Proceedings of nanoGe Fall Meeting 2021 (NFM21)
Publication date: 23rd September 2021
The capture of solar energy and its direct conversion into chemical energy using artificial photosystems is one of the most promising routes to provide the global demand for energy in a sustainable way. Among the different existing approaches, the photoelectrochemical energy conversion (PEC) has attracted considerable interest for solar energy storage through the formation of chemical bonds in form of dihydrogen molecules or carbon-based fuels. [1] These systems are normally based on semiconductors that absorb solar energy, that is, photoanodes (photooxidation reaction) and photocathodes (photoreduction reaction), coupled to catalyst and connected by an aqueous electrolyte. However, the main challenge lies in the lack of efficient, inexpensive, stable and scalable semiconductors, particularly in the photoanode, where the oxygen evolution reaction (OER) takes place.
Metal oxides are the most studied as photoanodes since they have a valence band with a thermodynamically favourable energy for the OER. Numerous types of semiconductors have been tested, such as titanium dioxide (TiO2), hematite (α-Fe2O3), bismuth vanadate (BiVO4) and tungsten trioxide (WO3) among others. [2] Bismuth vanadate (BiVO4), has attracted attention in the last two decades as one of the most robust, efficient, and inexpensive photoanode for water electrolysis. BiVO4 is characterized by having a bandgap of 2.4 eV, allowing it to absorb a greater amount of solar energy compared to the previously mentioned oxides. [3]
In this poster, I will present a novel synthesis to obtain bismuth vanadate nanoparticles using a surfactant as distribution agent and to control the size. This synthesis offers the advantage of being carried out at low temperature, in an aqueous medium and using inexpensive precursors. These nanoparticles provide a high surface area in addition to multiple photoelectrodes designs to obtain efficient devices.
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.