Proceedings of nanoGe Spring Meeting 2022 (NSM22)
DOI: https://doi.org/10.29363/nanoge.nsm.2022.067
Publication date: 7th February 2022
Hybrid tin halide perovskite solar cells stand as the most promising alternative to their toxic lead-based counterparts, although addressing their poor ambient stability remains as the main challenge to make this technology competitive. Hence, detailed knowledge of their chemical degradation pathways is essential to mitigate their decomposition. This talk will cover our recent findings on the degradation mechanism of tin perovskite thin films (i.e. (PEA)0.2(FA)0.8SnI3, where PEA is phenylethylammonium and FA is formamidinium) via a combination of spectroscopy, diffraction and ab initio simulation techniques [1]. We find that SnI4, a product that forms as a result of the oxygen-mediated decomposition of perovskite, reacts further to form iodine via the combined action of atmospheric water and oxygen. Iodine is then shown to be a highly aggressive species that rapidly leads to further perovskite degradation to give more SnI4, establishing a cyclic degradation mechanism. We then find the ambient stability of tin perovskite films to be highly dependent on the hole transport layer chosen as the substrate, which is used to tackle the oxidative degradation of the material and increase its ambient stability. We expect the findings presented herein to provide key design rules towards stable, lead-free tin perovskite solar cells.
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.