Light to electricity conversion

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 ... 

The above chemical coupling leads to uniform dispersion (as inferred from TEM images) of QCNs within CP matrix [162] leading to improved charge transfer/transport and enhancement of optoelectronic performance, e.g., light-to-electricity conversion efficiency in hybrid solar cells. 

In Table 4 short-circuit photocurrent (/sc)> open-circuit photovoltage (yoc)> fill factor (ff), and light-to-electricity conversion efficiency (rj) are... 

Figure 2 shows some representative photocurrent action spectra for the Ti02 electrode alone and in the presnce of the complex tris(4,4 -dicarboxy-2,2 -bipyridine)Ru(II), [Ru(dcbpy)3] and electron donors (bromide or iodide). Plotted are light-to-electrical conversion efficiency for monochromatic radiation as monitored by photocurrent, as a function of wavelength of irradiation. The features of the photocurrent action spectra are similar to the absorption spectrum in homogeneous solution. The incident photon conversion efficiency (IPCE) obtained with the Ru-complex is >70% at the absorption maximum in the visible light region. 

The DSSC photoanodes are very important for the optimal light-to-electricity conversion efficiencies. Firstly, charge transport must be enhanced while... 

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