Photoresponsive Charge-Lattice Interplay in Layered Lead-Free Cs₃Sb₂Cl₉ Perovskite Crystals.

ABSTRACT: The search for stable, nontoxic alternatives to lead-based halide perovskites has directed significant attention toward the Cs₃Sb₂Cl₉ compound, a promising lead-free material with a layered crystal structure. In this study, we comprehensively investigate the structural, thermal, optical, vibrational, and electrical properties of high-quality Cs₃Sb₂Cl₉ single crystals. X-ray diffraction (XRD) analysis confirms the formation of a well-crystallized trigonal phase (P-3m1), with lattice parameters consistent with prior reports. Thermogravimetric analysis (TGA) reveals thermal stability up to 321 °C. Optical absorption measurements reveal an indirect bandgap of 2.76 eV and an Urbach energy of 0.37 eV, indicating moderate static di

SUBMITTER: Bouzidi M 

PROVIDER: S-EPMC12917650 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature