期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 16, 期 4, 页码 3806-3810出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2016.11878
关键词
Upconversion; Microcrystals; Aspect Ratio
类别
资金
- National Natural Science Foundation of China (NSFC) [51072065, 61275153, 61320106014]
- Natural Science Foundation of Zhejiang [LY12A04002, LQ14F040002]
- Natural Science Foundation of Ningbo [2014A610120]
- Foundation of Zhejiang Educational Commission [Y201430403, Y201430419]
- K. C. Wong Magna Foundation of Ningbo University, China
beta-NaYF4:Yb3+,Er3+ microcrystals of good shape and with various aspect ratios were successfully prepared using a facile hydrothermal method. Field emission scanning electron microscope images and X-ray diffraction patterns were used to characterize the resulting samples. The upconversion luminescence (UCL) properties of the products were investigated as a function of their aspect ratios. It was found that the proportion of green to red emission intensities increased from 0.8 to 1.4 in the range of aspect ratios 0.04 to 0.9. This study demonstrates a new strategy for the synthesis of UCL materials with different spectral properties simply by changing their aspect ratios.
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