Dual-band gap

The principal solar water-splitting models predict dual-band gap photoelectrolysis efficiencies of 16% [40], and 10-18% [41]. 

Principal solar water-sphtting models had predicted similar dual band gap photoelectrolysis efficiencies of only 16% and 10-18% [3, 28], respectively, whereas recently dual band gap systems were calculated to be capable of attaining over 30% solar photoelectrolysis conversion efficiency [14]. The physics of the earlier models were superb, but their analysis was influenced by dated technology, and underestimated the experimental jjphoto attained by contemporary devices or underestimated the high experimental values of JJelectrolysis which Can be... 

Table 3 includes predicted maximum photoelectrolysis Using observed /(photo of various dual band gap sensitizers. It is seen that solar water spKtting efficiencies may be viable at up to double the amount of that previously predicted. Efficient, three or more multiple band gap photoelectrolysis... 

Fabrication of simple dual-band and dual-plate junction electrodes (similar to microgap electrode systems" ) was recently demonstrated with the development of ITO-epoxy-ITO electrodes. These electrodes consist of two ITO-coated glass slides stuck together with epoxy resin (cured under pressure from a weight to minimise gap size). The end of the electrode was sliced off with a diamond blade to reveal two ITO nano-bands separated by a layer of epoxy. This type of dual-band electrode was further improved by etching out the epoxy with Piranha solution to create a dual-plate... 

Pyrometric thermometers can be of the following types optical (brightness), ratio (two-color), total (wide-band), and narrow-band, whereas the fiber optic designs can be of the light-pipe, black body, dual-wavelength, crystal, gap, and fluoroptic variety. Their temperature ranges are from -40 to 4,000°C (-40 to 7,000°F), and their errors range from 0.25% to 2% FS. 

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