Photogalvanic cells effect

Cadmium stannate, used as electrodes in photogalvanic cells, is another example of a transparent conductor oxide (TCO) having desirable properties, such as good durability and chemical resistance. It can be produced by the spray pyrolysis CVD method with organic solutions of CdCH and SnCH or [Cd(hfa)2 (TMEDA)] and [Sn(acac)2]. ° It also shows the unexpected effect of improving transparency with increasing Him conductivity higher than tin-doped indium oxide. 

Solar energy conversion has been achieved using a photogalvanic cell incorporating methylene blue/diethylenetriaminepentaacetic acid, and the effects of conditions on the cell performance have been described.34 in a photogalvanic study of K3Mn(CN)6 in aqueous solutions of CN-, irradiation of the anodic compartment cau.ses an increasing current in the... 

After dark-condition equilibrium was established, as indicated by the visible spectra, the photo-shift in equilibrium was observed to be completely reversed when the illumination ceased. This photogalvanic effect maintained a mass balance in the system, with no reagent consumed or generated during the dark-light-dark cycle. This observation suggested that the plutonium system in the proper network of a concentration cell... 

The electrochemical photovoltaic effect was discovered in 1839 by A. E. Becquerelt when a silver/silver halide electrode was irradiated in a solution of diluted HN03. Becquerel also first described the photogalvanic effect in a cell consisting of two Pt electrodes, one immersed in aqueous and the other in ethanolic solution of Fe(C104)3. This discovery was made about the same time as the observation of the photovoltaic effect at the Ag/AgX electrodes. The term Becquerel effect often appears in the old literature, even for denoting the vacuum photoelectric effect which was discovered almost 50 years later. The electrochemical photovoltaic effect was elucidated in 1955 by W. H. Brattain and G. G. B. Garrett the theory was further developed... 

Earlier light-to-electricity conversion cells were often based on the photogalvanic effect, whereby light was absorbed in a dye in solution or adsorbed on an elecnode surface. The iron-thionine cell of Murphy (1978) provides an example of a photogalvanic device with storage. The forward reaction is ... 

PEC effects, and therefore cells, can exist in two forms - photovoltaic (PV) and photogalvanic (PG) - the latter of which shall be discussed extensively within this review. A third type of PEC cell has been proposed by Tien et al. [6] which combines the effects of the photogalvanic and photovoltaic processes and is subsequently named the photogalvanovoltaic effect. However, the feasibility of using this process as a commercial application is questionable, and research into photogalvanovoltaic cells is extremely limited [7, 8]. 

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