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Shi Z, Wang Y, Wang Y, Li X, Yue X, Wang H, Zhang X, Deng L, Li C, Wang J, Xie Z, Yang Y, Cong C, Yu A, Zhan Y. Room Temperature Crystallized Phase-Pure α-FAPbI 3 Perovskite with In-Situ Grain-Boundary Passivation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2400275. [PMID: 38504472 DOI: 10.1002/advs.202400275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/04/2024] [Indexed: 03/21/2024]
Abstract
Energy loss in perovskite grain boundaries (GBs) is a primary limitation toward high-efficiency perovskite solar cells (PSCs). Two critical strategies to address this issue are high-quality crystallization and passivation of GBs. However, the established methods are generally carried out discretely due to the complicated mechanisms of grain growth and defect formation. In this study, a combined method is proposed by introducing 3,4,5-Trifluoroaniline iodide (TFAI) into the perovskite precursor. The TFAI triggers the union of nano-sized colloids into microclusters and facilitates the complete phase transition of α-FAPbI3 at room temperature. The controlled chemical reactivity and strong steric hindrance effect enable the fixed location of TFAI and suppress defects at GBs. This combination of well-crystallized perovskite grains and effectively passivated GBs leads to an improvement in the open circuit voltage (Voc ) of PSCs from 1.08 V to 1.17 V, which is one of the highest recorded Voc without interface modification. The TFAI-incorporated device achieved a champion PCE of 24.81%. The device maintained a steady power output near its maximum power output point, showing almost no decay over 280 h testing without pre-processing.
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Affiliation(s)
- Zejiao Shi
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Yaxin Wang
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Yanyan Wang
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Xiaoguo Li
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Xiaofei Yue
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Haoliang Wang
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Xin Zhang
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Liangliang Deng
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Chongyuan Li
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Jiao Wang
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Zuoti Xie
- Department of Materials Science and Engineering, MATEC Guangdong Technion - Israel Institute of Technology, Shantou, Guangdong, 515063, P. R. China
| | - Yinguo Yang
- School of Microelectronics, Fudan University, Shanghai, 200433, P. R. China
| | - Chunxiao Cong
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Anran Yu
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
| | - Yiqiang Zhan
- Center for Micro Nano Systems, School of Information Science and Technology (SIST), Fudan University, Shanghai, 200433, P. R. China
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Dorn RW, Carnahan SL, Cheng CY, Pan L, Hao Z, Rossini AJ. Structural characterization of tin in toothpaste by dynamic nuclear polarization enhanced 119Sn solid-state NMR spectroscopy. Nat Commun 2023; 14:7423. [PMID: 37973961 PMCID: PMC10654397 DOI: 10.1038/s41467-023-42816-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 10/20/2023] [Indexed: 11/19/2023] Open
Abstract
Stannous fluoride (SnF2) is an effective fluoride source and antimicrobial agent that is widely used in commercial toothpaste formulations. The antimicrobial activity of SnF2 is partly attributed to the presence of Sn(II) ions. However, it is challenging to directly determine the Sn speciation and oxidation state within commercially available toothpaste products due to the low weight loading of SnF2 (0.454 wt% SnF2, 0.34 wt% Sn) and the amorphous, semi-solid nature of the toothpaste. Here, we show that dynamic nuclear polarization (DNP) enables 119Sn solid-state NMR experiments that can probe the Sn speciation within commercially available toothpaste. Solid-state NMR experiments on SnF2 and SnF4 show that 19F isotropic chemical shift and 119Sn chemical shift anisotropy (CSA) are highly sensitive to the Sn oxidation state. DNP-enhanced 119Sn magic-angle turning (MAT) 2D NMR spectra of toothpastes resolve Sn(II) and Sn(IV) by their 119Sn chemical shift tensor parameters. Fits of DNP-enhanced 1D 1H → 119Sn solid-state NMR spectra allow the populations of Sn(II) and Sn(IV) within the toothpastes to be estimated. This analysis reveals that three of the four commercially available toothpastes contained at least 80% Sn(II), whereas one of the toothpaste contained a significantly higher amount of Sn(IV).
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Affiliation(s)
- Rick W Dorn
- US Department of Energy Ames National Laboratory, Ames, IA, 50011, USA
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA
| | - Scott L Carnahan
- US Department of Energy Ames National Laboratory, Ames, IA, 50011, USA
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA
| | | | - Long Pan
- Colgate-Palmolive Company, Piscataway, NJ, 08855, USA
| | - Zhigang Hao
- Colgate-Palmolive Company, Piscataway, NJ, 08855, USA.
| | - Aaron J Rossini
- US Department of Energy Ames National Laboratory, Ames, IA, 50011, USA.
