Proceedings of nanoGe Fall Meeting 2021 (NFM21)
DOI: https://doi.org/10.29363/nanoge.nfm.2021.130
Publication date: 23rd September 2021
Perovskite based on metal halide perovskites is a most promising material system for photovoltaics as well as for photodetectors. However, further advance demands improved device stability. Here we show the importance of perovskite composition and interface engineering by demonstrating long-term stable perovskite composites and devices. Most interestingly, the perovskite composite appears to be significantly more stable than the corresponding device, which is a strong argument that a major part of the instabilities are introduced from the interface. A high-throughput robotic approach is used to screen 160 mixed-cation mixed-halide perovskites based on several optical characterizations, such as UV-vis absorption and photoluminescence spectra. Such automated big data approaches allow to uniquely identify the most photo-thermal-stable perovskites under elevated temperature and illumination. Most interestingly, while several perovskite compositions are found to be stable against high temperatures of up to 85 C, the situation is more complex in working devices, as a stable device requires both - a stable semiconductor layer and stable interfaces. A p-type interface consisting of polymeric multilayers with variable doping is introduced as a most robust anode interface at elevated temperatures of 65 degrees Celsius, but still shows degradation at temperatures beyond 85 C. This work further introduces into the fundamentals how to accelerate the screening for stable perovskites layer and devices for long term operation.
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.