Low-Cost Molybdenum Carbide and Tungsten Carbide Counter Electrodes for Dye-Sensitized Solar Cells

摘要

In the past two decades considerable scientific and industrial attention has been focused on dye-sensitized solar cells (DSCs) because of the low cost, environmental friendliness, and simple preparation procedures for various photovoltaic devices. Typically, a DSC comprises a dye-sensitized nano-crystalline semiconductor electrode (TiO2), an electrolyte with a redox couple (triiodide/iodide), and a counter electrode (CE), in which triiodide is reduced to iodide by the electrons flowing through the external circuit.