Design and Synthesis of Fluorinated Quantum Dots for Efficient and Stable 0D/3D Perovskite Solar Cells
نویسندگان
چکیده
Abstract Dimensionality engineering involving the low‐dimensional and 3D perovskites has been demonstrated as an efficient promising strategy to modulate interfacial energy loss well instability in perovskite solar cells (PSCs). Herein, use of fluorinated Cesium Lead Iodide (CsPbI 3 ) quantum dot (PQD) is first reported interface modification layer for PSCs. The binding between CsPbI PQD surface native oleic acid (OLA)/oleylamine (OAm) ligands governed by a dynamic adsorption–desorption equilibrium. Perfluorooctanoic (PFA) with stronger affinity more hydrophobic nature explored partially replace OLA prepare ligand capped PQDs (F‐CsPbI ). Through optimization addition PFA during hot‐injection synthesis, situ treated F‐CsPbI display reduced defect states, higher photoluminescence yields together improved stability. Subsequently, both are utilized PSCs, delivering best efficiency values 21.99% 23.42%, respectively, which significantly enhanced compared control device (20.37%). More importantly, benefiting from its properties, exhibits excellent ambient storage stability (25 °C, relative humidity: 35–45%), retaining over 80% initial after 1500 h aging.
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ژورنال
عنوان ژورنال: Advanced Functional Materials
سال: 2023
ISSN: ['1616-301X', '1616-3028']
DOI: https://doi.org/10.1002/adfm.202304161