to understand the spectroscopy of Sb3+ ion and will be useful for the design and development of Sb3+-doped phosphors for applications.

• 出版日期2015-7
• 单位青岛农业大学