Printing fabrication of large-area non-fullerene organic solar cells

Xue, Peiyao; Cheng, Pei; Han, Ray P. S.; Zhan, Xiaowei

doi:10.1039/d1mh01317c

Cited by 89 publications

(55 citation statements)

References 169 publications

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“…(2) The effects of processing methods on morphology and device performance [ 125‐126 ] and fabrication technologies adapting to large‐area, flexible and semitransparent devices/modules should be further explored (Figure 11b). [ 116,127‐128 ] (3) Based on the unique features of OSC such as light weight, flexibility and semitransparency, integration of OSC with other devices ( e.g ., battery, supercapacitor, sensor) or into certain scenarios ( e.g ., greenhouse, window, roof, facade) can make a breakthrough in commercialization of OSC. Through interdisciplinary efforts, new prosperity and practical application of OSC can be expected in the near future.…”

Section: Discussionmentioning

confidence: 99%

From Perylene Diimide Polymers to Fused‐Ring Electron Acceptors: A 15‐Year Exploration Journey of Nonfullerene Acceptors

Wang

Zhan

2022

Chin. J. Chem.

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Comprehensive Summary Fullerene derivatives are classic electron acceptor materials for organic solar cells (OSCs) but possess some intrinsic drawbacks such as weak visible light absorption, limited optoelectronic property tunability, difficult purification and photochemical/morphological instability. Fullerene acceptors are a bottleneck restricting further development of this field. Our group pioneered the exploration of novel nonfullerene acceptors in China in 2006, and initiated the research of two representative acceptor systems, rylene diimide polymer and fused‐ring electron acceptor (FREA). FREA breaks the theoretical efficiency limit of fullerene‐based OSCs (~13%) and promotes the whole field to an unprecedented prosperity with efficiency of 20%, heralding a nonfullerene era for OSCs. In this review, we revisit 15‐year nonfullerene exploration journey, summarize the design principles, molecular engineering strategies, physical mechanisms and device applications of these two nonfullerene acceptor systems, and propose some possible research topics in the near future. What is the most favorite and original chemistry developed in your research group? Fused‐ring electron acceptor for photovoltaics. How do you get into this specific field? Could you please share some experiences with our readers? In 2006 when I came back to ICCAS from USA and started my independent academic career, I was interested in organic photovoltaics (OPV) which I had never touched before since I believed it is useful and should have a bright future. OPV converts renewable solar energy to clean electricity through photovoltaic effect. The active layer in OPV device consists of electron donor and electron acceptor. Although fullerenes were prevailing acceptor materials in OPV at that time, I doubted if this choice is correct considering their fatal flaws such as weak absorption. I was curious about why no research groups in China explored fullerene alternatives before 2006. In 2006 our group initiated the nonfullerene OPV research of China. In 2015 we invented the milestone molecule ITIC and pioneered fused‐ring electron acceptor (FREA). Around 300 research groups in >20 countries have utilized the FREA to fabricate high‐efficiency OPV devices with champion efficiency of >20%. The FREA has subverted previously predominant fullerenes, and is inaugurating a new era of the OPV field. How do you supervise your students? I expect that my students should have some essential personalities such as curiosity, creativity, devotion, persistence and diligence. I encourage them to do original, unique and leading research. I endow them with cheerful academic atmosphere such as self‐motivation, open‐mindedness and cross‐cooperation. I would like to provide them with warm human solicitude when they need help or suffer from bitterness. What is the most important personality for scientific research? Curiosity; uniqueness; persistence.

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Section: Discussionmentioning

confidence: 99%

From Perylene Diimide Polymers to Fused‐Ring Electron Acceptors: A 15‐Year Exploration Journey of Nonfullerene Acceptors

Wang

Zhan

2022

Chin. J. Chem.

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“…Intending to achieve high efficiencies using scalable techniques for the manufacture of ChemRxiv TM -Pre-print OSCs, we hope to contribute to closing the "lab-to-fab gap" and finally bring this technology to the edge of commercialization. 12,14 For the first time, slot-die coated flexible devices based on PM6:Y6 were fabricated in open-air, with efficiencies up to 7% when paired with fullerene acceptors in a ternary device. After more than 1000 h of storage, the devices suffer almost no degradation, keeping over 99% of the initial efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…However, a large efficiency gap is still to be overcome between solar cells produced with lab-scale techniques and the ones produced using industrial-compatible processes. [12][13][14] The most reliable scalable fabrication techniques for OSCs are slotdie coating, blade-coating, or even spray and aerosol coating, due to their compatibility with roll-to-roll manufacturing. However, slot-die coating is preferred, as it is possible to coat with a one-dimensional pattern in the form of one or more stripes with a well-defined width and with almost no material waste.…”

Section: Introductionmentioning

confidence: 99%

Environmentally friendly and roll-processed flexible organic solar cells based on PM6:Y6.

