Single-particle electroluminescence of CsPbBr3 perovskite nanocrystals reveals particle-selective recombination and blinking as key efficiency factors

Sharma, Dipti; Hirata, Shuzo; Vácha, Martin

doi:10.1038/s41467-019-12512-y

Cited by 35 publications

(39 citation statements)

References 57 publications

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“…Multidrug and toxic compound extrusion (MATE) is one of the five major transporter superfamilies in living organisms. In plants, MATE transporters comprise of 117 gene family members in Glycine max [ 13 ], 56 in Arabidopsis thaliana [ 14 ], 49 in Zea mays [ 15 ], 71 in Populus trichocarpa [ 16 ], 67 in Solanum lycopersicum [ 17 ], 53 in Oryza sativa [ 18 ], 65 in Vitis vinifera [ 19 ], 33 in Vaccinium corymbosum [ 20 ], 48 in Solanum tuberosum [ 21 ], and over 40 in Medicago truncatula [ 22 ]. MATEs are characterized by 12 transmembrane α-helical domains, which are distinct from other solute transporters.…”

Section: Introductionmentioning

confidence: 99%

MATE-Type Proteins Are Responsible for Isoflavone Transportation and Accumulation in Soybean Seeds

Yung

et al. 2021

IJMS

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Soybeans are nutritionally important as human food and animal feed. Apart from the macronutrients such as proteins and oils, soybeans are also high in health-beneficial secondary metabolites and are uniquely enriched in isoflavones among food crops. Isoflavone biosynthesis has been relatively well characterized, but the mechanism of their transportation in soybean cells is largely unknown. Using the yeast model, we showed that GmMATE1 and GmMATE2 promoted the accumulation of isoflavones, mainly in the aglycone forms. Using the tobacco BrightYellow-2 (BY-2) cell model, GmMATE1 and GmMATE2 were found to be localized in the vacuolar membrane. Such subcellular localization supports the notion that GmMATE1 and GmMATE2 function by compartmentalizing isoflavones in the vacuole. Expression analyses showed that GmMATE1 was mainly expressed in the developing soybean pod. Soybean mutants defective in GmMATE1 had significantly reduced total seed isoflavone contents, whereas the overexpression of GmMATE1 in transgenic soybean promoted the accumulation of seed isoflavones. Our results showed that GmMATE1, and possibly also GmMATE2, are bona fide isoflavone transporters that promote the accumulation of isoflavones in soybean seeds.

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Section: Introductionmentioning

confidence: 99%

MATE-Type Proteins Are Responsible for Isoflavone Transportation and Accumulation in Soybean Seeds

Yung

et al. 2021

IJMS

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“…In contrast, small‐sized (≈20 nm) Cs 3 Bi 2 I 6 Cl 3 double perovskite showed temporal intermittency in PL emission. [ 76 ] The similar PL blinking phenomenon was commonly observed in micrometer‐sized MAPbBr 3 microcrystal, [ 72,77 ] single‐crystal rods, [ 71 ] single grains in MAPbI 3 thin film, [ 74,78 ] inorganic CsPbBr 3 nano‐spheres, [ 70 ] aggregated CsPbBr 3 nanocrystals, [ 75,79 ] and double perovskite Cs 3 Bi 2 I 6 Cl 3 nanocrystals, 2D nanosheets [ 76 ] and Cs 3 Bi 2 I 9 nanoplatelets. [ 80 ]…”

Section: Mobile Ion‐induced Fluorescence Blinkingmentioning

confidence: 73%

“…Electroluminescence and PL are compared on the level of individual CsPbBr 3 nanocrystals (NCs) by Sharma et al., as shown in Figure . [ 75 ] In electroluminescence, only a small fraction of the NCs within the aggregate are emitting as a result of efficient charge migration, accumulation and selective recombination on larger NCs, leading to pronounced blinking and decreased efficiency. With light excitation, the nanoparticles emit locally, and therefore, PL in an aggregate does not exhibit blinking.…”

Section: Mobile Ion‐induced Fluorescence Blinkingmentioning

confidence: 99%

Revealing Dynamic Effects of Mobile Ions in Halide Perovskite Solar Cells Using Time‐Resolved Microspectroscopy

et al. 2020

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Halide perovskites are promising candidate materials for the next generation high-efficiency optoelectronic devices. Since perovskites are electronic-ionic mixed conductors, ion dynamics have a critical impact on the performance and stability of perovskite-based applications. However, comprehensively understanding ionic dynamics is challenging, particularly on nanoscale imaging of ionic dynamics in perovskites. In this review, mobile ion dynamics in halide perovskites investigated via luminescence spectroscopy combined with confocal microscopy are discussed, including mobile ion induced fluorescence quenching, phase segregation in mixed halide hybrid perovskite, and mobile ion accumulation at the interface in perovskite devices. Steady-state and time-resolved luminescence imaging techniques, combined with confocal microscopy, are unique tools for probing ionic dynamics in perovskites, providing invaluable insights on ionic dynamics in nanoscale resolution, along with a wide temporal range from picoseconds to hours. The works in this review are not only for understanding mobile ions to improve the design of perovskite-based devices but also foster the development of microspectroscopic methodologies in a broader solid-state physics context of investigating ionic transports in polycrystalline materials.

