Remarkable Infrared Nonlinear Optical, Dielectric, and Strong Diamagnetic Characteristics of Semiconducting K₃[BiS₃]

Abstract

The ternary sulfido bismuthate K 3 [BiS 3 ] 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 −2 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 3 [BiS 3 ] 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 −4 m 3 kg −1 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 3 [BiS 3 ] provide insight into the correlation of optical, electrical, and magnetic properties.

Optical and Electrical Properties of A3[VS4] (A = Na, K) Synthesized via a Straightforward and Scalable Solid-State Method

“…Based on our previous works on (pseudo-)tetrahedral metalates with sulfide ligands, 24 we were interested in extending our synthesis strategy and subsequent analysis to 1 and 2 to investigate dielectric, electrochemical impedance, optical, and NLO properties.…”