Publication date: 15th December 2025
Narrow-bandgap tin and mixed Sn–Pb halide perovskites attract growing interest for optoelectronic applications, yet their development is limited by irreproducible and poorly understood crystallization. Although additive engineering has effectively improved film formation, the fundamental origins of their distinct crystallization behavior remain unclear. Here, we uncover the unique reactivity and colloidal chemistry of Sn-based perovskite precursor solutions through a direct comparison with Pb analogues. By combining NMR and SAXS, we achieve detailed structural and dynamical insight into these solutions. Our results show that Sn-based precursor solutions exhibit inherently higher reactivity than Pb, and higher sensitivity to the environment and composition. We propose that this behavior stems from reduced electrostatic repulsion within the electric double-layer, which leads to less stable colloidal networks and a stronger tendency for particle agglomeration. [1] These insights provide a mechanistic basis that supports observations reported in recent studies [2,3] and highlight the opportunities of solvent engineering to finally overcome the longstanding limitations in Sn perovskite thin-film fabrication.
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.