Preparation and Characteristics of MAPbBr(3) Perovskite Quantum Dots on NiO(x) Film and Application for High Transparent Solar Cells

In this work, a MAPbBr(3) quantum dot (QD-MAPbBr(3)) layer was prepared by a simple and rapid method. Octylammonium bromide (OABr) gives the MAPbBr(3) better exciton binding energy, good surface morphology, and stability. To form a nanocrystalline thin film on indium tin oxide (ITO) glass, the QD-MAPbBr(3) film was coated by a spin-coating method in a nitrogen-filled glove box and the NiO(x) film was used as an adhesive layer and hole transport layer. The highest transmittance of MAPbBr(3) on NiO(x)/ITO glass was around 75% at 700 nm. This study also reported a high transparent and perovskite bulk-free ITO/NiO(x)/QD-MAPbBr(3)/C(60)/Ag solar cell where the NiO(x), QD-MAPbBr(3), and C(60) were used as a hole transport layer, active layer, and electron transport layer, respectively.