Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
Publication date: 18th December 2023
Metal halide perovskite (MHP) nanowire arrays have demonstrated impressive capabilities in various optoelectronic applications, including lasers, LEDs, solar cells, and photodetection [1]. The vertical alignment of these nanowire arrays provides numerous benefits, such as improved optical absorption and emission in the direction perpendicular to the substrate. Additionally, this arrangement offers technical advantages, including increased nanowire density and scalable device processing.
We have recently discovered that free-standing and vertically aligned CsPbBr3 nanowires can be grown from AAO nanopore substrates [2], with diameters of around 200 nm and lengths of up to 20 microns. The nanowires show strong room temperature photoluminescence, and single nanowire devices produced by a novel lithography process based on non-polar solvents show excellent photoconductivity [3].
Here, we demonstrate improved control over this growth, by systematically varying the growth conditions. The solvent evaporation rate is controlled by the flow of N2 gas, which in our reactor should be held below 2 L/min. The temperature dependence was explored from room temperature to 100 °C, revealing a fairly large growth window between 50-80 °C. The most favourable growth parameters were identified as 70 °C with a flow rate of 0.8 L/min. In situ microscopy with UV illumination was used to track the growth in situ. Locations where nanowires were observed exhibited pronounced fluorescence during the initial stages of growth, attributed to the initial crystallization of the MHP. The improved growth control provides a solid foundation for complex devices based on free-standing nanowires.
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.