Infrared Transparent and Electromagnetic Shielding Correlated Metals via Lattice-Orbital-Charge Coupling

• DOI: 10.1021/acs.nanolett.2c01487
• Publication Date: 2022-08-08T19:15:56Z
• Authors: Youngkyoung Ha; Jinho Byun; Jaekwang Lee; Jaeseok Son; Younghak Kim; Shinbuhm Lee
• Keywords: S1-xBaxVO3; Correlated transparent conductors; medium wavelength infrared transmittance; 02 engineering and technology; OXIDES; high electromagnetic shielding effectiveness; FILMS; 0210 nano-technology; 530; lattice-orbital-charge coupling; 620

Despite being a requisite for modern transparent electronics, few metals have sufficiently high infrared transmittance due to the free electron response. Here, upon alloying correlated metal SrVO3 with BaVO3, medium wavelength at of 4 μm is found be 50% higher than those Sn-doped In2O3 (ITO) and La-doped BaSnO3 (BLSO). The room temperature resistivity alloy ∼100 μΩ cm 1 order magnitude lower ITO BLSO, guaranteeing profound electromagnetic shielding effectiveness 22–31 dB 10 GHz in X-band. Systematic investigations reveal symmetry breaking VO6 oxygen octahedra substitution Sr2+ larger Ba2+ ions, localization electrons energy V-dyz dzx orbitals, stronger correlation effects. lattice-orbital-charge-coupled engineering electronic band structure offers new design strategy create super-broad-band conductors an enhanced capability.