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Efficient ZnO-Free Organic Solar Cells based on 2,6-Pyridinedimethanol as the Cathode Buffer Layer
김동근,진호철,( Ratna Dewi Maduwu ),( Sabrina Aufar Salma ),안병현,김주현 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
For an efficient Zinc Oxide (ZnO)-free organic solar cells (OSCs), a 2,6-pyridinedimethanol (Py-diOH) was spin-coated as the cathode buffer layer in PTB7:PC<sub>71</sub>BM-based bulk heterojunction (BHJ) OSCs. The energy level of indium tin oxide (ITO) was modified by introducing the Py-diOH layer, which generated a favorable interface dipole between ITO and active layer. The power conversion efficiencies (PCEs) of the device based on Py-diOH reached up to 7.44%, which is comparable with that of the device with ZnO as the electron transfer layer. In addition, it is possible to achieve high PCEs without any thermal treatment.