- Department of Chemistry, Iowa State University, Ames, IA, 50011, USA.
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King RP, Woodward MS, Grigg J, McRobbie G, Levason W, Reid G. Tin(IV) fluoride complexes with neutral phosphine coordination and comparisons with hard N- and O-donor ligands. Dalton Trans 2021; 50:14400-14410. [PMID: 34569574 DOI: 10.1039/d1dt02948g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of trans-[SnF4(PMe3)2] with one, two or three equivalents of Me3SiO3SCF3 (TMSOTF), respectively, in anhydrous CH2Cl2 form six-coordinate [SnF4-n(PMe3)2(OTf)n] (n = 1-3), which have been characterised by microanalysis, IR and multinuclear NMR (1H, 19F{1H}, 31P{1H} and 119Sn) spectroscopy. The crystal structure of [SnF3(PMe3)2(OTf)] reveals the three fluorines are in a mer-arrangement with mutually trans PMe3 ligands. The multinuclear NMR spectra confirm this structure is retained in solution, and show that [SnF2(PMe3)2(OTf)2] has trans-phosphines, while [SnF(PMe3)2(OTf)3] has trans PMe3 groups and hence mer-triflate ligands. The [SnF4-n(PMe3)2(OTf)n] are unstable in solution and the decomposition products include [Me3PF]+ and the tin(II) complexes [Sn(PMe3)2(OTf)2] and [Sn3F5(OTf)], both of the latter identified by their crystal structures. The reaction of trans-[SnF4(PiPr3)2] containing the bulkier phosphine, with one and two equivalents of TMSOTf produced unstable mono- and bis-triflates, which the NMR data also suggest contain weakly coordinated triflate, [SnF3(PiPr3)2(OTf)] and [SnF2(PiPr3)2(OTf)2], again with axial phosphines, although some OTf dissociation from the former to give [SnF3(PiPr3)2]+ may occur in solution at room temperature. The new phosphine complexes of SnF4, trans-[SnF4(PiPr3)2] and (cis) [SnF4(κ2-triphos)] (triphos = CH3C(CH2PPh2)3) have also been fully characterised, including the crystal structure of [SnF4(κ2-triphos)]. Attempts to promote P3-coordination by further treatment of this complex with TMSOTf were unsuccessful. The [SnF4(L)2] (L = dmso, py, pyNO, DMF, OPPh3) complexes, which exist as mixtures of cis and trans isomers, react with one equivalent of TMSOTf, followed by addition of one equivalent of L, to form the ionic [SnF3(L)3][OTf] complexes, which were characterised by microanalysis, IR and multinuclear NMR spectroscopy. In nitromethane solution they are a mixture of mer and fac isomers based upon multinuclear NMR data (1H, 19F{1H}, 119Sn). Reaction of [SnF4(OPPh3)2] with two equivalents of TMSOTf and further OPPh3 produced [SnF2(OPPh3)4][OTf]2, which is a mixture of cis and trans isomers in solution. The crystal structure of [SnF2(OPPh3)4][OTf]2 confirms the trans isomer in the solid state, with the triflate ionic. These complexes are rare examples of fluorotin(IV) cations with neutral monodentate ligands.
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Affiliation(s)
- Rhys P King
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK.
| | | | - Julian Grigg
- GE Healthcare, Pollards Wood, Nightingales Lane, Chalfont St Giles, Bucks, HP8 4SP, UK
| | - Graeme McRobbie
- GE Healthcare, Pollards Wood, Nightingales Lane, Chalfont St Giles, Bucks, HP8 4SP, UK
| | - William Levason
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK.
| | - Gillian Reid
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK.
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Galy J, Matar SF. Joint stereochemical and ab initio overview of SnII electron lone pairs (E) and F−(E) triplets effects on the crystal networks, the bonding and the electronic structures in a family of tin fluorides. PROG SOLID STATE CH 2019. [DOI: 10.1016/j.progsolidstchem.2019.100252] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Bandemehr J, Conrad M, Kraus F. Redetermination of the crystal structure of NbF4. Acta Crystallogr E Crystallogr Commun 2016; 72:1211-3. [PMID: 27536416 PMCID: PMC4971875 DOI: 10.1107/s2056989016012081] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2016] [Accepted: 07/25/2016] [Indexed: 11/22/2022]
Abstract
Single crystals of NbF4, niobium(IV) tetra-fluoride, were synthesized by disproportionation of Nb2F5 at 1273 K in a sealed niobium tube, extracted and studied by single-crystal X-ray diffraction. Previous reports on the crystal structure of NbF4 were based on X-ray powder diffraction data and the observed isotypicity to SnF4 [Gortsema & Didchenko (1965 ▸). Inorg. Chem. 4, 182-186; Schäfer et al. (1965 ▸). J. Less Common Met. 9, 95-104]. The data obtained from a single-crystal X-ray diffraction study meant the atomic coordinates could now be refined as well as their anisotropic displacement parameters, leading to a significant improvement of the structural model of NbF4. In the structure, the Nb atom is octahedron-like surrounded by six F atoms of which four are bridging to other NbF6 octa-hedra, leading to a layer structure extending parallel to the ab plane.
