In this work, inverted structure CH 3 NH 3 PbI 3 perovskite-based solar cells (PSCs) employing different inorganic metal oxides as hole-selective interlayers have been fabricated on ITO/NiO x , ITO/VO x and ITO/MoO x substrates and exhibit power conversion efficiencies (PCEs) of 10.6±0.6 %, 11.7±0.5 % and 5.9±0.5 %, respectively. The metal oxide layers deposited on ITO glass modify the substrate work function, leading to open circuit voltages above 1.0 V. Moreover, solar cells fabricated on ITO substrates without any metal oxide layer achieve a high PCE of 11.5 %, indicating that PSCs can perform well with a single selective contact. The inverted structure PSCs, with or without the metal oxide interlayers, show only a weak hysteresis in the J-V measurements. Our work reveals that single selective contact PSCs with simplified device structures can be very efficient after optimization of each active layer, making them highly competitive with other types of thin film photovoltaic (PV) technologies.
- alkylammonium lead(II) triiodide
- metal oxide interlayers
- perovskite materials
- thin film solar cells
Peter Miller (Manager)Office of the Vice-Provost (Research and Research Infrastructure)
Sean Langelier (Manager)Office of the Vice-Provost (Research and Research Infrastructure)