Upconversion luminescence properties and mechanism of Er3+ doped Ba0.65Sr0.35TiO3 ferroelectric oxide nanocrystals
Upconversion luminescence properties and mechanism of Er3+ doped Ba0.65Sr0.35TiO3 ferroelectric oxide nanocrystals
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Er3掺杂Ba0.65Sr0.35TiO3铁电氧化物纳米晶的上转换发光性能及机理
DOI:
10.1007/s11595-015-1132-7
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发表时间:
2015-04
期刊:
影响因子:
--
通讯作者:
汪竞阳
中科院分区:
文献类型:
--
作者:
汪竞阳
Ba0.65Sr0.35TiO3 (BST) nanocrystals doped with different concentrations of Er3+ ion were fabricated using sol-gel method. The structure and morphology of these BST nanocrystals were studied using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The X-ray diffraction patterns of all the nanocrystals prepared in the study correspond to polycrystalline perovskite BST structure. The blue and green upconversion luminescence properties of Er3+ doped BST nanocrystals were investigated under excitation by a 785-nm laser. The upconversion emission bands centered at 407, 523, and 547 nm can be attributed to 2H9/2, 4I15/2, 2H11/2, 4I15/2, and 4S3/2, 4I15/2 transitions of Er3+ ion, respectively. The upconversion mechanism was studied in detail, based on the laser power dependence of the upconverted emissions. In addition, we examined the dependence of the intensity of green upconverted luminescence on the doping concentration of Er3+ ions, and discussed the mechanism underlying the process.
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影响因子:
3.6
作者:
C. Y. Chen;R. R. Petrin-R.;D. Yeh;W. Sibley;J. Adam
通讯作者:
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1.1
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通讯作者:
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影响因子:
6.2
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