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Crystal鈥怓ield Tuning of Photoluminescence in Two鈥怐imensional Materials with Embedded Lanthanide Ions

Publication Type
Journal
Journal Name
Angewandte Chemie International Edition
Publication Date
Page Numbers
763 to 767
Volume
130
Issue
3

Lanthanide (Ln) group elements have been attracting considerable attention owing to the distinct optical properties. The crystal鈥恌ield 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鈥恖evel 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鈥恠hift 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.