Proceedings of Online Meetup: Origins of Electronic Defects in Halide Perovskites (EDHP)
Publication date: 1st April 2020
Lead halide perovskites have shown outstanding properties when applied in optoelectronic devices, such as solar cells and light-emitting diodes. Nevertheless, the presence of highly-toxic lead together with their low environmental stability might become a bottleneck for their commercialization. Herein we present different inorganic halides based on non-toxic metals with potential application in optoelectronics. Cu(I)-based fully inorganic ternary metal halides are particularly promising, especially for applications in light-emitting diodes (LEDs). Blue, highly luminescent materials (required for the fabrication of white light-emitting diodes) are commonly more challenging to obtain than red or green emitters, due to the increased probability of non-radiative recombination. They present the general formula Cs3Cu2X5 (X = Cl, Br, I, and mixtures thereof). Cs3Cu2I5 has been identified as the most promising material, as it maintains blue luminescence with photoluminescence quantum yield exceeding 40% even after being exposed to air for several days. Importantly, we employed a dry mechanochemical synthesis which avoids the use of solvents and high temperatures and allows the preparation of phase-pure compounds. Homogeneous Cs3Cu2I5 thin-films were also fabricated by single-source vacuum deposition (SSVD) employing the pre-synthesized luminescent compounds. The emission spectrum and crystallinity is maintained in thin films, even without any further post-deposition treatment.
The research leading to these results has received funding from the European Union Programme for Research and Innovation Horizon 2020 (2014-2020) under the Marie Skłodowska-Curie Grant Agreement PerovSAMs No. 747599), the Spanish Ministry of Science, Innovation and Universities (ex-MINECO) via the Unidad de Excelencia Marı ́a de Maeztu MDM-2015-0538, MAT2017- 88821-R, and PCIN-2015-255, and the Generalitat Valenciana (Prometeo/2016/135). P.S thanks the Spanish Ministry of Education, Culture and Sport for her FPU pre-doctoral grant. M.S. thanks the Spanish Ministry of Science Innovation and Universities (ex-MINECO) for his postdoctoral RyC contract. We acknowledge the European Union’s Horizon 2020 research & innovation program under grant agreement No. 763977 of the PerTPV project. We also thank María Dolores Jordán Martín for performing the XPS measurements.
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.