{"paper":{"title":"Enhancing the Open-Circuit Voltage of Perovskite Solar Cells by up to 120 mV using {\\pi}-Extended Phosphoniumfluorene Electrolytes as Hole Blocking Layers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Andreas Weu, A. Stephen K. Hashmi, David Becker-Koch, Fabian Paulus, Fabian Stuck, Nir Tessler, Qing Sun, Qingzhi An, Sebastian Arndt, Yana Vaynzof","submitted_at":"2019-06-13T19:12:20Z","abstract_excerpt":"Four {\\pi}-extended phosphoniumfluorene electrolytes ({\\pi}-PFEs) are introduced as hole-blocking layers (HBL) in inverted architecture planar perovskite solar cells (PVSCs) with the structure of ITO/PEDOT:PSS/MAPbI3/PCBM/HBL/Ag. The deep-lying highest occupied molecular orbital (HOMO) energy level of the {\\pi}-PFEs effectively blocks holes, decreasing contact recombination. We demonstrate that the incorporation of {\\pi}-PFEs introduces a dipole moment at the PCBM/Ag interface, resulting in a significant enhancement of the built-in potential of the device. This enhancement results in an increa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05899","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}