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Crystal‐Field Tuning of Photoluminescence in Two‐Dimensional Materials with Embedded Lanthanide Ions
Author(s) -
Xu Ding,
Chen Weiyin,
Zeng Mengqi,
Xue Haifeng,
Chen Yunxu,
Sang Xiahan,
Xiao Yao,
Zhang Tao,
Unocic Raymond R.,
Xiao Kai,
Fu Lei
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201711071
Subject(s) - photoluminescence , lanthanide , ion , materials science , crystal (programming language) , atomic orbital , crystal field theory , degenerate energy levels , field (mathematics) , energy level splitting , anisotropy , optoelectronics , chemical physics , nanotechnology , condensed matter physics , chemistry , optics , physics , computer science , electron , mathematics , organic chemistry , quantum mechanics , pure mathematics , programming language
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 MoS 2 single crystals were utilized as the host material to embed Eu 3+ 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 Eu 3+ 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.