Design of nanostructured intermediate layer for tandem solar cells

Increasing research interest is currently dedicated to tandem solar cells to explore the potential of high-efficiency photovoltaic devices. To achieve the optimal performance of the subcells, photon management through the intermediate layer is required. Nanostructured intermediate layers are investigated as spectral splitters to enhance the absorption of subcells in tandem. The wavelength-selective intermediate layer with spectral tunability is flexible for use in different combinations of photovoltaic materials.