Water-based solar cells over 10% efficiency: designing soft nanoparticles for improved processability

Holmes, Alexandre; Laval, Hugo; Guizzardi, Michele; Maruzzo, Valentina; Folpini, Giulia; Barbero, Nadia; Deniau, Elise; Schmutz, Marc; Blanc, Sylvie; Petrozza, Annamaria; Paternò, Giuseppe Maria; Wantz, Guillaume; Chambon, Sylvain; Lartigau-Dagron, Christine; Bousquet, Antoine

doi:10.1039/d3ee03744d

Cited by 7 publications

(1 citation statement)

References 51 publications

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“…To date, the best PCEs reported for fully water-processing OSCs with NPs from donor:acceptor blends are only around 10%, and they are limited by their inadequate microstructures and residual surfactant in the active layer. 24,25 Therefore, our recent trial attempted to combine water-processing with the LBL strategy for fabricating high-performance OSCs. 26 Here, we incorporated a water-processed mesostructured NP (mn) layer that allowed a thorough interdiffusion between the bottom and top layers during the solution-processing of the acceptor.…”

Section: Introductionmentioning

confidence: 99%

Water-based layer-by-layer processing enables 19% efficient binary organic solar cells with minimized thickness sensitivity

Xie,

Zeng,

et al. 2024

Energy Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

Water-based layer-by-layer processing enables 19% efficient binary organic solar cells with minimized thickness sensitivity

Xie,

Zeng,

et al. 2024

Energy Environ. Sci.

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Sustainable Solution Processing Toward High‐Efficiency Organic Solar Cells: A Comprehensive Review of Materials, Strategies, and Applications

Ma,

Yan,

et al. 2024

Adv Funct Materials

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Organic solar cells (OSCs) have emerged as promising candidates for renewable energy harvesting due to their lightweight, flexible, and low‐cost fabrication potential. The efficiency of OSCs is largely determined by the choice of solvents, which significantly affect the film morphology of the active layers, the intermixed donor‐acceptor domains, and overall device performance. Beginning with an introduction to the importance of solvent selection, the screening and classification of solvents, emphasizing their characteristics and classification based on sustainability, solubility, and other additional considerations are explored. Various non‐halogenated solvents, highlighting commonly used aromatic solvents, biomass‐derived solvents, and water/alcohol‐based solvents are explored. The state‐of‐the‐art donor and acceptor materials, focusing on efficient donor materials such as PM6 and D18, and high‐performing Y‐series acceptors are also presented. Strategies for developing high‐performance OSCs processed using non‐halogenated solvents are examined, including solvent engineering with additive and additive‐free approaches, ternary strategies, and layer‐by‐layer techniques. The fabrication of large‐area devices using non‐halogenated solvents is addressed, focusing on blade‐coating, slot‐coating, and other processing techniques. Finally, this review outlines future research directions in the non‐halogenated solvent processing of OSCs, emphasizing the need for continuous innovation to overcome existing limitations and propel OSC technology toward commercial viability.

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Organic Nano‐Junctions: Linking Nanomorphology and Charge Transport in Organic Semiconductor Nanoparticles for Organic Photovoltaic Devices

Laval,

Tian,

Lafranconi

et al. 2024

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In this study, innovative nanoscale devices are developed to investigate the charge transport in organic semiconductor nanoparticles. Using different steps of lithography techniques and dielectrophoresis, planar organic nano‐junctions are fabricated from which hole mobilities are extracted in a space charge‐limited current regime. Subsequently, these devices are used to investigate the impact of the composition and morphology of organic semiconductor nanoparticles on the charge mobilities. Pure donor nanoparticles and composite donor:acceptor nanoparticles with different donor compositions in their shell are inserted in the nanogap electrode to form the nano‐junctions. The results highlight that the hole mobilities in the composite nanoparticles decrease by two‐fold compared to pure donor nanoparticles. However, no significant change between the two kinds of composite nanoparticle morphologies is observed, indicating that conduction pathways for the holes are as efficient for donor proportion in the shell from 40% to 60%. Organic photovoltaic (OPV) devices are fabricated from water‐based colloidal inks containing the two composite nanoparticles (P3HT:eh‐IDTBR and P3HT:o‐IDTBR) and no significant change in the performances is observed in accordance with the mobility results. Through this study, the performance of OPV devices have been succesfully correlated to the transport properties of nanoparticles having different morphology via innovative nanoscale devices.

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Water-based solar cells over 10% efficiency: designing soft nanoparticles for improved processability

Abstract: Organic semiconductors are typically dissolved in organic solvents that are harmful to human health and the environment. To overcome this issue, these materials can be dispersed in water as nanoparticles...

Cited by 7 publications

References 51 publications

Water-based layer-by-layer processing enables 19% efficient binary organic solar cells with minimized thickness sensitivity

Water-based layer-by-layer processing enables 19% efficient binary organic solar cells with minimized thickness sensitivity

Sustainable Solution Processing Toward High‐Efficiency Organic Solar Cells: A Comprehensive Review of Materials, Strategies, and Applications

Organic Nano‐Junctions: Linking Nanomorphology and Charge Transport in Organic Semiconductor Nanoparticles for Organic Photovoltaic Devices

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