An Organic-Inorganic Hybrid Material Based on Benzo[ghi]perylenetri-imide and Cyclic Titanium-Oxo Cluster for Efficient Perovskite and Organic Solar Cells

Perovskite and organic solar cells usually require electron-transport interlayers to efficiently transport electrons from the photoactive layer to the metal electrode. In general, pure organic or inorganic materials are applied into the interlayers, but organic-inorganic hybrid materials have been rarely reported for this application. In this work, we report using the first titanium-oxo cluster-based organic-inorganic hybrid as the interlayer material by introducing large it-conjugated benzo[ghi]perylenetriimides as an organic part via a simple ligand-exchange reaction. This new hybrid material showed excellent solubility, well-aligned energy levels, and excellent electron mobilities, enabling its great potential application as an interlayer in solar cells such as perovskite and organic solar cells, providing high power conversion efficiencies of >20% and 16%, respectively. Therefore, we claim that our present work introduces a new class of cluster-based organic-inorganic hybrid interlayer materials that exhibit promising application in organic electronics. [GRAPHICS] .

Automated summary

This paper reports the use of a titanium-oxo cluster-based organic-inorganic hybrid material as an interlayer in solar cells, which improves electron transport efficiency and power conversion efficiency. The hybrid material exhibits good solubility and electron mobility, making it highly promising for applications in perovskite and organic solar cells.