Ghazanfari Mohammad R, Vittadello Laura, Al-Sabbagh Dominik, Santhosh Archa, Frankcom Charlie, Fuß Friederike, von Randow Clara A, Siemensmeyer Konrad, Vrijmoed Johannes C, Emmerling Franziska, Jerabek Paul, Imlau Mirco, Thiele Günther
Fachbereich Biologie, Chemie und Pharmazie, Institut für Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195 Berlin, Germany.
School of Physics, Osnabrück University, Barbarastraße 7, 49076 Osnabrück, Germany.
J Phys Chem Lett. 2022 Aug 4;13(30):6987-6993. doi: 10.1021/acs.jpclett.2c01689. Epub 2022 Jul 27.
The ternary sulfido bismuthate K[BiS] is synthesized in quantitative yields. The material exhibits nonlinear optical properties with strong second harmonic generation properties at arbitrary wavelengths in the infrared spectral range and a notable laser-induced damage threshold of 5.22 GW cm for pulsed laser radiation at a wavelength of 1040 nm, a pulse duration of 180 fs, and a repetition rate of 12.5 kHz. K[BiS] indicates semiconductivity with a direct optical band gap of 2.51 eV. Dielectric and impedance characterizations demonstrate κ values in the range of 6-13 at 1 kHz and a high electrical resistivity. A strong diamagnetic behavior with a susceptibility of -2.73 × 10 m kg at room temperature is observed. These results suggest it is a promising nonlinear optical candidate for the infrared region. The synergic physical characteristics of K[BiS] provide insight into the correlation of optical, electrical, and magnetic properties.
