Pivotal factors in solution-processed,non-fullerene,all small-molecule organic solar cell device optimization |
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| Affiliation: | 1. Department of Physics, Dalhousie University, 1459 Oxford Street, Halifax, Nova Scotia B3H 4R2, Canada;2. Department of Chemistry, Dalhousie University, 1459 Oxford Street, Halifax, Nova Scotia B3H 4R2, Canada;1. Department of Pediatrics, Kansai Medical University, Hirakata City, Osaka 573-1010, Japan;2. Division of Surgical Pathology, Toyooka Hospital, Toyooka City, Hyogo 668-8501, Japan;3. Department of Stem Cell Disorders, Kansai Medical University, Hirakata City, Osaka 573-1010, Japan;4. Department of Molecular Target Medicine Screening, Aichi Medical University School of Medicine, Nagakute, Aichi 480-1195, Japan;5. Department of Internal Medicine, Otokoyama Hospital, Yawata City, Kyoto 614-8366, Japan;6. Department of Clinical Laboratory, Toyooka Hospital, Tobera, Toyooka City, Hyogo 668-8501, Japan;1. Department of Chemistry, College of Science, Shanghai University, 99 Shangda Road, BaoShan District 200444, Shanghai, PR China;2. Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, 398 Ruo Shui Road, SEID SIP, Suzhou, 215123, PR China;3. Department of Chemistry, Xi''an Jiaotong Liverpool University, 111 Ren Ai Road, SEID SIP, Suzhou, 215123, China;1. CNRS UMR 6200, MOLTECH-Anjou, University of Angers, 2 Bd Lavoisier, 49045, Angers, France;2. Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada;1. Polymers and Functional Materials Division and CSIR-Indian Institute of Chemical Technology, Hyderabad, 500007, Telangana, India;2. Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India;3. School of Chemical Sciences, Goa University, Taleigao Plateau, 403206, Goa, India;4. School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, 431606, Maharashtra, India;5. Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria, 3216, Australia;6. ARC Centre of Excellence in Exciton Science, School of Chemistry, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria, 3052, Australia;7. Department of Physics, The LNM Institute of Information Technology, Jamdoli, 302031, Jaipur, India |
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| Abstract: | The importance of device structure and active-layer processing when screening non-fullerene acceptors was demonstrated through the organic solar cell device performance optimization of a solution processable non-fullerene, all small-molecule bulk heterojunction (BHJ) blend. Key tuning parameters were identified; notably, the largest improvement in performance was achieved by switching from the conventional device architecture (ITO/PEDOT:PSS/D-A BHJ/Ca/Al) to an inverted structure (ITO/ZnO/D-A BHJ/MoOx/Ag), approximately doubling the power conversion efficiency from best cells of 0.5%–1.0%, demonstrating the importance of investigating more than a single architecture when screening novel non-fullerene acceptors. |
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| Keywords: | Organic semiconductors Organic solar cells Organic photovoltaics Small-molecules Electron acceptors Non-fullerene |
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