Crystal-Field Tuning of Photoluminescence in Two-Dimensional Materials with Embedded Lanthanide Ions

Ding Xu; Weiyin Chen; Mengqi Zeng; Haifeng Xue; Yunxu Chen; Xiahan Sang; Yao Xiao; Tao Zhang; Raymond R. Unocic; Kai Xiao; Lei Fu

doi:10.1002/anie.201711071

Crystal-Field Tuning of Photoluminescence in Two-Dimensional Materials with Embedded Lanthanide Ions

Ding Xu, Weiyin Chen, Mengqi Zeng, Haifeng Xue, Yunxu Chen, Xiahan Sang, Yao Xiao, Tao Zhang, Raymond R. Unocic, Kai Xiao, Lei Fu

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

Lanthanide (Ln) group elements have been attracting considerable attention owing to the distinct optical properties. The crystal-field surroundings of Ln ions in the host materials can determine their energy level splitting, which is of vital importance to tailor their optical properties. 2D MoS₂ single crystals were utilized as the host material to embed Eu³⁺ and energy-level splitting was achieved for tuning its photoluminescence (PL). The high anisotropy of the 2D host materials makes them distort the degenerate orbitals of the Ln ions more efficiently than the symmetrical bulk host materials. A significant red-shift of the PL peak for Eu³⁺ was observed. The strategy for tailoring the energy level splitting of Ln ions by the highly designable 2D material crystal field provides a new method to extend their optical properties.

Original language	English
Pages (from-to)	755-759
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	57
Issue number	3
DOIs	https://doi.org/10.1002/anie.201711071
State	Published - Jan 15 2018

Funding

The research was supported by the Natural Science Foundation of China (Grants 21473124, 21673161). STEM characterization was conducted at the Center for Nanophase Materials Sciences (CNMS), which is a DOE Office of Science User Facility.

Funders	Funder number
National Natural Science Foundation of China	21473124, 21673161

Keywords

2D materials
MASR-CVD
crystal-field splitting
lanthanide ions
photoluminescence tuning

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title = "Crystal-Field Tuning of Photoluminescence in Two-Dimensional Materials with Embedded Lanthanide Ions",

abstract = "Lanthanide (Ln) group elements have been attracting considerable attention owing to the distinct optical properties. The crystal-field surroundings of Ln ions in the host materials can determine their energy level splitting, which is of vital importance to tailor their optical properties. 2D MoS2 single crystals were utilized as the host material to embed Eu3+ and energy-level splitting was achieved for tuning its photoluminescence (PL). The high anisotropy of the 2D host materials makes them distort the degenerate orbitals of the Ln ions more efficiently than the symmetrical bulk host materials. A significant red-shift of the PL peak for Eu3+ was observed. The strategy for tailoring the energy level splitting of Ln ions by the highly designable 2D material crystal field provides a new method to extend their optical properties.",

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AU - Xu, Ding

AU - Chen, Weiyin

AU - Zeng, Mengqi

AU - Xue, Haifeng

AU - Chen, Yunxu

AU - Sang, Xiahan

AU - Xiao, Yao

AU - Zhang, Tao

AU - Unocic, Raymond R.

AU - Xiao, Kai

AU - Fu, Lei

PY - 2018/1/15

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N2 - Lanthanide (Ln) group elements have been attracting considerable attention owing to the distinct optical properties. The crystal-field surroundings of Ln ions in the host materials can determine their energy level splitting, which is of vital importance to tailor their optical properties. 2D MoS2 single crystals were utilized as the host material to embed Eu3+ and energy-level splitting was achieved for tuning its photoluminescence (PL). The high anisotropy of the 2D host materials makes them distort the degenerate orbitals of the Ln ions more efficiently than the symmetrical bulk host materials. A significant red-shift of the PL peak for Eu3+ was observed. The strategy for tailoring the energy level splitting of Ln ions by the highly designable 2D material crystal field provides a new method to extend their optical properties.

AB - Lanthanide (Ln) group elements have been attracting considerable attention owing to the distinct optical properties. The crystal-field surroundings of Ln ions in the host materials can determine their energy level splitting, which is of vital importance to tailor their optical properties. 2D MoS2 single crystals were utilized as the host material to embed Eu3+ and energy-level splitting was achieved for tuning its photoluminescence (PL). The high anisotropy of the 2D host materials makes them distort the degenerate orbitals of the Ln ions more efficiently than the symmetrical bulk host materials. A significant red-shift of the PL peak for Eu3+ was observed. The strategy for tailoring the energy level splitting of Ln ions by the highly designable 2D material crystal field provides a new method to extend their optical properties.

KW - 2D materials

KW - MASR-CVD

KW - crystal-field splitting

KW - lanthanide ions

KW - photoluminescence tuning

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Crystal-Field Tuning of Photoluminescence in Two-Dimensional Materials with Embedded Lanthanide Ions

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