Passivation Mechanism Exploiting Surface Dipoles Affords High-Performance Perovskite Solar Cells
Fatemeh Ansari, Erfan Shirzadi, Masoud Salavati‐Niasari, Thomas LaGrange, Kazuteru Nonomura, Jun‐Ho Yum, Kevin Sivula, Shaik M. Zakeeruddin, Mohammad Khaja Nazeeruddin, Michaël Grätzel, Paul J. Dyson, Anders Hagfeldt
Abstract
leads to a new passivation mechanism due to the presence of surface dipoles resulting in a power conversion efficiency (PCE) of 22.4%. The open-circuit voltage obtained is as high as 1.18 V, which is among the highest reported to date for single junction perovskite solar cells, corresponding to a voltage deficit of 0.37 V for a band gap of 1.55 eV.
Topics & Concepts
PassivationPerovskite (structure)ChemistryPhotovoltaic systemEnergy conversion efficiencyOpen-circuit voltageOptoelectronicsDipoleLayer (electronics)IodideBand gapVoltageChemical engineeringInorganic chemistryMaterials scienceCrystallographyElectrical engineeringOrganic chemistryEngineeringPerovskite Materials and ApplicationsQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin Films