Sustainable solvent selection for the manufacture of methylammonium lead triiodide (MAPbI<sub>3</sub>) perovskite solar cells

Doolin, Alexander; Charles, Rhys G.; Castro, Catherine S. P. De; García-Rodríguez, Rodrigo; Péan, Emmanuel V.; Patidar, Rahul; Dunlop, Tom; Charbonneau, Cécile; Watson, Trystan; Davies, Matthew

doi:10.1039/d1gc00079a

Cited by 54 publications

(58 citation statements)

References 70 publications

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“…A conventional perovskite precursor solution is made of high purity lead halide salts, organic or inorganic ammonium salts, dissolved in toxic polar aprotic solvents (e.g., dimethylformamide (DMF), dimethylacetamide (DMAc), N -methyl-2-pyrrolidone (NMP), etc.) 8 and other high-boiling point solvents such as DMSO in high concentration 5 , 13 . Although few green solvents have been developed to replace these toxic solvents, the resulting device performance is still not comparable with that of the DMF-based precursor 13 .…”

Section: Introductionmentioning

confidence: 99%

A universal co-solvent dilution strategy enables facile and cost-effective fabrication of perovskite photovoltaics

et al. 2022

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Cost management and toxic waste generation are two key issues that must be addressed before the commercialization of perovskite optoelectronic devices. We report a groundbreaking strategy for eco-friendly and cost-effective fabrication of highly efficient perovskite solar cells. This strategy involves the usage of a high volatility co-solvent, which dilutes perovskite precursors to a lower concentration (<0.5 M) while retaining similar film quality and device performance as a high concentration (>1.4 M) solution. More than 70% of toxic waste and material cost can be reduced. Mechanistic insights reveal ultra-rapid evaporation of the co-solvent together with beneficial alteration of the precursor colloidal chemistry upon dilution with co-solvent, which in-situ studies and theoretical simulations confirm. The co-solvent tuned precursor colloidal properties also contribute to the enhancement of the stability of precursor solution, which extends its processing window thus minimizing the waste. This strategy is universally successful across different perovskite compositions, and scales from small devices to large-scale modules using industrial spin-coating, potentially easing the lab-to-fab translation of perovskite technologies.

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Section: Introductionmentioning

confidence: 99%

A universal co-solvent dilution strategy enables facile and cost-effective fabrication of perovskite photovoltaics

et al. 2022

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“…In this case, the solubility enhancement is about 5300 times higher compared to water at room temperature. According to several reports, DMSO is considered as a green solvent [83][84][85]. Noteworthily, DMSO has been widely applied in the pharmaceutical industry [86].…”

Section: Sulfamethizole Solubilitymentioning

confidence: 99%

Experimental and Theoretical Screening for Green Solvents Improving Sulfamethizole Solubility

2021

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Solubility enhancement of poorly soluble active pharmaceutical ingredients is of crucial importance for drug development and processing. Extensive experimental screening is limited due to the vast number of potential solvent combinations. Hence, theoretical models can offer valuable hints for guiding experiments aimed at providing solubility data. In this paper, we explore the possibility of applying quantum-chemistry-derived molecular descriptors, adequate for development of an ensemble of neural networks model (ENNM), for solubility computations of sulfamethizole (SMT) in neat and aqueous binary solvent mixtures. The machine learning procedure utilized information encoded in σ-potential profiles computed using the COSMO-RS approach. The resulting nonlinear model is accurate in backcomputing SMT solubility and allowed for extensive screening of green solvents. Since the experimental characteristics of SMT solubility are limited, the data pool was extended by new solubility measurements in water, five neat organic solvents (acetonitrile, N,N-dimethylformamide, dimethyl sulfoxide, 1,4-dioxane, and methanol), and their aqueous binary mixtures at 298.15, 303.15, 308.15, and 313.15 K. Experimentally determined order of decreasing SMT solubility in neat solvents is the following: N,N-dimethylformamide > dimethyl sulfoxide > methanol > acetonitrile > 1,4dioxane >> water, in all studied temperatures. Similar trends are observed for aqueous binary mixtures. Since N,N-dimethylformamide is not considered as a green solvent, the more acceptable replacers were searched for using the developed model. This step led to the conclusion that 4-formylmorpholine is a real alternative to N,N-dimethylformamide, fulfilling all requirements of both high dissolution potential and environmental friendliness.

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“…Other CPSCs rely mostly on precursors with highly toxic DMF solvent mixes, which are environmentally harmful and present significant health risks at scale. [21][22][23] Previous work introduced g-valerolactone (GVL) as a sustainable, non-toxic, green alternative to GBL. 24 Optimised precursor concentrations (1.1 M) and annealing temperatures (45 1C) were shown to produce AVA-containing MAPbI 3 devices of comparable performance and stability to standard GBL precursors, with devices achieving a champion PCE of 12.9% in a 1 cm 2 active area.…”

Section: Introductionmentioning

confidence: 99%

Green solvent engineering for enhanced performance and reproducibility in printed carbon-based mesoscopic perovskite solar cells and modules

et al. 2022

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Sustainable solvent selection for the manufacture of methylammonium lead triiodide (MAPbI₃) perovskite solar cells

Abstract: Perovskite solar cells have emerged as a promising and highly efficient solar technology. Despite efficiencies continuing to climb, the prospect of industrial manufacture is hampered by concerns regarding the safety...

Cited by 54 publications

References 70 publications

A universal co-solvent dilution strategy enables facile and cost-effective fabrication of perovskite photovoltaics

A universal co-solvent dilution strategy enables facile and cost-effective fabrication of perovskite photovoltaics

Experimental and Theoretical Screening for Green Solvents Improving Sulfamethizole Solubility

Green solvent engineering for enhanced performance and reproducibility in printed carbon-based mesoscopic perovskite solar cells and modules

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Sustainable solvent selection for the manufacture of methylammonium lead triiodide (MAPbI3) perovskite solar cells

Abstract: Perovskite solar cells have emerged as a promising and highly efficient solar technology. Despite efficiencies continuing to climb, the prospect of industrial manufacture is hampered by concerns regarding the safety...

Cited by 54 publications

References 70 publications

A universal co-solvent dilution strategy enables facile and cost-effective fabrication of perovskite photovoltaics

A universal co-solvent dilution strategy enables facile and cost-effective fabrication of perovskite photovoltaics

Experimental and Theoretical Screening for Green Solvents Improving Sulfamethizole Solubility

Green solvent engineering for enhanced performance and reproducibility in printed carbon-based mesoscopic perovskite solar cells and modules

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Sustainable solvent selection for the manufacture of methylammonium lead triiodide (MAPbI₃) perovskite solar cells