Publication date: 17th July 2025
Two-dimensional (2D) lead halide perovskites have emerged as promising materials for optoelectronic applications, particularly in achieving tuneable photoluminescence across the visible spectrum. Recent advances in precise dimensionality tuning have shown that controlled monolayer configurations of these materials can be engineered to achieve specific blue spectral emission, thereby expanding their utility in next-generation light-emitting devices. Understanding the excitonic features of these 2D materials is here crucial for optimizing their performance, and a theoretical framework using many-body perturbation theory provides a way to describe the interactions in these systems. Here, a Bethe-Salpeter equation approach provide the absolute energies of the electron and the hole, together with their mutual interactions. We employ a model Bethe-Salpeter equation (mBSE) with dielectric-dependent hybrid functionals to accurately model the excitonic properties of 2D lead halide perovskites and compare with optical response in 2D perovskites experimentally prepared in our laboratory. This approach incorporates a Coulomb kernel within the Fock exchange term, allowing us to capture the many-body effects inherent in the exciton dynamics. By leveraging a model dielectric function, we refine our results and achieve enhanced predictive capability regarding the theoretical optical properties of these materials with respect to the experimental values. Our findings confirm that manipulating dimensionality not only influences band structure in these low dimensional systems but also significantly alters the excitonic behaviour, underscoring the importance of using the appropriate level of theory to capture the experimental response when engineering efficient blue light-emitting devices based on 2D perovskites. This work paves the way for further exploration of 2D perovskites in various optoelectronic applications, positioning them as promising materials in the quest for high-performance, tuneable light sources.
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.