Effective ionic radii of nitrite and thiocyanate estimated in terms of the Boettcher equation and the Lorentz-Lorenz equation

Iwadate, Yasuhiko; Kawamura, Kazutaka; Igarashi, Kazuo; Mochinaga, Junichi

doi:10.1021/j100223a028

Cited by 59 publications

(44 citation statements)

References 4 publications

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“…This effect is more important at higher concentrations and cannot be attributed to pH changes (pH of all solutions were around 5.5). It may perhaps suggest that the ion-exchange capacity of the membrane is reduced for perchlorate (radii, 0.236 nm) and thiocyanate (0.222 nm) than for chloride (0.188 nm) and nitrate (0.187 nm) [37,38]. Additionally, Fig.…”

Section: Resultsmentioning

confidence: 96%

Chronopotentiometry of pure electrolytes with anion-exchange donnan exclusion membranes

Crespo

Afshar

Bakker

2014

Journal of Electroanalytical Chemistry

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Section: Resultsmentioning

confidence: 96%

Chronopotentiometry of pure electrolytes with anion-exchange donnan exclusion membranes

Crespo

Afshar

Bakker

2014

Journal of Electroanalytical Chemistry

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“…The peaks at 16.388,1 9.698,2 1.578, 27.488,a nd 29.428 are attributed to the distinct peaks of the (110), (111), (0 02), (112), and (0 21)p laneso fP b(SCN) 2 ,r espectively,w hich correspondt ot he previousr eport. [25][26][27] To elucidate the formation mechanism of SCNbased perovskite, time-dependent XRD patterns (Figure S1 Ai n the Supporting Information) were employed to observet he reaction of Pb(SCN) 2 under MAI vapora fter various reaction times. The slightly enhanced intensity of the (110)p eak for the SCNbased perovskite can be recognized as the increase of crystalline orientation.T hese phenomenai ndicatet hat the addition of SCNinto the perovskite crystal could introduce heterogeneous nucleation sites for growingamore crystalline structure.…”

Section: Resultsmentioning

confidence: 99%

Low‐Pressure Vapor‐Assisted Solution Process for Thiocyanate‐Based Pseudohalide Perovskite Solar Cells

Chiang

Cheng

et al. 2016

ChemSusChem

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In this report, we fabricated thiocyanate-based perovskite solar cells with low-pressure vapor-assisted solution process (LP-VASP) method. Photovoltaic performances are evaluated with detailed materials characterizations. Scanning electron microscopy images show that SCN-based perovskite films fabricated using LP-VASP have long-range uniform morphology and large grain sizes up to 1 μm. The XRD and Raman spectra were employed to observe the characteristic peaks for both SCN-based and pure CH NH PbI perovskite. We observed that the Pb(SCN) film transformed to PbI before the formation of perovskite film. X-ray photoemission spectra (XPS) show that only a small amount of S remained in the film. Using LP-VASP method, we fabricated SCN-based perovskite solar cells and achieved a power conversion efficiency of 12.72 %. It is worth noting that the price of Pb(SCN) is only 4 % of PbI . These results demonstrate that pseudo-halide perovskites are promising materials for fabricating low-cost perovskite solar cells.

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“…In addition to the BF 4 − , the pseudohalide thiocyanite (SCN − ) also has an ionic radius of 0.217 nm, which is relatively close to that of I − . [188] It was believed that pseudohalides and true halides provide quite similar chemical properties. [189] Naturally, researchers expected to substitute iodine atoms with pseudohalides.…”

Section: F − or Pseudohalide/i Mixed Pvskmentioning

confidence: 99%

The Emergence of the Mixed Perovskites and Their Applications as Solar Cells

Xiao

Liü

Zhang

et al. 2017

Advanced Energy Materials

129

105

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The halide perovskite (PVSK) materials (with ABX3 formulation) have emerged as “dream materials” for photovoltaic (PV) applications due to their remarkable physical properties such as high optical absorption coefficient, carrier mobility, long carrier diffusion lengths, etc. These properties have enabled the PV devices to reach higher than 20% power conversion efficiencies (PCE) in record time. The further pursuit of higher PCE and improved stability brings forth increasing interests in so‐called “mixed composition” PVSK materials, consisting of partial substitution of the A, B, and/or X‐sites with alternative elements/molecules of similar size. Herein, we highlight the recent advances in developing mixed PVSK for PVs and their relevant optoelectronic properties. We mainly focus on mixed PVSK materials in the form of polycrystalline thin films, but also discuss nanostructured and two‐dimensional (2D) PVSK materials due to the increasing interest of broad readership. Efforts are exerted to elucidate the design principles of mixed PVSK and fabrication techniques for high performance optoelectronic devices, which help deepen our fundamental understanding of mixed PVSK systems. We hope this review will shed light onto the design and synthesis of mixed PVSK materials to further the progress of PVSK photovoltaics towards higher efficiencies and longer lifetimes.

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Effective ionic radii of nitrite and thiocyanate estimated in terms of the Boettcher equation and the Lorentz-Lorenz equation

Cited by 59 publications

References 4 publications

Chronopotentiometry of pure electrolytes with anion-exchange donnan exclusion membranes

Chronopotentiometry of pure electrolytes with anion-exchange donnan exclusion membranes

Low‐Pressure Vapor‐Assisted Solution Process for Thiocyanate‐Based Pseudohalide Perovskite Solar Cells

The Emergence of the Mixed Perovskites and Their Applications as Solar Cells

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