Ozone-Mediated Controllable Hydrolysis for a High-Quality Amorphous NbOx Electron Transport Layer in Efficient Perovskite Solar Cells.

Amorphous NbOx electron transport layer (ETL) shows great potential for boosting the power conversion efficiency (PCE) of perovskite solar cells (PSCs) at low temperature (< 100 °C). To date, it is...