Fig. 7From: WO3 Nanoparticles or Nanorods Incorporating Cs2CO3/PCBM Buffer Bilayer as Carriers Transporting Materials for Perovskite Solar CellsXRD patterns of a WO3 NL and NAs. b perovskite deposited on WO3 NL without and with Cs2CO3/PCBM bilayerBack to article page