Proceedings of nanoGe Spring Meeting 2022 (NSM22)
DOI: https://doi.org/10.29363/nanoge.nsm.2022.160
Publication date: 7th February 2022
A common strategy for downshifting luminescence is based on a trivalent lanthanide (Ln3+) ion as emission center and a sensitizer as light absorption center. Lead halide perovskites can be used as sensitizer to meet the demands for downshifting applications. However, perovskite sensitizers suffer from low visible absorption, poor stability, and toxicity. In this study, we demonstrate a downshifting configuration based on lead-free cesium manganese bromide nanocrystals enabling efficient transfer of high energy absorbed photons to the low energy emission centers in the near-infrared spectral region. For that, we obtained phase-pure CsMnBr3 and Cs3MnBr5 nanocrystals via a controlled synthesis and successfully doped them with Er3+, Yb3+, Tm3+ and Nd3+. The correlation of the CsMnBr3 broadband visible absorption to the lanthanides emission was confirmed with steady-state excitation spectra and time-resolved photoluminescence measurements. This work provides a lead-free material as an efficient sensitizer, which can help to develop and design visible to NIR downshifters.
We acknowledge support from the European research council project NANOLED (ERC-StG 851794).
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.