Arylamine-based photosensitizing metal complexes for dye-sensitized solar cells

The continuous growth of energy demand around the world and the environmental pollution resulting from global warming have triggered global research toward the exploitation of clean and renewable energy sources over the past decades as the resources of coal, oil, and natural gas are dwindling rapidly. Solar energy is generally considered as the most promising way to solve the global energy crisis as it is available profusely in most of the world's regions, is inexhaustible, and can be used for direct electricity production by means of photovoltaic and photoelectrochemical cells. In this context, dye-sensitized solar cells (DSSCs) have attracted tremendous attention as an economical solar energy conversion device that offers several advantages over traditional silicon-based p-n junction devices such as low cost and simpler fabrication procedures. Furthermore, DSSCs display higher efficiencies at low light levels and the angle of the incident light has no great effect on the performance.