Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.104
Publication date: 18th July 2023
Mixed lead-tin (Pb:Sn) halide perovskites are promising absorbers with narrow bandgaps (1.2-1.3 eV) suitable for high-efficiency all-perovskite tandem solar cells. Currently, the highest efficiency Pb:Sn perovskite solar cells (PSCs) employ methylammonium (MA) as an A-site cation. However, MA is known to be thermally and chemically less stable than formamidinium (FA), therefore it would be favourable to have an MA-free Pb:Sn PSCs that could also deliver high efficiency. Additionally, the solution processing of thick Pb:Sn perovskite films is notoriously difficult in comparison with their neat-Pb counterparts. This is partly due to the rapid crystallization of Sn-based perovskites, resulting in films that have a high degree of roughness. It is more difficult to coat conformal subsequent layers using solution-based techniques on top of rougher films, leading to contact between the absorber and the top metal electrode in completed devices, resulting in a loss of VOC, fill factor, efficiency and stability. Here, we investigate the impact of adding a non-continuous thin layer of alumina nanoparticles inserted in between the thick, rough Pb:Sn perovskite films and the electron transport layers (ETL) in a 'p-i-n' device configuration. This approach leads to enhanced conformality of the subsequent ETL. As a result, devices that employ the thin alumina nanoparticles layer achieved a champion maximum power point tracked efficiency of 15.0% versus 10.3% for the champion control device and the steady-state open-circuit voltage was improved from 0.65 V to 0.75 V. Application of the alumina nanoparticles as an interfacial buffer layer also results in highly reproducible Pb:Sn solar cell devices whilst simultaneously improving device stability at 65 °C under 1 sun illumination. Aged devices showed a 6‑fold improvement in stability over pristine Pb:Sn devices, increasing their lifetime to 120 hours.
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.