Schematic of a sequentially cast ternary (SeCaT) solar cell. (Peter and Ryan Allen)

Researchers from North Carolina State University have developed a new strategy for fabricating more efficient plastic solar cells. The work has implications for developing solar cells with a wider absorption range and increased efficiency.

As plastic solar cells rival silicon-based solar cells in power conversion efficiency, researchers want to increase the range of photonic energies that plastic solar cells absorb. The design allows fabrication of plastic solar cells with wider optical sensitivity using cheap and scalable processing steps and with reduced materials selection constraints.