EMPLOYING LEAD THIOCYANATE ADDITIVE TO REDUCE THE HYSTERESIS AND BOOST THE FILL FACTOR OF PLANAR PEROVSKITE SOLAR CELLS.
Lead thiocyanate in the perovskite precursor can increase the grain size of a perovskite thin film and reduce the conductivity of the grain boundaries, leading to perovskite solar cells with reduced hysteresis and enhanced fill factor. A planar perovskite solar cell with grain boundary and interface passivation achieves a steady-state efficiency of 18.42%.
Contributors:
Weijun Ke, Chuanxiao Xiao, Changlei Wang, Bayrammurad Saparov, Hsin-Sheng Duan, Dewei Zhao,Zewen Xiao, Philip Schulz, Steven P Harvey, Weiqiang Liao, Weiwei Meng, Yue Yu, Alexander J Cimaroli, Chun-Sheng Jiang, Kai Zhu, Mowafak Al-Jassim, Guojia Fang, David B Mitzi, Yanfa Yan