Simultaneous size and luminescence control of KZnF3:Yb3+/Er3+ nanoparticles by incorporation of Mn2+

作者：Huang, Zhangyu; Yi, Mengji; Gao, Huiping; Zhang, Zhenlong; Mao, Yanli^*

来源：Journal of Materials Science, 2017, 52(5): 2673-2683.

DOI：10.1007/s10853-016-0558-4

• UP-CONVERSION LUMINESCENCE
• IN-VIVO
• ENERGY-TRANSFER
• DRUG-DELIVERY
• SUB-10 NM
• NANOCRYSTALS
• IMPROVEMENT
• EMISSION

A strategy is demonstrated for simultaneous size and color tuning of KZnF3:Yb3+/Er3+ nanocrystals through transition metal Mn2+ doping. The experimental results indicate that the introduction of Mn2+ into the KZnF3:Yb3+/Er3+ reaction system facilitates the decrease of the crystal size. Moreover, in the case of a high concentration of Mn2+ doping, the downshifting (DS) and upconversion (UC) luminescence all show a single red band emission. In this work, we mainly investigate the DS and UC energy transfer process among Mn2+/Yb3+/Er3+ in KZnF3 nanocrystals by the detection and analysis of the absorption, excitation, emission, and transient fluorescence spectra. The results show that both Mn2+ and Yb3+ ions can decrease the green emission while improving the red luminescence of Er3+. This DS and UC single red color tuning is significant for the application of nanoparticles in light conversion, biological labeling, or plant photosynthesis.

• 出版日期2017-3
• 单位河南大学