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Affiliation(s)
- Jascha Bandemehr
- Anorganische Chemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Matthias Conrad
- Anorganische Chemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Florian Kraus
- Anorganische Chemie, Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
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England J, Wieghardt K. 2,2′-Bipyridine Compounds of Group 14 Elements: A Density Functional Theory Study. Inorg Chem 2013; 52:10067-79. [DOI: 10.1021/ic401375a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jason England
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36,
D-45470 Mülheim an der Ruhr, Germany
| | - Karl Wieghardt
- Max Planck Institute for Chemical Energy Conversion, Stiftstrasse 34-36,
D-45470 Mülheim an der Ruhr, Germany
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Sanhoury MA, Ben Dhia MT, Khaddar MR. Synthesis and characterization of tin tetrafluoride adducts with fluoroalkyl phosphoryl ligands. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2012.12.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sanhoury MA, Ben Dhia MT, Khaddar MR. Synthesis, characterization and solution behaviour of phosphoryl complexes of tin tetrafluoride. J Fluor Chem 2011. [DOI: 10.1016/j.jfluchem.2011.06.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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George K, Hector AL, Levason W, Reid G, Sanderson G, Webster M, Zhang W. Hypervalent neutral O-donor ligand complexes of silicon tetrafluoride, comparisons with other group 14 tetrafluorides and a search for soft donor ligand complexes. Dalton Trans 2011; 40:1584-93. [DOI: 10.1039/c0dt01115k] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Marukhnov AV, Pushkin DV, Serezhkin VN. Coordination polyhedra PbX n (X = F, Cl, Br, I) in crystal structures. RUSS J COORD CHEM+ 2008. [DOI: 10.1134/s1070328408080034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Davis MF, Levason W, Reid G, Webster M, Zhang W. The first examples of germanium tetrafluoride and tin tetrafluoride complexes with soft thioether coordination—synthesis, properties and crystal structures. Dalton Trans 2008:533-8. [DOI: 10.1039/b713316b] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Davis MF, Clarke M, Levason W, Reid G, Webster M. Tin(IV) Fluoride Complexes with Tertiary Phosphane Ligands – A Comparison of Hard and Soft Donor Ligands. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600202] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Synthesis and characterisation of tin(IV) fluoride complexes of phosphine and arsine oxide ligands. Polyhedron 2006. [DOI: 10.1016/j.poly.2005.10.024] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Feng J, Grochala W, Jaroń T, Hoffmann R, Bergara A, Ashcroft NW. Structures and potential superconductivity in at high pressure: en route to "metallic hydrogen". PHYSICAL REVIEW LETTERS 2006; 96:017006. [PMID: 16486503 DOI: 10.1103/physrevlett.96.017006] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2005] [Indexed: 05/06/2023]
Abstract
A way to circumvent the high pressures needed to metallize hydrogen is to "precompress" it in hydrogen-rich molecules, a strategy probed theoretically for silane. We show that phases with tetrahedral SiH4 molecules should undergo phase transitions with sixfold- and eightfold-coordinate Si appearing above 25 GPa. The most stable structure found can be metallized at under a megabar and at a compression close to the prediction of Goldhammer-Herzfeld criterion. According to a BCS-like estimate, metallic silane should be a high-temperature superconductor.
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Affiliation(s)
- Ji Feng
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, USA
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Köhler J, Simon A, van Wüllen L, Cordier S, Roisnel T, Poulain M, Somer M. Structures and Properties of NbOF3 and TaOF3 — with a Remark to the O/F Ordering in the SnF4 Type Structure. Z Anorg Allg Chem 2002. [DOI: 10.1002/1521-3749(200212)628:12<2683::aid-zaac2683>3.0.co;2-e] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Graudejus O, M�ller BG. Neue Fluoride MIIIMIVF7 mit MIII = SE, Tl und MIV = Sn, Pb, Pt. Z Anorg Allg Chem 1996. [DOI: 10.1002/zaac.19966220925] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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