« The Finnish Press Club ». Théâtre documentaire journalistique et débat social

Gröndahl, Laura; Hautakangas, Mikko

doi:10.4074/s0336150016014071

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“…In the 1920s, almost one century after Becquerel discovered the photovoltaic effect, Cu 2 O was one of the first materials to be used to fabricate solar cells, decades before the era of silicon-based solar cells. Searching for new rectifier materials, Grondahl found that Cu 2 O made by thermally oxidizing copper discs showed a response to light. , These early examples and the majority of Cu 2 O solar cells in the subsequent decades were Schottky diodes with poor efficiency. Olsen et al explored a variety of metals for pairing with Cu 2 O, such as Yb, Mg, Mn, Al, and Cr, and found that the Schottky barrier height was 0.7–0.9 eV, independent of the metal that was used .…”

Section: Cu2o Solar Cellsmentioning

confidence: 99%

Photovoltaic and Photoelectrochemical Solar Energy Conversion with Cu₂O

2015

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The amount of solar power striking the earth’s surface is vastly superior to humanity’s present day energy needs and can easily meet our increasing power demands as the world’s population grows. In order to make solar power cost competitive with fossil fuels, the conversion devices must be made as cheaply as possible, which necessitates the use of abundant raw materials and low energy intensity fabrication processes. Cuprous oxide (Cu2O) is a promising material with the capacity for low cost, large-scale solar energy conversion due to the abundant nature of copper and oxygen, suitable bandgap for absorption of visible light, as well as effective, low energy intensity fabrication processes such as electrodeposition. For photoelectrochemical (PEC) water splitting, protective overlayers have been developed that greatly extend the durability of hydrogen-evolving Cu2O-based materials. Recent developments in the advancement of protective overlayers for stabilizing photoabsorber materials for water splitting are discussed, and it is concluded that the use of protective overlayers is a viable strategy for practical water splitting devices.

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Section: Cu2o Solar Cellsmentioning

confidence: 99%