[ASAP] Temperature-Dependent Structural and Optical Properties of CsGeI3

AI Insight

The article investigates the structural and optical properties of cesium germanium triiodide (CsGeI3), a lead-free halide perovskite, as a function of temperature. The study characterizes how the crystal structure undergoes phase transitions across different temperature ranges and how these structural changes influence the material's optical behavior, including its bandgap and light absorption characteristics. These findings provide insight into the relationship between lattice dynamics and optoelectronic properties in germanium-based perovskites.

Why it matters

CsGeI3 is a candidate material for lead-free perovskite solar cells, and understanding its temperature-dependent behavior is critical for assessing its stability and performance under real-world operating conditions. This research supports the development of less toxic alternatives to lead-based perovskites for photovoltaic and optoelectronic applications.