Enhanced green upconversion luminescence in tetrahedral LiYF4:Yb/Er nanoparticles by manganese(II)-doping: the key role of the host lattice
文献类型：期刊论文
| 作者 | Zhai, TY; Gu ZJ(谷战军) ; Zhou, B; Xu, B; He, HM; Gu, ZJ; Tang, B; Ma, Y
|
| 刊名 | NANOSCALE
 |
| 出版日期 | 2018 |
| 卷号 | 10期号:6页码:2834-2840 |
| ISSN号 | 2040-3364 |
| DOI | 10.1039/c7nr07709b |
| 文献子类 | Article |
| 英文摘要 | We report the enhancement of green upconversion luminescence in tetrahedral LiYF4: Yb/Er nanoparticles by Mn2+ ion doping, which is different from the enhanced single-band red emission dominated by Mn2+ ions in cubic NaLnF(4): Yb/Er (Ln = Y, Gd, Lu) nanoparticles. The energy levels of the first excited state T-4(1) of Mn2+ in tetrahedral LiYF4: Gd and cubic NaGd(Y) F-4 are compared by detection of emissions from Mn2+ via the energy transition from Gd3+ to Mn2+ with excitation at 275 nm. The coordination environments of Mn2+ in these two host lattices have been investigated by X-ray absorption fine structure measurements. The results demonstrate that the formation of tetrahedral MnF4 in tetragonal LiYF4 arising from the replacement of Ln(3+) ions with Mn2+ ions leads to a higher energy level of the Mn2+ T-4(1) state than that in octahedral MnF6 in cubic NaYF4. The high-lying excited state of tetrahedral MnF4 is close to the green emitting S-4(3/2) state of Er3+ and thus enhances green upconversion emission in tetragonal LiYF4: Yb/Er, while the low-lying excited state of octahedral MnF6 dominates red emission in cubic NaYF4: Yb/Er. These findings provide direct evidence for the key roles of the host lattices and more possibilities in modulating the upconversion behaviour of lanthanide-based nanoparticles by transition-metal ion doping to achieve the desired goals of specific applications. |
| 电子版国际标准刊号 | 2040-3372 |
| WOS关键词 | NANOCRYSTALS ; FLUORESCENCE ; PHASE ; IONS ; EMISSION ; LIGHT |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000424694400020 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285630]  |
| 专题 | 中国科学院高能物理研究所_中国散裂中子源 高能物理研究所_实验物理中心 高能物理研究所_多学科研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Zhai, TY,Gu ZJ,Zhou, B,et al. Enhanced green upconversion luminescence in tetrahedral LiYF4:Yb/Er nanoparticles by manganese(II)-doping: the key role of the host lattice[J]. NANOSCALE,2018,10(6):2834-2840. |
| APA | Zhai, TY.,谷战军.,Zhou, B.,Xu, B.,He, HM.,...&Ma, Y.(2018).Enhanced green upconversion luminescence in tetrahedral LiYF4:Yb/Er nanoparticles by manganese(II)-doping: the key role of the host lattice.NANOSCALE,10(6),2834-2840. |
| MLA | Zhai, TY,et al."Enhanced green upconversion luminescence in tetrahedral LiYF4:Yb/Er nanoparticles by manganese(II)-doping: the key role of the host lattice".NANOSCALE 10.6(2018):2834-2840. |
入库方式： OAI收割
来源：高能物理研究所
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