Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP27)
Publication date: 22nd October 2026
Formamidinium lead iodide (FAPbI3) perovskites are promising absorbers for lightweight, radiation-tolerant space photovoltaics. In addition, controlling the shape and surface of their quantum dots (QDs) offers a route to tailoring their optical properties. In conventional hot-injection synthesis, oleylammonium preferentially stabilizes the nonpolar {100} facets, yielding cube-shaped QDs, whereas facets rich in undercoordinated Pb2+ are rarely exposed. Here, the zwitterionic ligand 3-(decyldimethylammonio)propanesulfonate (DPSI) can be used to control the facet growth of FAPbI₃ QDs by passivating undercoordinated Pb2+ through its sulfonate group. DPSI was heat-treated with PbI2 before oleic acid and oleylamine were injected. Transmission electron microscopy (TEM) showed that pristine FAPbI3 QDs had a uniform cubic morphology, whereas non-cubic morphologies were also observed in DPSI-FAPbI₃ QDs. X-ray diffraction revealed additional (012) reflections and a broader (001) peak, with no detectable δ-phase. Both the absorption and photoluminescence (PL) spectra of DPSI-FAPbI3 QDs were blue-shifted relative to those of pristine QDs. The PL quantum yield remained comparable to that of pristine QDs (51% vs. 56%), whereas the average PL lifetime decreased from 72 to 29 ns, corresponding to 2.5-fold increase. We attribute this to stronger carrier confinement in the (012)-faceted QDs, which increases both electron–hole overlap and carrier access to surface sites. These results indicate that zwitterionic ligands can be used to tune the morphology and radiative dynamics of FAPbI3 QDs.
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.