All Slot‐Die Coated Non‐Fullerene Organic Solar Cells with PCE 11%. (29th January 2021)

• Record Type: Journal Article
• Authors: Chaturvedi, Neha; Gasparini, Nicola; Corzo, Daniel; Bertrandie, Jules; Wehbe, Nimer; Troughton, Joel; Baran, Derya
• Is Part Of: Advanced functional materials. Volume 31:Number 14(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-01-29
• Subjects: large area solar cells -- non‐fullerene acceptors -- organic solar cells -- semi‐transparent solar cells -- slot‐die coating; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202009996
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Slot‐die (SD) coating is used to fabricate fully solution processed organic solar cells (OSCs) based on a blend of high performance donor polymer (PTB7‐Th) and a non‐fullerene acceptor (IEICO‐4F) for stable devices over extended periods of operation. The optimization of a sequential deposition process of transport and active layers, under ambient conditions, enable high efficiency slot‐die coated solar cells with remarkable power conversion efficiencies (PCE) > 11.0% to bridge the gap between lab‐to‐fab. Fully slot‐die coated inverted OSCs are demonstrated with efficiencies reaching 11% along with 1 cm 2 devices, proving the scalability and reproducibility of the proposed technique. Further, replacing the evaporated Ag electrode with solution processed Ag nanowire (AgNW) electrodes shows the highest light utilization efficiency of 5.26% for semi‐transparent OSC with a PCE of 9.07% and average visible transmission of 58%. Abstract : Slot die coating is used to fabricate high efficiency (power conversion efficiencies (PCE) > 11.0%), stable organic solar cells based on a donor PTB7‐Th and nonfullerene acceptor IEICO‐4F. The 11% small area and 1 cm 2 devices with a PCE of 9.63% show the scalability of the technique. The highest light utilization efficiency of 5.26% with a PCE of 9.07% is achieved for the all solution processed semi‐transparent solar cell.