TY - EJOU AU - Rzayeva, A. B. AU - Abbdullayeva, F. E. AU - Imanova, S. C. AU - Aliyeva, S. H. AU - Yasinova, S. N. TI - Hydrothermal Synthesis of Lead Indium Selenide T2 - Chalcogenide Letters PY - 2025 VL - 22 IS - 11 SN - 1584-8663 AB - Lead indium selenide (PbIn2Se₄) is a promising chalcogenide semiconductor for optoelectronic and energy applications. We report a hydrothermal synthesis route using ethylene glycol under moderate conditions (433– 453 K, 7–12 h), yielding up to 85–87%. The product crystallized into a cotton-like morphology composed of nanoand microparticles. Structural and compositional integrity were confirmed by chemical analysis, thermogravimetric analysis, and transmission electron microscopy. These results demonstrate that hydrothermal synthesis provides an efficient and controllable pathway to high-purity PbIn2Se₄, opening opportunities for its use in advanced functional devices. KW - Thermogravimetric analysis (TGA); lead chalcogenide; hydrothermal method; chemical analysis; thermographic analysis; nano- and microparticles DO - 10.15251/CL.2025.2211.965