Fig. 2From: Solution Processed Trilayer Structure for High-Performance Perovskite Photodetectora X-ray diffraction patterns of the MAPbBr3 film and the MAPbBr3/EA/TiO2 trilayer film. b MAPbBr3 film and MAPbBr3/EA/TiO2 trilayer film absorption spectra. c Absorption spectra at different ratios of PbBr2Back to article page