Uniform octahedral-shaped Y2O3:Eu3+ submicron single crystals: Solid-state synthesis, formation mechanism and photoluminescence property

作者：Chen, Weifan^*; Zhuo, Mingpeng; Liu, Yang; Fu, Sulei; Liu, Yue; Wang, Yiping; Li, Zhizhou; Li, Yongxiu; Li, Yingyi; Yu, Lixin

来源：Journal of Alloys and Compounds, 2016, 656: 764-770.

DOI：10.1016/j.jallcom.2015.10.047

• Phosphors
• Solid state reactions
• Crystal growth
• Microstructure
• Scanning electron microscopy

For the first time, uniform octahedral-shaped Y2O3:Eu3+ submicron single crystals with photoluminescence (PL) superior to the as-prepared aggregated spherical counterparts were prepared via a room-temperature solid-state metathesis reaction and subsequent calcination of the as-milled mixtures containing an in situ formed salt as by-product. Their formation mechanism is also discussed based on preferential growth and self-assembling of nanocrystals in the presence of the salt In summary, the approach promises a great potential in the large scale preparation of octahedral Y2O3:Eu3+ submicron phosphors due to its solvent-free, addictive-free, high-yielding and eco-friendly characteristics.

• 出版日期2016-1-25
• 单位上海交通大学; 南昌大学