Proceedings of nanoGe Fall Meeting 2021 (NFM21)
DOI: https://doi.org/10.29363/nanoge.nfm.2021.013
Publication date: 23rd September 2021
Organic-inorganic halide perovskites are record-breaking materials with a wide range of applications spanning photovoltaics, lighting, and detectors. These hybrid materials combine key properties of traditional inorganic semiconductors such as high carrier mobilities, with properties of organic semiconductors such as facile and low-cost synthesis. Single perovskites with stoichiometry ABX3 like the prototypical solar cell absorber CH3NH3PbI3 (MAPI) have excellent optoelectronic properties, but are hampered by instability, the toxicity of lead and scarcity of iodine. Furthermore, the ABX3 structural motif limits functionalization because only very few organic molecules fit into the A site cavity. New hybrid materials with alternative perovskite-like structural motifs vastly extend the chemical and structural diversity of this family of materials resulting in unusual and widely tuneable optoelectronic properties.
In this contribution I will demonstrate that it is the chemical and structural heterogeneity of such hybrid materials that determines their electronic and excited state properties. I will showcase first principles calculations - based on density functional theory and many-body perturbation theory - of several perovskite-type materials with optoelectronic properties significantly deviating from those of MAPI. Our calculations allow us to explore the atomistic origin of the unusual excited state properties of these materials and suggest routes for tuning them for tailored applications.
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.