Lyu, Mei Park, Sungmin Lee, Hyeonju Ma, Boo Soo Park, So Hyun Hong, Ki-Ha Kim, Hyungjun Kim, Taek-Soo Noh, Jun Hong Son, Hae Jung Park, Nam-Gyu 2024-01-19T14:02:24Z 2024-01-19T14:02:24Z 2022-01-10 2021-08-04 1944-8244 https://pubs.kist.re.kr/handle/201004/116594 For enhancing the performance and long-term stability of perovskite solar cell (PSC) devices, interfacial engineering between the perovskite and hole-transporting material (HTM) is important. We developed a fluorinated conjugated polymer PFPT3 and used it as an interfacial layer between the perovskite and HTM layers in normal-type PSCs. Interaction of perovskite and PFPT3 via Pb-F bonding effectively induces an interfacial dipole moment, which resulted in energy-level bending; this was favorable for charge transfer and hole extraction at the interface. The PSC device achieved an increased efficiency of 22.00% with an open-circuit voltage of 1.13 V, short-circuit current density of 24.34 mA/cm(2), and fill factor of 0.80 from a reverse scan and showed an averaged power conversion efficiency of 21.59%, which was averaged from forward and reverse scans. Furthermore, the device with PFPT3 showed much improved stability under an 85% RH condition because hydrophobic PFPT3 reduced water permeation into the perovskite layer, and more importantly, the enhanced contact adhesion at the PFPT3-mediated perovskite/HTM interface suppressed surface delamination and retarded water intrusion. The fluorinated conjugated polymeric interfacial material is effective for improving not only the efficiency but also the stability of the PSC devices. English American Chemical Society HOLE-TRANSPORTING MATERIAL MOISTURE STABILITY LEAD IODIDE ENERGY IMPACT LAYERS Simultaneous Enhanced Efficiency and Stability of Perovskite Solar Cells Using Adhesive Fluorinated Polymer Interfacial Material Article 10.1021/acsami.1c05822 1 ACS Applied Materials & Interfaces, v.13, no.30, pp.35595 - 35605 ACS Applied Materials & Interfaces 13 30 35595 35605 scie scopus 000683741400031 2-s2.0-85112323380 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article HOLE-TRANSPORTING MATERIAL MOISTURE STABILITY LEAD IODIDE ENERGY IMPACT LAYERS perovskite solar cell interfacial layer fluorinated conjugated polymer hole-transporting layer moisture stability