Publication date: 21st July 2025
Metal halide perovskite solar cells have recently achieved an efficiency breakthrough of 26.7%, surpassing that of monocrystalline silicon photovoltaics. This remarkable result was only possible due to precise control and engineering of morphology, interfaces, defects, the use of multiple cations at the perovskite A-site, such as Cs⁺, MA⁺ (methylammonium), FA⁺ (formamidinium), and the incorporation of additives to enhance crystallization, among other strategies.
The dimensionality of perovskite materials can be readily tuned by selecting appropriate A-site cations and adjusting the stoichiometry, enabling the formation of structures ranging from zero-dimensional (0D), one-dimensional (1D), two-dimensional (2D), to three-dimensional (3D). This tunability broadens the applicability of perovskites in a wide range of optoelectronic devices.
In this presentation, we summarize key results obtained through in situ experiments that probe the formation dynamics and crystallization of 2D perovskite materials incorporating various organic cations, along with their stability profiles. The dynamics of structure and interface formation in solution or solid state, and their thermal stability and aggregation behavior were investigated via in situ techniques. These included time-resolved grazing incidence wide-angle X-ray scattering (GIWAXS), high-resolution XRD, in situ TEM, and in situ photoluminescence (PL) spectroscopy, conducted at the Brazilian Synchrotron Light Laboratory, Lawrence Berkeley National Laboratory, and other research facilities.
Additionally, we present our most recent findings on the spatial mapping of 2D nanostructures using cathodoluminescence coupled with scanning electron microscopy (SEM), as well as the role of organic cation chain length in crystallization dynamics, defect passivation, and carrier transport. These properties were probed using advanced characterization techniques such as nanoscale X-ray diffraction and AFM-based infrared spectroscopy.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.