The article reports a catalyst-free, solution-phase synthesis method for CsPbX₃ (where X = Br, I) nanowires (NWs). These NWs are single crystalline with a uniform growth direction and crystallize in the orthorhombic phase. Both CsPbBr₃ and CsPbI₃ exhibit photoluminescence (PL) activity, with CsPbBr₃ showing strong photoluminescence and CsPbI₃ displaying a self-trapping effect. The study highlights the potential of these well-defined NWs as a platform for investigating fundamental properties and developing optoelectronic applications based on all-inorganic perovskites. The synthesis process involves reacting Cs-oleate with Pb-halide in the presence of oleic acid and oleylamine in octadecene at 150-250 °C. The formation mechanisms and morphological evolution of the NWs are analyzed, and the structural and optical properties are characterized using techniques such as HR-TEM, XRD, UV-Vis, and PL. The results suggest that these NWs could be useful for advancing research in nanoscale optoelectronics.The article reports a catalyst-free, solution-phase synthesis method for CsPbX₃ (where X = Br, I) nanowires (NWs). These NWs are single crystalline with a uniform growth direction and crystallize in the orthorhombic phase. Both CsPbBr₃ and CsPbI₃ exhibit photoluminescence (PL) activity, with CsPbBr₃ showing strong photoluminescence and CsPbI₃ displaying a self-trapping effect. The study highlights the potential of these well-defined NWs as a platform for investigating fundamental properties and developing optoelectronic applications based on all-inorganic perovskites. The synthesis process involves reacting Cs-oleate with Pb-halide in the presence of oleic acid and oleylamine in octadecene at 150-250 °C. The formation mechanisms and morphological evolution of the NWs are analyzed, and the structural and optical properties are characterized using techniques such as HR-TEM, XRD, UV-Vis, and PL. The results suggest that these NWs could be useful for advancing research in nanoscale optoelectronics.