Abstract
In this work, the MAPbBr(3) perovskite crystals were grown and the interfacial properties of the polycrystalline MAPbBr(3) with Aluminum (Al) and Silver (Ag) contacts has been investigated. MAPbBr(3) crystals are turned into the poly-crystalline pellets (PCP) using compaction technique and the AI/PCP, Al/interface layer/PCP, Ag/PCP, and Ag/interface layer/PCP contacts were investigated. Scanning Electron Microscopic (SEM), Energy-dispersive X-ray spectroscopy (EDX) and current-voltage (I-V) characteristic technique were used to have an insight of the degradation mechanism happening at the Metal/perovskite interface. The Ag/PCP contact appears to be stable, whereas Al is found to be highly reactive with the MAPbBr(3) perovskite crystals due to the infiltration setback of Al in to the perovskite crystals. The interface layer showed a slight effect on the penetration of Al in to the perovskite crystals however it does not seem to be an appropriate solution. It is noteworthy that the stability of the underlying metal/perovskite contact is very crucial towards the perovskite solar cells with extended device lifetime. (C) 2017 Elsevier B.V. All rights reserved.