November 2015, № 13 (188)

Kislov D.A. IMPROVING THE EFFICIENCY OF LIGHT CONVERSION INTO ELECTRICAL ENERGY IN SOLAR DYE-SENSITIZED SOLAR CELL BY INTRODUCING INTO THE DESIGN OF PLASMONIC NANOPARTICLESWork on improving the performance of solar cells is constantly are carried out. One of perspective methods to enhance the performance is to use clusters of nanoparticles with plasmonic properties in the solar cell design. In our work we investigated the effect of metal nanoparticles with a plasmon resonance on the mechanisms of electrochemical photovoltaic cells based on nanostructured titanium dioxide. The basic idea is that if the dye molecule in the dye-sensitized solar cell falls to local amplification of the metal nanoparticles electric field, then it varies greatly absorption cross section. This effect leads to the fact that the photovoltaic cells generate more free charge carriers.In our opinion, this phenomenon is one of the most important in the description of the influence of metal nanoparticles with plasmon properties on the Gratzel solar cell.Shown, that the silver nanoparticles in sample design allow generate more photocurrent. Moreover, photo current rises up, with increasing of concentration nanosilver in the cell. It is found that the sample with the highest concentration of nanoparticles short circuit current value twice the value of the current in the standard sample. The analysis shows, that maximum plasmonic nanoparticles concentration in the solar cell, increases efficiency more than 2 times in comparison with the standard sample. Furthermore, to investigate the capacitive and transport properties of the photovoltaic cell samples, was conducted a series of kinetic experiments. Shown, that presence in the structure of the cells of silver nanoparticles increases the capacity on 30 %. Furthermore, we show that the addition of silver nanoparticles in the cell considerably increases the diffusion coefficient. Since the sample with the highest concentration of nanoparticles the average diffusion coefficient is 20 % larger than the average diffusion coefficient in the standard sample.Key words: dye-sensitized solar cell, photovoltaic, surface plasmons, DSSC, metal nanoparticles, titanium dioxide, dye molecules, nanocluster, Gratzel solar cell.

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About this article

Author: Kislov D.A.

Year: 2015

Editor-in-chief

Sergey Aleksandrovich
MIROSHNIKOV

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