Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO24)
Publication date: 25th April 2024
Despite the rapid efficiency increase, tin halide perovskite solar cells lay significantly behind lead-based devices with the highest reported efficiency of 15.7 %. The main reason is attributed to the instability of Sn2+, which easily oxidizes to Sn4+ creating Sn vacancies and increasing the open-circuit voltage loss. In this work, we implemented tin thiocyanate (Sn(SCN)2) as an additive for passivating bulk defects of a germanium-doped tin halide perovskite film. The presence of additional Sn2+ and SCN- ions is expected to reduce Sn and iodine vacancies, leading to reduced non-radiative recombination and a longer charge-carrier dynamic. Moreover, Sn(SCN)2 is found to induce a higher film crystallinity in particular along the (100) and (200) planes. Finally, the passivated devices showed improved photovoltaic parameters with the best open-circuit voltage of 0.716 V, and the best efficiency of 12.22 %, compared to 0.647 V and 10.20 % for the reference device. In addition, the passivated solar cell retains 88.7 % of its initial efficiency after 80 minutes of illumination under 100 mW cm-2, which is substantially better than the control device which reaches 82.6 % of its initial power conversion efficiency after only 30 minutes. This work demonstrates the passivation potential of tin-based additives, which combined with other counterions give a relatively large space of choices for passivation of Sn-based perovskites.
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.