EcoMat · 2021 · 46 citations · 52 references
EngineeringMaterials EngineeringMaterials ScienceEnergy MaterialsMaterials ChemistryOptoelectronicsCarrier TransportPhotovoltaic DevicesPhotovoltaic MaterialsSemiconductor InterfacesSolar Cell MaterialsSolar CellsCarrier RecombinationCharge Carrier RecombinationEnergy Conversion EfficiencyHole TransportHole Transport LayersPerovskite Solar CellsPower ConversionPower Conversion Efficiency
Abstract Interface engineering has been proven a powerful tool to improve performances of the perovskite solar cells (PSCs). Herein, highly π‐conjugated graphdiyne (GDY) is employed as an interface linker between the perovskite film and the hole transport layer (HTL). It is found that GDY can significantly suppress the formation of metallic Pb (a detrimental defect), and reduces carrier recombination. The linker can also form π‐π stacking interaction with the HTL, and facilitates transport and collection of photogenerated holes. The perovskite/GDY/HTL combination leads to large improvement in both power conversion efficiency (from 19.94% to 22.17%) and device stability. In addition, the GDY is also applied to the 3D/2D PSCs, and an outstanding PCE of 23.42% is achieved. image
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Surface passivation of perovskite film for efficient solar cells
Qi Jiang, Yang Zhao, Xingwang Zhang et al. · Nature Photonics · 2019 · 4.7K citations
Natural Sciences, Materials Engineering, Materials Science +16