Two-Dimensional Phosphorene for Solution-Processed Thin-Film Solar Cells

Two-dimensional phosphorene (2D phosphorene) exhibits significant advantages in the field of solar cells due to its tunable bandgap, high carrier mobility, and high light absorption. They can serve as electrodes, hole transport layers (HTLs), electron transport layers (ETLs), and functional additives in the active layer, significantly enhancing the optoelectronic performance of devices. This paper reviews the basic properties and provides a comprehensive summary of the synthesis methods of 2D phosphorene. Furthermore, the impact of 2D phosphorene as an electrode, charge transport layer, and additive in the active layer of solution-processed thin-film solar cells is highlighted. Although the application of phosphorene in solar cells has achieved initial success, its stability issues and challenges of large-scale preparation still need to be further addressed. It is believed that 2D phosphorene is anticipated to have a significant impact on the commercial application of high-efficiency solar cells.