Castro

Truer

Espíndola‐Rodríguez

et al. 2021

Preprint

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Organic Solar Cells (OSCs) have reached the highest efficiencies using lab-scale on active areas far below 0.1 cm2. This tends to widen the so-called “lab-to-fab gap”, which is one of the most important challenges to make OSCs competitive. The most commonly used fabrication technique is spin-coating, which has poor compatibility with large-scale techniques and substantial material waste. Moreover, other techniques such as blade or slot-die coating are much more suitable for roll-to-roll manufacturing processes, which is one of the advantages the technology has compared, for example, to silicon solar cells. However, only a few studies report solar cells using these fabrication techniques. Additionally, for the environmentally friendly OSC scale-up, inks based on non-hazardous solvent systems are needed. In this work, slot-die coating has been chosen to coat the PM6:Y6 active layer, using o-xylene, a green solvent, without additives. The optimal coating parameters are defined through fine-tuning of the coating parameters, such as the drying temperature and solution concentration. Moreover, ternary devices with PCBM, and fully printed devices are also fabricated. Power conversion efficiencies of 6.26% and 7.16% are achieved for binary PM6:Y6 and ternary PM6:Y6:PCBM devices, respectively.

show abstract

“…However, a large efficiency gap is still to be overcome between solar cells produced with lab-scale techniques and the ones produced using industry-compatible processes. [12][13][14] The most reliable scalable fabrication techniques for OSCs are slot-die coating, blade-coating, or even spray and aerosol coating, due to their compatibility with roll-to-roll manufacturing. However, slot-die coating is preferred, as it is possible to coat with a one-dimensional pattern in the form of one or more stripes with a well-defined width and with almost no material waste.…”

Section: Introductionmentioning

confidence: 99%

“…Intending to achieve high efficiencies using scalable techniques for the manufacture of OSCs, we hope to contribute to reducing the "lab-to-fab gap" and finally bring this technology to the edge of commercialization. 12,14 For the first time, slot-die coated flexible devices based on PM6:Y6 were fabricated in open-air, with efficiencies up to 7% when paired with fullerene acceptors in a ternary device. After more than 1000 h of storage, the devices suffer almost no degradation, keeping over 99% of the initial efficiency.…”

Section: Introductionmentioning

confidence: 99%

Environmentally friendly and roll-processed flexible organic solar cells based on PM6:Y6.

Castro

Truer

Espíndola‐Rodríguez

et al. 2021

Preprint

View full text Add to dashboard Cite

Organic Solar Cells (OSCs) have reached the highest efficiencies using lab-scale on active areas far below 0.1 cm^2. This tends to widen the so-called “lab-to-fab gap”, which is one of the most important challenges to make OSCs competitive. The most commonly used fabrication technique is spin-coating, which has poor compatibility with large-scale techniques and substantial material waste. Moreover, other techniques such as blade or slot-die coating are much more suitable for roll-to-roll manufacturing processes, which is one of the advantages the technology has compared, for example, to silicon solar cells. However, only a few studies report solar cells using these fabrication techniques. Additionally, for the environmentally friendly OSC scale-up, inks based on non-hazardous solvent systems are needed. In this work, slot-die coating has been chosen to coat the PM6:Y6 active layer, using o-xylene, a green solvent, without additives. The optimal coating parameters are defined through fine-tuning of the coating parameters, such as the drying temperature and solution concentration. Moreover, ternary devices with PCBM, and fully printed devices are also fabricated. Power conversion efficiencies of 6.26% and 7.16% are achieved for binary PM6:Y6 and ternary PM6:Y6:PCBM devices, respectively.

show abstract

Printing fabrication of large-area non-fullerene organic solar cells

Abstract: Organic solar cells (OSCs) based on a bulk heterojunction structure exhibit inherent advantages, such as low cost, light weight, mechanical flexibility, easy processing, and they are emerging as a potential...

Cited by 89 publications

References 169 publications

From Perylene Diimide Polymers to Fused‐Ring Electron Acceptors: A 15‐Year Exploration Journey of Nonfullerene Acceptors

From Perylene Diimide Polymers to Fused‐Ring Electron Acceptors: A 15‐Year Exploration Journey of Nonfullerene Acceptors

Environmentally friendly and roll-processed flexible organic solar cells based on PM6:Y6.

Environmentally friendly and roll-processed flexible organic solar cells based on PM6:Y6.

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