Publication date: 15th December 2025
Elaborate chemical synthesis methods enable the production of various types of inorganic nanocrystals (NCs) with uniform shapes and size distributions. However, how can we synthesize NCs with thermodynamically metastable phases or highly complex structures? Transforming pre-synthesized NCs through elemental substitutions—such as ion-exchange reactions for ionic NCs [1–4] and galvanic replacement reactions for metallic NCs—can overcome the limitations of conventional one-step syntheses. In particular, ion-exchange reactions have been extensively studied using numerous combinations of foreign ions and ionic NCs of various shapes. The optical properties of the resulting ionic NCs and their assemblies can be readily tuned over a wide range [5]. Here, we focus on full and partial ion-exchange reactions of ionic NCs and their assemblies, emphasizing key aspects such as the preservation of morphology and dimensions [2,3,6,7]. Finally, we discuss the formation of unprecedented Z3-type FePd₃ NCs by substituting a small amount of Pd with In, based on the interelement miscibility among Fe, Pd, and In [8–10].
This work was financially supported by the Japan Science and Technology Agency (JST)– Core Research for Evolutionary Science and Technology (CREST) (Grant No. JPMJCR21B4) and Japan Society for the Promotion of Science (JSPS) KAKENHI for Scientific Research S (Grant No. JP24H00053).
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.