For one thing, sufficient light must reach the solar cell in order to create the
voltage for water splitting — despite the additional layers of material.
Monolithic Photoelectrochemical
Device for Water Splitting with 19 % Efficiency Wen - Hui Cheng, Matthias H. Richter, Matthias May, Jens Ohlmann, David Lackner, Frank Dimroth, Thomas Hannappel, Harry Atwater, Hans - Joachim Lewerenz
The initial thinking started with the approach she and her group have used to understand and control
catalysts for water splitting, and applying it to ion conduction — the process that lies at the heart of not only rechargeable batteries, but also other key technologies such as fuel cells and desalination systems.
Having largely achieved that task using several types of devices, JCAP scientists doing solar - driven carbon dioxide reduction began setting their sights on achieving efficiencies similar to those
demonstrated for water splitting, considered by many to be the next big challenge in artificial photosynthesis.
The free electrons in both BP and gold nanoparticles are then transferred into the LTO semiconductor, where they act as an electric
current for water splitting.
To solve the problem, Wood and lead author Yuanyue Liu — a Livermore summer intern with Wood — turned to a class of catalysts based on transition - metal dichalcogenides (MX2), which have generated a great deal of
interest for water splitting.
Although it is unbelievably cheap and absorbs light in exactly the wavelength region where the sun emits the most energy, it conducts electricity very poorly and must therefore be used in the form of an extremely thin film in
order for the water splitting technique to work.
«Our method could be widely applicable to a large number of metal phosphide materials for catalysts — not
just for water splitting, but for a range of things,» he said.
«Thermodynamics and Kinetics of Semiconductor Preparation» (Part I) The lecture will address growth of bulk material and thin films of compound semiconductors which are of interest as
absorbers for water splitting electrodes.
A major obstacle towards the development of a viable artificial photosynthetic
systems for water splitting to hydrogen and oxygen, or the conversion of carbon dioxide and water to liquid fuel, involves the inefficient charge transport between light absorbers and catalysts and, in particular, between the sites of water oxidation and fuel - generating half - reactions.
Nuclear energy s special potential is as an abundant source of electricity for electrolysis and high - temperature
heat for water splitting while the cities sleep.
Having largely achieved that task using several types of devices, JCAP scientists doing solar - driven carbon dioxide reduction began setting their sights on achieving efficiencies similar to those
demonstrated for water splitting, considered by many to be the next big challenge in artificial photosynthesis.