Solar energy carrier

Global carbon-recycling energy delivery system for CO mitigation (III) Fossil/solar energy hybridization system for utilization of carbon as solar energy carrier... 

The band-gap excitation of semiconductor electrodes brings two practical problems for photoelectrochemical solar energy conversion (1) Most of the useful semiconductors have relatively wide band gaps, hence they can be excited only by ultraviolet radiation, whose proportion in the solar spectrum is rather low. (2) the photogenerated minority charge carriers in these semiconductors possess a high oxidative or reductive power to cause a rapid photocorrosion. 

In the project series Impulse , Kosmatschof integrates impulses in the form of electrical discharges of lightning into the solar sculpture designs Impulse Flower and Impulse Square . There is also another version of Impulse Flower in which the spectral colors are made visible by means of water vapor, thus enabling the obseiver to experience light as an energy carrier in all its complexity. 

We recognize the nuclear reactions of the sun as the main source of our energy and the crucial role of photosynthesis as the conversion process of solar light into fossil energy carriers and renewable biomass. We also recognize gravitational sources that result in tidal movement and the earth s thermal resources. 

There are two options To remove CO2 using a chemical (reduction) reaction requires energy. Nuclear or solar energy are candidates that do not produce C02 themselves. In essence C02 is then reduced back to an energy carrier renewable energy is to be used. 

For capture and conversion of solar energy, semiconductors possess several key advantages, including relatively high absorption coefficients and the possibility to separate the photogenerated carriers at homo and heterojunctions. The energy... 

Fig. 3.1 Solar hydrogen production via photoelectrolysis, with enormous potential for providing a renewable and clean energy carrier.

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