Hydrothermal synthesis and afterglow luminescence properties of hollow SnO₂:Sm³⁺,Zr⁴⁺ spheres for potential application in drug delivery

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• 作者：Pengfei Feng ; Jiachi Zhang ; Qingsong Qin ; Rui Hu ; Yuhua Wang
• 关键词：A. Optical materials ; B. Crystal growth ; C. Photoelectron spectroscopy ; D. Optical properties
• 刊名：Materials Research Bulletin
• 出版年：February, 2014
• 年：2014
• 卷：50
• 期：Complete
• 页码：365-368
• 全文大小：883 K

文摘

A novel afterglow labeling material SnO₂:Sm³⁺,Zr⁴⁺ with hollow sphere shape and intense afterglow luminescence is prepared by hydrothermal method at 180 掳C for the first time. The morphology and the sphere growth process of this material are investigated by scanning electron microscopy in detail. The afterglow measurement shows that this hydrothermal obtained material exhibits obvious red afterglow luminescence (550-700 nm) of Sm³⁺ which can last for 542 s (0.32 mcd/m²). The depth of traps in this hydrothermal obtained material is calculated to be as shallow as 0.58 eV. The results demonstrate that although it is necessary to further improve the afterglow performance of the hydrothermal derived hollow SnO₂:Sm³⁺,Zr⁴⁺ spheres, it still can be regarded as a potential afterglow labeling medium for drug delivery.