Mechanistic insights into the key role of methylammonium iodide in the stability of perovskite materials

Sabahi, Negin; Shahroosvand, Hashem

doi:10.1039/d3ra01304a

RSC Adv.

2023

DOI: 10.1039/d3ra01304a

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Mechanistic insights into the key role of methylammonium iodide in the stability of perovskite materials

Negin Sabahi

Hashem Shahroosvand

Abstract: The possible mechanisms damaging perovskite solar cells have attracted considerable attention in the photovoltaic community.

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2024

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Cited by 2 publications

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Water‐Based Recycling Process of FTO/SnO₂ Substrate for Sustainable Perovskite Solar Cell Technology

Gunasekara,

Chiu,

Senanayeke

et al. 2024

ChemSusChem

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Fluorine‐doped tin oxide (FTO) substrate is an important and expensive component in perovskite solar cells (PSCs), which accounts for up to 40% of a typical PSC raw material cost. In this study, we investigated the recyclability of SnO2/FTO in PSCs by washing the spent PSCs using different solvent such as dimethylformamide (DMF), dimethylsulfoxide (DMSO), acetone, water, and acetone/water mixture. Characterisation of properties of the SnO2/FTO substrates recovered from the PSC show the surface wettability of SnO2/FTO is largely unchanged with water washing while a higher hydrophobicity is obtained with organic solvent washing. Comparison of electronic properties of the SnO2/FTO substrate shows a downward shift of the conduction band by 180 meV with water washing, creating favourable energy alignment with adjacent perovskite for efficient interfacial charge injection. Consequently, PSCs using the water‐based recycled SnO2/FTO substrates produced a high power conversion efficiency (PCE) of 19.33% which is comparable to the device using fresh SnO2/FTO substrate (PCE = 19.85%). Furthermore, we demonstrated that the water washing process could retain property of SnO2/FTO substrate for decent PSC performance up to four recycling cycles. This study opens new avenues towards recycling of valuable FTO substrates in PSCs for increased sustainability and cost‐effectiveness.

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Water‐Based Recycling Process of FTO/SnO₂ Substrate for Sustainable Perovskite Solar Cell Technology

Gunasekara,

Chiu,

Senanayeke

et al. 2024

ChemSusChem

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Discrete Hexa- and Binuclear Heterometallic Iodobismuthate(III) Complexes with Cu(I) and Ag(I)

Shentseva,

Usoltsev,

Korobeynikov

et al. 2024

Inorg. Chem.

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The rare examples of discrete anionic halobismuthates(III) with group 11 elements were obtained. Those are (3-MePyH) 6 [Bi 4 Cu 2 I 20 ] (1) and (3,5-MePyC 6 ) 3 [BiAgI 7 ] 2 (2) (3-MePyH = 3-methylpyridinium cation, 3,5-MePyC 6 =1,6bis(3,5-dimethylpyridinium)hexane dication). Both complexes were isolated as pure phases; the optical band gaps for 1 and 2 are 1.75 and 2.23 eV, respectively. 1 features one of the lowest optical band gap values among Bi/ Cu clusters. ■ EXPERIMENTAL SECTION Starting Materials. All starting components (Bi 2 O 3 , CuI, Ag 2 O, and 2,6-diMePy) were purchased from commercial sources and used without purification. 1,6-Bis(3,5-dimethylpyridinium)hexane dibromide ({(3,5-diMePy)(CH 2 ) 6 (3,5-diMePy)}Br 2 ) was synthesized via reaction between 3,5-dimethylpyridine and corresponding 1,6dibromohexane in acetonitrile. All syntheses were conducted in air.In all experiments, concentrated HI was used.Synthesis of 1 and 2. For 1, 46.6 mg (0.1 mmol) of Bi 2 O 3 and 39 μL (0.3 mmol) of 3-methylpyridinium were mixed in 1 mL of concentrated HI. The resulting solution was evaporated to dryness. Nineteen mg of CuI (0.1 mmol) was added to the residue and was dissolved in 3 mL of acetonitrile/acetone mixture (1:1) upon heating at 70 °C for 1 h. After complete dissolution of reactants, the solution was slowly cooled to room temperature. In 24 h, dark-red crystals formed. Yield: 72%.For 2, 23.3 mg (0.05 mmol) of Bi 2 O 3 , 11.6 mg of Ag 2 O (0.05 mmol), and 45 mg (0.1 mmol) of (3,5-MePy) 2 (CH 2 ) 6 Br 2 were dissolved in 7 mL of concentrated HI and acetonitrile mixture (3:4) upon heating 70 °C for 1 h. After complete dissolution of reactants, the solution was slowly cooled to room temperature. In 24 h, orange crystals formed. Yield: 76%.X-ray Diffractometry. The diffraction data for 1 and 2 were collected on a Bruker D8 Venture diffractometer (0.5°ω-and φscans, fixed-χ three circle goniometer, CMOS PHOTON III detector, Mo−I□S 3.0 microfocus source, focusing Montel mirrors, λ =

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Mechanistic insights into the key role of methylammonium iodide in the stability of perovskite materials

Abstract: The possible mechanisms damaging perovskite solar cells have attracted considerable attention in the photovoltaic community.

Cited by 2 publications

References 45 publications

Water‐Based Recycling Process of FTO/SnO₂ Substrate for Sustainable Perovskite Solar Cell Technology

Water‐Based Recycling Process of FTO/SnO₂ Substrate for Sustainable Perovskite Solar Cell Technology

Discrete Hexa- and Binuclear Heterometallic Iodobismuthate(III) Complexes with Cu(I) and Ag(I)

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Mechanistic insights into the key role of methylammonium iodide in the stability of perovskite materials

Abstract: The possible mechanisms damaging perovskite solar cells have attracted considerable attention in the photovoltaic community.

Cited by 2 publications

References 45 publications

Water‐Based Recycling Process of FTO/SnO2 Substrate for Sustainable Perovskite Solar Cell Technology

Water‐Based Recycling Process of FTO/SnO2 Substrate for Sustainable Perovskite Solar Cell Technology

Discrete Hexa- and Binuclear Heterometallic Iodobismuthate(III) Complexes with Cu(I) and Ag(I)

Contact Info

Product

Resources

About

Water‐Based Recycling Process of FTO/SnO₂ Substrate for Sustainable Perovskite Solar Cell Technology

Water‐Based Recycling Process of FTO/SnO₂ Substrate for Sustainable Perovskite Solar Cell Technology