We fabricated perovskite based solar cells using CH3NH3PbI3-xClx with different hole transporting materials such as Spiro-OMeTAD and P3HT. By tuning the energy level of P3HT and optimizing the device’s fabrication, we reached 9.3% of power conversion efficiency showing that P3HT can be a suitable low cost hole transport material for efficient perovskite based solar cells.
[ Di Giacomo et al, J. Power Sources 251, 152 (2014)]
