Employing Lead Thiocyanate Additive to Reduce the Hysteresis and Boost the Fill Factor of Planar Perovskite Solar Cells

Ke WJ; Xiao CX; Wang CL; Saparov B; Duan HS; Zhao DW; Xiao ZW; Schulz P; Harvey SP; Liao WQ; Meng WW; Yu Y; Cimaroli AJ; Jiang CS; Zhu K; Al-Jassim M; Fang GJ; Mitzi DB; Yan YF

Advanced Materials, Vol.28, No.26, 5214-5214, 2016

DOI10.1002/adma.201600594 Export Citation

Employing Lead Thiocyanate Additive to Reduce the Hysteresis and Boost the Fill Factor of Planar Perovskite Solar Cells

Ke WJ, Xiao CX, Wang CL, Saparov B, Duan HS, Zhao DW, Xiao ZW, Schulz P, Harvey SP, Liao WQ, Meng WW, Yu Y, Cimaroli AJ, Jiang CS, Zhu K, Al-Jassim M, Fang GJ, Mitzi DB, Yan YF

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%.