Electron conversion efficiency

Bach U, Lupo D, Comte P, Moser JE, Weissdrtel E, Salbeck J, Spreitzer H, Gratzel M (1998) Solid-state dye-sensitized mesoporous TiOa solar cells with high photon-to-electron conversion efficiencies. Nature 395 583-585... 

Two devices are prepared. In the case of the device A, the incident photon-to-collected electron conversion efficiency (IPCE) exceeds 80% from 410 to 590 nm, reaching the maximum of 93% at 530 nm. The short-circuit photocurrent density (/sc), open-circuit photovoltage (Voc), and fill factor (FF) of device A with an acetonitrile-based electrolyte under an irradiance of AM 1.5 G full sunlight are 14.33 mA cm-12, 734 mV, and 0.76, respectively, yielding an overall conversion efficiency (jf) of 8.0%. The photovoltaic parameters of device B with a solvent-free ionic liquid electrolyte are 14.06 mA cm 12, 676 mV, 0.74, and 7.0%, respectively. 

This part is mainly driven by the power-electronic requirements. Basically the tendency is to maximize the working voltage to reduce the conductor weights and to increase the electronic conversion efficiency. As the voltage on the DLC module varies according to the state of charge, there is a need to integrate an inverter in the system in almost all the applications. 

Finally, researchers also quote another efficiency parameter closely related to , namely, the IPCE or incident photon to electron conversion efficiency. 

U. Bach, D. Lupo, P. Comte, J. E. Moser, F. Weissortel, J. Salbeck, H. Spreitzer, and M. Gratzel. Solid-state dye-sensitized mesoporous Ti02 solar ceUs with high photon-to-electron conversion efficiencies. Nature, 395 583-585,1998... 

For solar cells, the efficiency is given under irradiation with a solar spectrum under air mass 1.5 (AM 1.5) [65] in terms of power conversion efficiency or internal photon-to-electron conversion efficiency (ICPE) [66]. Characteristic parameters that are often used are the open circuit voltage Voc, the short circuit current density /sc, and the fill factor, given by... 

High photon-to-electron conversion efficiency Low electron-hole loss... 

Solid State Dye-Sensitized Solar Cell, Fig. 2 (left) JV characteristics of the highest efficiency reported SDSSC and (right) its corresponding incident photon-to-electron conversion efficiency spectrum as a function of monochromatic wavelength. The right axis of the graph... 

Snaith HJ, Ducati C (2010) Sn02-based dye-sensitized hybrid solar cells exhibiting near unity absorbed photon-to-electron conversion efficiency. Nano Lett 10 1259 1265... 

Evaluation of an SC photovoltaic performance is usually accomplished with a set of tests. Those involve measurements of the current-voltage (I-V) curves for the cell in the dark and under light illumination, fluorescent decay upon photoexcitation, determination of the incident photon-to-electron-conversion efficiency (TPCE), etc. 

Subbaiyan NK, Maligaspe E, D Souza F (2011) Near unity photon-to-electron conversion efficiency of photoelectrochemical cells built on cationic water-soluble porphyrins electrostatically decorated onto thin-film nanocrystalline Sn02 surface. ACS Appl Mater Interfaces 3(7) 2368-2376... 

Guo X-Z, Luo Y-H, Zhang Y-D et al (2010) Study on the effect of measuring methods on incident photon-to-electron conversion efficiency of dye-sensitized solar cells by homemade setup. Rev Sci Instr 81 103106-103114... 

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