The 5d level positions of the trivalent lanthanides in inorganic compounds

Information on the energy that is needed to transfer an electron from the valence band of an inorganic compound to a trivalent lanthanide impurity is presented. The energy is a measure of the location of the ground state of the divalent lanthanide relative to the top of the valence band. A variation with type of lanthanide is found that is the same irrespective of the type of compound (fluorides, chlorides, bromides, iodides, oxides, sulfides). The variation is anti-correlated with the known variation in fd transition energies in divalent lanthanides. Because of the anti-correlation, the energy difference between the first 4fn−15d state and the bottom of the conduction band is relatively invariant with type of lanthanide ion. The difference is largest for Eu2+, and decreases gradually towards the end of the lanthanide series by 0.5 eV for Y b2+. Based on the systematic variation in charge transfer energy and fd energy, a three-parameter model is presented to position the energy levels for each divalent lanthanide relative to valence and conduction band states. Using a similar model the levels of trivalent lanthanides are positioned.

https://iopscience.iop.org/article/10.1088/0953-8984/15/49/018/pdf

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Jiwen Li

Papers

Luminescence of several rare-earth ions in laoi

Supramolecular engineering of Nacre-inspired Bio-based nanocomposite coatings with exceptional ductility and high-efficient self-repair ability

Simple synthesis of Ag nanoparticles /Cu2O cube photocatalyst at room temperature: efficient electron transfer improves photocatalytic performance

Surface etching and photodeposition nanostructures core-shell Cu2O@CuO(Ni)-Ag with S-scheme heterojunction for high efficiency photocatalysis

Enhanced anti-icing and anticorrosion properties of nano-SiO2 composite superhydrophobic coating constructed by a large-scale micropillar array approach