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“…In particular, the detailed knowledge of the Particle Size Distribution (PSD) and Particle Size and Shape Distribution (PSSD) becomes an issue of extreme relevance when developing materials with advanced functionalities. This is for example the case of electroluminescent perovskites 9 , heterogeneous catalysts 10 , nanomaterials for optoelectronics 11 , photovoltaics 12 , drug delivery 13 , or in industrially relevant processes, such as filtration 14 , coating 15 , dyes and inks 16 , cosmetics 17 and active pharmaceutical ingredients formulation 18 .…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle size distribution from inversion of wide angle X-ray total scattering data

Ferri

Bertolotti

Guagliardi

et al. 2020

Sci Rep

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An increasingly important issue in nanoscience and nanotechnology is the accurate determination of nanoparticle sizing. Wide angle X-ray total scattering (WAXtS) data are frequently used to retrieve the particle Size Distributions (pSDs) of nanocrystals of highly technological relevance; however, the PSD shape typically relies on an a-priori assumption. Here, we propose a modified version of the classical iterative Lucy-Richardson (LR) algorithm, which is simple, fast and highly reliable against noise, and demonstrate that the inversion of WAXTS data can be profitably used for recovering accurate pSD regardless of its shape. computer simulations based on the use of the Debye Scattering equation (DSe) modelling WAXtS data show that the algorithm is capable of recovering accurate PSDs even when the sample is made of a mixture of different polymorphs and/or exhibits microstrain effects. When applied to the inversion of WAXTS data taken on real samples, the method requires accurate modelling of the nanoparticle crystal structure, which includes structural defects, microstrain and surface induced distortions. provided that this information is correctly fed to the program, the inversion algorithm reconstructs the WAXtS data with high accuracy and recovers highly robust (against noise) pSDs. two examples reporting the characterization of Magnetite-Maghemite and commercial P25-Titania nanopowders, are discussed. We demonstrate that pre-assumption of wrong pSD shape leads to inaccurate number-based average sizes in highly polydisperse samples. Nanoparticle sizing and nanoparticle structural characterization have become, over the last decades, topics of increasing interest due to their intimate relationship to nanoscience and nanotechnology 1-6. Nanoparticles or NanoCrystals (NCs) usually exhibit a crystalline or a partially ordered atomic arrangement, with local structural distortions, defects, and remarkable surface effects (due to their large surface area to volume ratio) that can be tailored by proper functionalization. All these structural features, together with the NCs morphology and size, determine their physical-chemical properties and, ultimately, their functionality 7,8. In particular, the detailed knowledge of the Particle Size Distribution (PSD) and Particle Size and Shape Distribution (PSSD) becomes an issue of extreme relevance when developing materials with advanced functionalities. This is for example the case of electroluminescent perovskites 9 , heterogeneous catalysts 10 , nanomaterials for optoelectronics 11 , photovoltaics 12 , drug delivery 13 , or in industrially relevant processes, such as filtration 14 , coating 15 , dyes and inks 16 , cosmetics 17 and active pharmaceutical ingredients formulation 18. Among the experimental techniques that deal with nanoparticle sizing, imaging and scattering optical methods are among the most popular ones. Imaging methods, such as confocal optical 19 or transmission electron 20 microscopy, work by analyzing individually each single particle and therefore provide ...

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Single-particle electroluminescence of CsPbBr3 perovskite nanocrystals reveals particle-selective recombination and blinking as key efficiency factors

Cited by 35 publications

References 57 publications

MATE-Type Proteins Are Responsible for Isoflavone Transportation and Accumulation in Soybean Seeds

MATE-Type Proteins Are Responsible for Isoflavone Transportation and Accumulation in Soybean Seeds

Revealing Dynamic Effects of Mobile Ions in Halide Perovskite Solar Cells Using Time‐Resolved Microspectroscopy

Nanoparticle size distribution from inversion of wide angle X-ray total scattering data

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