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Photoelectrochemical cells or PECs are solar cells and extract electrical energy from light, including visible light. Each cell consists of a semiconducting photoanode and a metal cathode immersed in an electrolyte.
Additional recommended knowledge
In this type of photoelectrochemical cell, electrolysis of water to hydrogen and oxygen gas occurs when the anode is irradiated with electromagnetic radiation. This has been suggested as a way of converting solar energy into a transportable form, namely hydrogen. The photogeneration cells passed the 10 percent economic efficiency barrier.
Lab tests confirmed the efficiency of the process. The main problem is the corrosion of the semiconductors which are in direct contact with water. Research is going on to meet the United States Department of Energy requirement, a service life of 10000 hours.
Graetzel cells or dye-sensitized solar cells; these cells use dye-adsorbed highly porous nanocrystalline titanium oxide (nc-TiO2) to produce electrical energy.
Other third generation solar cells
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Photoelectrochemical_cell". A list of authors is available in Wikipedia.|