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Multiband Monochromatic Upconversion Emissions of Lanthanide Codoped Monolayer MoS2 Nanosheets for Lighting Applications.
- Source :
- ACS Applied Nano Materials; 7/14/2023, Vol. 6 Issue 13, p11651-11660, 10p
- Publication Year :
- 2023
-
Abstract
- Upconversion materials have attracted much attention because of their broad application prospects in biomedicine and energy. Although various methods have been tried in nanoparticles and nanocrystals, it is still a challenge to realize monochromatic upconversion luminescence (UCL) in traditional lanthanide-doped materials. Two-dimensional transition metal chalcogenides (2D-TMDs) are a class of excellent luminescent semiconductors, offering a promising platform due to their chemical accessibility and physical sensitivity. However, multi-lanthanide doping, typically boosting the upconversion efficiency, has not been accomplished in monolayer TMD nanosheets. In this work, an optimized liquid precursor-assisted technique is designed to synthesize monolayer MoS<subscript>2</subscript> nanosheets embedded with Er/Yb and Er/Ho by surmounting the precipitation of Ln<superscript>3+</superscript>-doped precursors, which is confirmed by structural characterization. The monolayer MoS<subscript>2</subscript> can split the 4f configuration remarkably to produce diverse energy levels due to its strong Coulomb binding and spin–orbit coupling, as well as the unique asymmetric crystal field along the [001] direction. Hence, multiband monochromatic UCL from violet to near-infrared ranges was obtained on these codoped MoS<subscript>2</subscript> nanosheets. This work provides an effective way to tune the luminescence performance and wavelength of 2D-TMD nanosheets as well as a strategy for the design of UCL nanomaterials for light applications as nanophotonic devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 25740970
- Volume :
- 6
- Issue :
- 13
- Database :
- Complementary Index
- Journal :
- ACS Applied Nano Materials
- Publication Type :
- Academic Journal
- Accession number :
- 164958707
- Full Text :
- https://doi.org/10.1021/acsanm.3c01644