Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
DOI: https://doi.org/10.29363/nanoge.nfm.2022.081
Publication date: 11th July 2022
Over the past few years, mixed Sn-Pb perovskites came to the fore as promising absorbing materials for single- and multi-junction solar cells due to the possibility of manipulating the bandgap by changing the Sn to Pb ratio [1]. However, the opto-electronic properties of tin-containing perovskites are adversely affected by intrinsic and extrinsic factors leading to doping [2][3]. In this work, we produced different Sn-Pb perovskites thin-films of composition Cs0.25FA0.75SnxPb1-xI3 with varying tin content between x=0 and x=0.6 via antisolvent spin-coating. In order to improve the properties of the perovskite layers, 20 mol% SnF2 was added to the tin precursor solution. We studied the effect of light on the background conductivity by means of microwave conductivity techniques. In particular, we looked at the light-induced carge-carriers dynamics before and after exposing the perovskite thin-films to AM1.5 illumination. For the pristine layers, we found charge-carriers mobilities reaching μ ~ 25 cm2/V·s and lifetimes t > 1 μs, which are only marginally dependent on the Sn to Pb ratio. Exposure to external factors, such as ambient air, leads to a severe increase in background conductivity and shortened charge-carriers lifetimes. Lastly, a potential explanation of the degradation mechanism is proposed on basis of defect chemistry.
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.