Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.154
Publication date: 22nd December 2022
2D perovskites have emerged as more stable analogues for photovoltaic applications as their 3D counterparts. However, in contrast to the free charge carriers in 3D perovskites, the confined space of the layered 2D perovskites leads to the formation of excitonic excited states. To harvest the energy of the excitonic excited state in a solar cell, transport of the excitons to charge-separating interfaces is required. Understanding the transport of excitons in 2D perovskites is therefore a crucial step for the development of perovskite photovoltaics containing 2D phases which benefit from both improved stability and maximized efficiency.
In this talk I will present our recent efforts to visualize exciton diffusion dynamics in a variety of 2D perovskite materials using Transient Photoluminescence Microscopy (TPLM). [1-4] TPLM combines diffraction limited excitation with time and spatially resolved detection of excitonic emission to reconstruct a movie-like representation of exciton transport with sub-nanosecond and few-nanometer resolution. Using this technique, a number of important structure-property relationships for exciton transport in 2D perovskites have been revealed, including the importance of lattice rigidity [1], the influence of trap states [3] and halide mixing [4], as well as the influence of doping strategies. I will highlight the importance of our use of Brownian dynamics simulations to explain the various anomalous transport regimes that can be encountered in these materials.
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.