Infrared Transparent and Electromagnetic Shielding Correlated Metals via Lattice-Orbital-Charge Coupling.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 35939658.
- Also identified by DOI 10.1021/acs.nanolett.2c01487.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Despite being a requisite for modern transparent electronics, few metals have a sufficiently high infrared transmittance due to the free electron response. Here, upon alloying the correlated metal SrVO<sub>3</sub> with BaVO<sub>3</sub>, the medium wavelength infrared transmittance at a wavelength of 4 μm is found to be 50% higher than those for Sn-doped In<sub>2</sub>O<sub>3</sub> (ITO) and La-doped BaSnO<sub>3</sub> (BLSO). The room temperature resistivity of the alloy of ∼100 μΩ cm is 1 order of magnitude lower than those of ITO and BLSO, guaranteeing a profound electromagnetic shielding effectiveness of 22-31 dB at 10 GHz in the X-band. Systematic investigations reveal symmetry breaking of VO<sub>6</sub> oxygen octahedra in SrVO<sub>3</sub> due to the substitution of Sr<sup>2+</sup> with larger Ba<sup>2+</sup> ions, localization of electrons in the lower energy V-<i>d</i><sub><i>yz</i></sub> and <i>d</i><sub><i>zx</i></sub> orbitals, and stronger correlation effects. The lattice-orbital-charge-coupled engineering of the electronic band structure in correlated metals offers a new design strategy to create super-broad-band transparent conductors with an enhanced shielding capability.