Towards Stable Binary Hybrid Perovskite Glasses: a Combined Long- and Short-Range Order Structural Study

Hybrid perovskite glasses are a new class of non-crystalline materials formed by melt-quenching crystalline two-dimensional hybrid organic-inorganic perovskites (2D-HOIPs). These materials have the potential for next-generation applications such as optoelectronics, thermoelectrics, and sensing, however, they are unstable, and reverting to their crystalline phase over time or with mild heating. Preliminary research shows that liquid-phase blending can stabilize these glasses, creating binary HOIP glasses. Here, we propose using synchrotron-based methods to fully characterize the structure of these blends. By employing high-resolution powder X-ray diffraction (HR-PXRD) and total scattering measurements to acquire pair distribution functions (PDFs), we will study both the crystalline and glassy forms at various temperatures. This research aims to provide insights into the structural changes during glass formation and their effect on thermal stability and optical properties.