Publication date: 22nd July 2026
The rapid growth of artificial intelligence demands new computing hardware capable of overcoming the energy and data-transfer limitations of conventional von Neumann architectures. Memristive devices based on mixed ionic-electronic materials have emerged as promising candidates for neuromorphic and in-memory computing by simultaneously storing and processing information. Among them, halide perovskites offer unique advantages owing to their low ion migration barriers, tunable optoelectronic properties, and solution-processability. However, the instability and toxicity of lead-based perovskites remain major obstacles for practical implementation.[1] Therefore, we develop lead-free two-dimensional halide layered double perovskites (LDPs) as a new platform for memristive and neuromorphic devices. The materials are based on Ruddlesden-Popper (BNA)4AgBiX8) and Dion-Jacobson (PDMA)2AgBiX8 (X = I or Br, BNA = benzylammonoium, PDMA = 1,4-phenyldimethylammonium) compositions synthesized through a combined mechanochemical and solution-processing strategy, enabling phase-pure thin films with controlled crystallization and orientation.[2] The influence of supramolecular spacer design, halide composition, and film processing on structural, optical, and electrical properties will be discussed.[3] The LDPs are integrated into three complementary device platforms: asymmetric metal-insulator-metal (MIM) memristors, photovoltaic full-stack devices, and crossbar architectures. The MIM devices exhibit filamentary resistive switching governed by Ag migration and halide-vacancy dynamics, delivering high ON/OFF ratio along with reliable endurance and retention. The photovoltaic-inspired full-stack architecture further demonstrates the possibility of self-powered memristive operation, where the built-in electric field assists ionic transport and switching while electron- and hole-transport layers regulate carrier injection, suppress leakage currents, and improve switching linearity and energy efficiency.[4] Finally, crossbar devices exhibit artificial synaptic behaviors, representing a significant advancement in the development of environmentally benign memristive materials and providing a versatile platform for next-generation low-power neuromorphic hardware and self-powered artificial intelligence systems.
M.G., P.K., and J.V.M. appreciate the support from the Research Council of Finland (Project No. 362642). M.R.G. and J.V.M. were supported by the European Research Council (ERC) under the European Union’s Horizon research and innovation programme (Grant agreement No.101114653,SmartHyMat). M.R.G. and H.M.U. acknowledge SUSMAT Bluesky University of Turku grant (project no. 26004782).
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.