Advanced Functional Materials · 2019 · 164 citations · 76 references
Natural SciencesMaterials EngineeringMaterials ScienceEnergy MaterialsMaterials ChemistrySemiconductor MaterialsDopingOxide SemiconductorsPerovskite MaterialsPhotovoltaic MaterialsSolar Cell MaterialsSolar CellsChemical CompatibilityChemical PassivationChemical Surface FunctionalizationCombustion SynthesisElectron Transport LayersPassivationPerovskite Solar CellsPower Conversion
Abstract Perovskite solar cells (PSCs) have advanced rapidly with power conversion efficiencies (PCEs) now exceeding 22%. Due to the long diffusion lengths of charge carriers in the photoactive layer, a PSC device architecture comprising an electron‐ transporting layer (ETL) is essential to optimize charge flow and collection for maximum performance. Here, a novel approach is reported to low temperature, solution‐processed ZnO ETLs for PSCs using combustion synthesis. Due to the intrinsic passivation effects, high crystallinity, matched energy levels, ideal surface topography, and good chemical compatibility with the perovskite layer, this combustion‐derived ZnO enables PCEs approaching 17–20% for three types of perovskite materials systems with no need for ETL doping or surface functionalization.
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Interface engineering of highly efficient perovskite solar cells
Huanping Zhou, Qi Chen, Gang Li et al. · Science · 2014 · 6.6K citations