期刊
DALTON TRANSACTIONS
卷 50, 期 44, 页码 16092-16098出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt02694a
关键词
-
资金
- National Science Foundation [DMR-2003118]
- Department of Chemistry at Wayne State University
- Lumigen Instrument Center (National Science Foundation) [MRI-1427926, 0216084, 2018587]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0216084, 2018587] Funding Source: National Science Foundation
A new synthetic route has been developed to access BaFBr nanocrystals and doped samples, displaying NIR-to-visible photon upconversion under 980 nm excitation. The temperature-sensitive green emission from Er3+ can be utilized for optical temperature sensing, indicating potential for the development of optical materials.
A new synthetic route to access pristine and rare-earth-doped BaFBr nanocrystals is described. Central to this route is an organic-inorganic hybrid precursor of formula Ba-5(CF2BrCOO)(10)(H2O)(7) that serves as a dual-halogen source. Thermolysis of this precursor in a mixture of high-boiling point organic solvents yields spherical BaFBr nanocrystals (approximate to 26 nm in diameter). Yb:Er:BaFBr nanocuboids (approximate to 20 nm in length) are obtained following the same route. Rare-earth-doped nanocrystals display NIR-to-visible photon upconversion under 980 nm excitation. The temperature-dependence of the green emission from Er3+ may be exploited for optical temperature sensing between 150 and 450 K, achieving a sensitivity of 11 x 10(-2) K-1 and a mean calculated temperature of 300.9 +/- 1.5 K at 300 K. The synthetic route presented herein not only enables access to unexplored upconverting materials but also, and more importantly, creates the opportunity to develop solution-processable photostimulable phosphors based on BaFBr.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据