Quantum dot dye-sensitized solar cell

Abstract

A quantum dot dye-sensitized solar cell (QDDSSC) including an anode, a cathode, and an electrolyte between the anode and the cathode is provided. The anode includes a semiconductor electrode layer adsorbed with a dye, a plurality of quantum dots distributed within the semiconductor electrode layer, and a plurality of metal nanoparticles distributed within the semiconductor electrode layer. Because the absorption spectra of the quantum dots, the dye, and the semiconductor electrode layer cover the infrared (IR), visible, and ultraviolet (UV) regions of the solar spectrum, IR to UV light in thesolar spectrum can be effectively absorbed, and accordingly the conversion efficiency of the solar cell can be improved. Moreover, the metal nanoparticles can increase the light utilization efficiency.

Description

technical field

[0001] The present invention relates to a dye-sensitized solar cell (dye-sensitized solar cell, DSSC), and in particular to a quantum dot dye-sensitized solar cell (QDDSSC). Background technique

[0002] A solar cell is a clean energy source that generates electricity directly from sunlight. In recent years, dye-sensitized solar cells have become one of the most promising solar cells because the cost is much lower than other types of solar cells.

[0003] The energy of solar radiation is mainly distributed in the visible light region and the infrared region, the former accounts for 50% of the total solar radiation, and the latter accounts for 43%. The ultraviolet region accounts for only 7% of the energy. However, the absorption spectrum range of traditional dye-sensitized solar cells only includes visible light and ultraviolet light, and the red light and infrared regions, which account for nearly 50% of the total solar radiation, have not been utilized. ...

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