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Peasecod‐Like Hollow Upconversion Nanocrystals with Excellent Optical Thermometric Performance
- Source :
- Advanced Science, Advanced Science, Vol 7, Iss 14, Pp n/a-n/a (2020)
- Publication Year :
- 2020
- Publisher :
- John Wiley and Sons Inc., 2020.
-
Abstract
- Trivalent lanthanide (Ln3+)‐doped hollow upconversion nanocrystals (UCNCs) usually exhibit unique optical performance that cannot be realized in their solid counterparts, and thus have been receiving tremendous interest from their fundamentals to diverse applications. However, all currently available Ln3+‐doped UCNCs are solid in appearance, the preparation of hollow UCNCs remains nearly untouched hitherto. Herein, a class of UCNCs based on Yb3+/Er3+‐doped tetralithium zirconium octafluoride (Li4ZrF8:Yb/Er) featuring 2D layered crystal lattice is reported, which makes the fabrication of hollow UCNCs with a peasecod‐like shape possible after Ln3+ doping. By employing the first‐principle calculations, the unique peasecod‐like hollow nanoarchitecture primarily associated with the hetero‐valence Yb3+/Er3+ doping into the 2D layered crystal lattice of Li4ZrF8 matrix is revealed. Benefiting from this hollow nanoarchitecture, the resulting Li4ZrF8:Yb/Er UCNCs exhibit an abnormal green upconversion luminescence in terms of the population ratio between two thermally coupled states (2H11/2 and 4S3/2) of Er3+ relative to their solid Li2ZrF6:Yb/Er counterparts, thereby allowing to prepare the first family of hollow Ln3+‐doped UCNCs as supersensitive luminescent nanothermometer with almost the widest temperature sensing range (123–800 K). These findings described here unambiguously pave a new way to fabricate hollow Ln3+‐doped UCNCs for numerous applications.<br />A class of peasecod‐like hollow Yb3+/Er3+‐doped Li4ZrF8 upconverting nanocrystals (UCNCs) that features a 2D layered crystal lattice is reported. Abnormal green upconverting luminescence that cannot be achieved in the solid UCNCs is observed in these peasecod‐like hollow UCNCs, thereby making them suitable as supersensitive nanothermometers with a wide temperature range for optical temperature sensing.
- Subjects :
- Lanthanide
Materials science
General Chemical Engineering
Population
Li4ZrF8
General Physics and Astronomy
Medicine (miscellaneous)
chemistry.chemical_element
02 engineering and technology
Crystal structure
010402 general chemistry
01 natural sciences
Biochemistry, Genetics and Molecular Biology (miscellaneous)
General Materials Science
education
lcsh:Science
nanothermometers
lanthanide ions
upconversion
education.field_of_study
Zirconium
Full Paper
business.industry
Doping
hollow nanocrystals
General Engineering
Full Papers
021001 nanoscience & nanotechnology
Photon upconversion
0104 chemical sciences
Nanocrystal
chemistry
Optoelectronics
lcsh:Q
0210 nano-technology
business
Luminescence
Subjects
Details
- Language :
- English
- ISSN :
- 21983844
- Volume :
- 7
- Issue :
- 14
- Database :
- OpenAIRE
- Journal :
- Advanced Science
- Accession number :
- edsair.doi.dedup.....7d331f29fc75d458441df28bc2d6876d