Simple solution-processed CuOX as anode buffer layer for efficient organic solar cells

- Simple solution-processed CuOX hole transport layer for efficient organic solar cell.
- Good photovoltaic performances as hole transport layer in OSCs with P3HT and PBDTTT-C as donor materials.
- The device with CuOX as hole transport layer shows great improved stability compared with that of device with PEDOT:PSS as hole transport layer.