Single Particle Microscopy & Spectroscopy of Morphology and Size Controlled Perovskite crystals: PEROVSKOPY

After seminal reports of their interesting physical properties (publishedin 2009 and 2012), an explosion of scientific interest into metal halide perovskites (MHPs) in the past decade has seen this family of materials emerge as the most exciting avenue for next-generation solar cells. The strong promise for MHP materials arise from their fundamental physics; from high absorption coefficients at visible wavelengths, long carrier diffusion lengths and small exciton binding energies, to its simple solution-based processing. Justifiably, an early surge of research activity was inspired by an empirical race to produce photovoltaic devices with ever-higher photo-conversion efficiencies. Consequently, early research saw perovskite engineering significantly outpace the understanding of their physical properties. In response, the focus of researchers is steadily shifting toward the intrinsic properties of perovskites, as these will define their performance in photonic applications. In this light, PEROVSKOPY aims at connecting the microstructure of perovskite crystals with their physical properties, by addressing three overarching goals: (1) Development of protocols for controlled and reproducible synthesis of a variety of highly crystalline, monodisperse and defectpoor perovskite; 2) development of new microscopy and spectroscopy modalities to unravel perovskite fundamental physics and 3) apply and select best performing materials in optoelectronic applications such as LEDs.