Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
Publication date: 21st February 2018
Since the combustion of fossil fuels (coal, natural gas, and oil) accounts for the majority of carbon dioxide (CO2), renewable energy sources such as solar energy are becoming urgent solution to avoid escalated environmental problems. In contrast, photoelectrochemical (PEC) water splitting is a promising method to harvest solar energy and provide clean energy (e.g. hydrogen) by converting directly the sunlight from water to hydrogen. Despite intensive studies have investigated after the discovery of titanium dioxide (TiO2) photoelectrodes under ultraviolet radiation for water splitting by Fujishima and Honda at 1972, there remains a big challenge for hydrogen production by PEC water splitting. For example, metal oxides have a lower visible light absorption efficiency and slow charge transport kinetics which remain a limitation to achieve a high Solar-to-hydrogen conversion efficiency. PEC electrodes based on III-V semiconductor materials used for water oxidation exhibited the high performance photoelectrode owing to their high mobility and excellent optical properties. However, III-V semiconductors are thermodynamically unstable and corroded rapidly in alkaline or acidic electrolytes. Thus, the current challenge remains for hydrogen production by PEC water splitting to develop efficient and stable semiconductor photoelectrodes. We present an efficient and stable GaAs photonaode by using a novel nanostructure catalyst. The novel nanostructures improved charge transfer at semiconductor-electrolyte interface and hence accelerate oxidation reaction kinetics. More importantly, the novel nanostructure avoids charge accumulation at the surface of semiconductor, which suppresses recombination of photocarriers at the interface and reduces photocorrosion of the photoanode.Protective 3D nanostructure for an efficient and stable water-splitting GaAs photoanode
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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.
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