Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.452
Publication date: 18th December 2023
Optical studies of colloidal CdSe nanoplatelets at cryogenic temperatures (typically 1.7–4 K) and in high magnetic fields (typically above 10 T) provide valuable information about their emission properties. Importantly, magnetooptics allows for distinguishing the emission from excitons and trions (charged excitons). These particles have very different photoluminescence kinetics, additionally, their emission lifetimes are affected differently by magnetic fields and temperatures [1]. The exciton fine structure can be visualized by time-resolved polarized photoluminescence and fluorescence line narrowing, and exciton binding energy can be obtained by measuring one- and two-photon absorption [2]. The trion charge, positive or negative, can be identified by studying the photoluminescence polarization in magnetic fields [1].
Interestingly, the surface spins in CdSe nanoplatelets at cryogenic temperatures can be detected by optical techniques [3]. In applied magnetic field, the surface spins orientation results in large Zeeman splitting for the exciton interacting with these spins, similar to the known effect of the giant Zeeman splitting in diluted magnetic semiconductors, like (Cd,Mn)Se. The circular polarization degree about 50% in a magnetic field of 3 T is observed in bare CdSe nanoplatelets.
Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - project No.: 462009643
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.