An Organic-Inorganic Hybrid Electrolyte as a Cathode Interlayer for Efficient Organic Solar Cells

An organic-inorganic hybrid electrolyte based on a cyclic Ti-oxo cluster as the inorganic core and naphthalene-based organic ammonium bromide salts as the electrolyte was developed with easy synthesis and low cost. The new hybrid electrolyte exhibits excellent solubility in methanol, aligned work function, good conductivity, and amorphous state in thin film, enabling its successful application as a cathode interlayer in organic solar cells with a high power conversion efficiency of 17.19 %. This work demonstrates that the hybrid electrolytes are a new kind of semiconductor, exhibiting promising applications in organic electronics.

Automated summary

The hybrid electrolyte based on a cyclic Ti-oxo cluster and organic ammonium bromide salt demonstrates excellent solubility, aligned work function, good conductivity, and amorphous state, making it suitable for application as a cathode interlayer in organic solar cells with a high power conversion efficiency. This work suggests that hybrid electrolytes could be a new kind of semiconductor with promising applications in organic electronics.