Solubility of Hybrid Halide Perovskites in DMF and DMSO

Petrov, Andrey A.; Ordinartsev, Artem A.; Fateev, Sergey A.; Goodilin, Eugene A.; Tarasov, Alexey B.

doi:10.3390/molecules26247541

Cited by 20 publications

(18 citation statements)

References 24 publications

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“…19 Finally, considering the solvent system, the combination of DMF and DMSO has been the most popular system for most of the published compositions for spin-coating due to the high solubility. 20 However, without the usage of antisolvents, DMSO has been detrimental in scaling to large area deposition assisted by N 2 quenching. There are also two works reported for tandem solar cells fabricated by printing techniques.…”

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confidence: 99%

Slot-Die Coated Triple-Halide Perovskites for Efficient and Scalable Perovskite/Silicon Tandem Solar Cells

Al‐Ashouri

Peng

et al. 2022

ACS Energy Lett.

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Wide bandgap halide perovskite materials show promising potential to pair with silicon bottom cells. To date, most efficient wide bandgap perovskites layers are fabricated by spin-coating, which is difficult to scale up. Here, we report on slot-die coating for an efficient, 1.68 eV wide bandgap triple-halide (3halide) perovskite absorber, (Cs 0.22 FA 0.78 )Pb(I 0.85 Br 0.15 ) 3 + 5 mol % MAPbCl 3 . A suitable solvent system is designed specifically for the slot-die coating technique. We demonstrate that our fabrication route is suitable for tandem solar cells without phase segregation. The slot-die coated wet halide perovskite is dried by a “nitrogen (N 2 )-knife” with high reproducibility and avoiding antisolvents. We explore varying annealing conditions and identify parameters allowing crystallization of the perovskite film into large grains reducing charge collection losses and enabling higher current density. At 150 °C, an optimized trade-off between crystallization and the PbI 2 aggregates on the film’s top surface is found. Thus, we improve the cell stability and performance of both single-junction cells and tandems. Combining the 3halide top cells with a 120 μm thin saw damage etched commercial Czochralski industrial wafer, a 2-terminal monolithic tandem solar cell with a PCE of 25.2% on a 1 cm 2 active area is demonstrated with fully scalable processes.

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confidence: 99%

Slot-Die Coated Triple-Halide Perovskites for Efficient and Scalable Perovskite/Silicon Tandem Solar Cells

Al‐Ashouri

Peng

et al. 2022

ACS Energy Lett.

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“…Dimethyl sulfoxide (DMSO) was added to the precursor solution as a cosolvent due to the low solubility of lead halide in the DMF solvent. 31 By adopting a Lewis base strategy in the formation of 2D chiral OIHPs, we fabricated chiral OIHPs in the presence of a typical O-donor Lewis base in which either DMSO (hereafter DMSO only) or DMSO + urea (hereafter urea for simplicity) was added in the precursor solution.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Because the metal halide in OIHPs (e.g., Pb(II) halide, Sn(II) halide), which are well-known Lewis acids, can form a stable intermediate phase with Lewis bases, the high-quality OIHP thin films could be readily obtained by controlled growth kinetics. , The precursor solution for chiral 2D OIHPs was prepared by dissolving PbI 2 , PbBr 2 , and chiral organic ammonium halide salts in cosolvent N , N -dimethylformamide (DMF) (see Experimental Details for a detailed experimental procedure). Dimethyl sulfoxide (DMSO) was added to the precursor solution as a cosolvent due to the low solubility of lead halide in the DMF solvent . By adopting a Lewis base strategy in the formation of 2D chiral OIHPs, we fabricated chiral OIHPs in the presence of a typical O-donor Lewis base in which either DMSO (hereafter DMSO only) or DMSO + urea (hereafter urea for simplicity) was added in the precursor solution.…”

Section: Resultsmentioning

confidence: 99%

Tailoring the Time-Averaged Structure for Polarization-Sensitive Chiral Perovskites

Lee

Ahn

et al. 2022

J. Am. Chem. Soc.

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Chiral perovskites have emerged as promising candidates for polarization-sensing materials. Despite their excellent chiroptical properties, the nature of their multiple-quantum-well structures is a critical hurdle for polarization-based and spintronic applications. Furthermore, as the origin of chiroptical activity in chiral perovskites is still illusive, the strategy for simultaneously enhancing the chiroptical activity and charge transport has not yet been reported. Here, we demonstrated that incorporating a Lewis base into the lattice can effectively tune the chiroptical response and electrical properties of chiral perovskites. Through solid-state nuclear magnetic resonance spectroscopic measurements and theoretical calculations, it was demonstrated that the material property manipulation resulted from the change in the time-averaged structure induced by the Lewis base. Finally, as a preliminary proof of concept, a vertical-type circularly polarized light photodetector based on chiral perovskites was developed, exhibiting an outstanding performance with a distinguishability of 0.27 and a responsivity of 0.43 A W–1.

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“…Moreover, the choice of solvents influences the solubility of the precursor salts and intermediate phases in the solution and in not (yet) fully annealed thin-films. [59] For iodine-rich leadbased perovskite, the solubility of the solvents is in the order DMF > DMSO >> GBL [63][64][65][66] and the coordination ability of Pb 2+ DMSO > DMF >> GBL. [66] Higher solute concentration (or lower solubility) of a precursor salt in the solution would lead to an earlier PL on-set, since the wet-film will reach the solubility limit and the oversaturation state earlier.…”

Section: Nucleation On-set: Ink and Evacuation Ratementioning

confidence: 99%

In Situ Process Monitoring and Multichannel Imaging for Vacuum‐Assisted Growth Control of Inkjet‐Printed and Blade‐Coated Perovskite Thin‐Films

Schackmar

Laufer

Singh

et al. 2022

Adv Materials Technologies

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Vacuum‐assisted growth (VAG) control is one of the most promising methods for controlling nucleation and crystallization of printed and coated large area lead halide perovskite‐based layers for optoelectronics. To coat or print homogeneous high‐quality perovskite thin‐films at high fabrication yield, real‐time process monitoring of the VAG is pivotal. In response, a 2.1‐megapixel multichannel photoluminescence (PL) and reflection imaging system is developed and employed for the simultaneous spatial in situ analysis of drying, nucleation, and crystal growth during VAG and subsequent thermal annealing of inkjet‐printed and blade‐coated perovskite thin‐films. It is shown that the VAG process, for example, evacuation rate and time, affects the film formation and provide detailed insight into traced PL and reflection transients extracted from sub‐second videos of each channel. Based on correlative analysis between the transients and, for example, perovskite ink composition, wet‐film thickness, or evacuation time, key regions which influence crystal quality, film morphology, and are base for prediction of solar cell performance are identified.

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Solubility of Hybrid Halide Perovskites in DMF and DMSO

Cited by 20 publications

References 24 publications

Slot-Die Coated Triple-Halide Perovskites for Efficient and Scalable Perovskite/Silicon Tandem Solar Cells

Slot-Die Coated Triple-Halide Perovskites for Efficient and Scalable Perovskite/Silicon Tandem Solar Cells

Tailoring the Time-Averaged Structure for Polarization-Sensitive Chiral Perovskites

In Situ Process Monitoring and Multichannel Imaging for Vacuum‐Assisted Growth Control of Inkjet‐Printed and Blade‐Coated Perovskite Thin‐Films

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