High Efficiency Solid-State Sensitized Solar Cell-Based on Submicrometer Rutile TiO 2 Nanorod and CH 3 NH 3 PbI 3 Perovskite Sensitizer

We report a highly efficient solar cell based on a submicrometer (~0.6 μm) rutile TiO2 nanorod sensitized with CH3NH3PbI3 perovskite nanodots. Rutile nanorods were grown hydrothermally and their lengths were varied through the control of the reaction time. Infiltration of spiro-MeOTAD hole transport material into the perovskite-sensitized nanorod films demonstrated photocurrent density of 15.6 mA/cm(2), voltage of 955 mV, and fill factor of 0.63, leading to a power conversion efficiency (PCE) of 9.4% under the simulated AM 1.5G one sun illumination. Photovoltaic performance was significantly dependent on the length of the nanorods, where both photocurrent and voltage decreased with increasing nanorod lengths.…

• NR
  National Research Foundation

  Awards: NRF-2012M3A6A7054861, 2012M3A6A7054861
• MO
  Ministry of Trade, Industry and Energy
• MO
  Ministry of Science, ICT and Future Planning

  Awards: 2012M3A6A7054861, NRF-2012M3A6A7054861
• NR
  National Research Foundation of Korea

  Awards: 2012M3A6A7054861, NRF-2012M1A2A2671721, 2011-0008467, NRF-2012M3A6A7054861, NRF-2010-0014992
• KI
  Korea Institute of Energy Technology Evaluation and Planning