Morphology-controlled synthesis and luminescence properties of ScPO4 center dot 2H(2)O:Ln(3+) nano/micro-crystals by a facile approach

作者：Yang, Jun^*; Cao, Jingjing; Shen, Dingyi; Xiong, Jie; Tang, Jianfeng; Hu, Shanshan

来源：CrystEngComm, 2016, 18(46): 8944-8952.

DOI：10.1039/c6ce01981a

• UP-CONVERSION EMISSION
• HYDROTHERMAL SYNTHESIS
• TUNABLE LUMINESCENCE
• ENERGY-TRANSFER
• RED EMISSION
• NANOCRYSTALS
• LN
• CRYSTALLIZATION
• EVOLUTION
• PHOSPHOR

Well-crystallized and uniform ScPO4 center dot 2H(2)O and ScPO4 center dot 2H(2)O:Ln(3+)( Ln = Ce, Eu, Tb, Lu) nano/micro-crystals with multiform morphologies, such as sphere, hexagonal plate, diamond, four-angle star, butterfly-shaped and cuboid, have been successfully synthesized by a facile hydrothermal route without any surfactant molecules. XRD, FE-SEM, TEM, PL and kinetic decay were used to characterize the as-prepared products. The size and morphology of ScPO4 center dot 2H(2)O can be determined by the pH value, reaction time, reaction temperature, additive and doping of lanthanide ions. In particular, Ln(3+) doping not only has a crucial role in the morphology of ScPO4 center dot 2H(2)O, but also affects its luminescence properties. The ScPO4 center dot 2H(2)O: Tb3+ and ScPO4 center dot 2H(2)O:Ce3+ samples display intense green and blue emissions, respectively. More importantly, the luminescence properties are closely related to morphologies and crystallinity. It can be found that the ScPO4 center dot 2H(2)O:Tb3+ sample with a hexagonal plate-like morphology possesses much higher emission intensity than those with other morphologies because of its larger anisotropic geometry. ScPO4:Ln(3+) crystals will become promising candidates for a variety of applications in down/ up-conversion luminescence, magnets, lasers, and bio-labeling.

• 出版日期2016
• 单位西南大学