In situ growth of aligned CsPbBr3 nanorods in polymer fibers with tailored aspect ratios

Zhang, Huaihao; Fu, Dingfa; Du, Zhentao; Fu, Hui; Shao, Gang; Yang, Weiyou; Zheng, Jinju

doi:10.1016/j.ceramint.2020.04.035

Cited by 13 publications

(5 citation statements)

References 38 publications

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“…[15] The one-step synthesis of CsPbBr 3 @polymer nanofibers by an electrospinning process was reported by Zhang et al who obtained aligned perovskite nanorods with tailored aspect ratios in polystyrene. [16] Chen et al embedded CsPbBr 3 nanocrystals in polystyrene fibers for nanoscopic imaging [17] and Zhang et al exploited the photocatalytic properties of the perovskite in polymethyl methacrylate matrix for degradation of various organic dyes. [18] Especially the use of polystyrene shows good stability as determined by complete PLQY retention after storage under ambient conditions for 18 months [19] or 83% PLQY retention after being immersed in water for 3 months.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Electroluminescent CsPbBr₃ Fibers as Flexible Perovskite Networks for Light‐Emitting Application

et al. 2023

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Thin‐film perovskite light‐emitting diodes have gained increasing attention in the last 6 years. With the possibility to process the emitting layer from solution, the way for 1D morphology of the semiconductor for flexible devices is paved. Herein, for the first time single‐step fabrication of CsPbBr3@PVP nanofibers in a customized electrospinning process performed under ambient conditions from a water‐based precursor solution is reported. The water‐based approach allows the incorporation of a conductive polymer into the compound fiber by blending the perovskite precursor ink with commercially available PEDOT:PSS dispersion. The results demonstrate electrospun fiber mats which are stable at ambient conditions for at least 5 months and can be utilized in electroluminescence devices. Photoluminescence studies on the perovskite fibers reveal a blueshift of the emission peak compared to thin films possibly due to the generation of nanocrystals of ≈12 nm by in situ nanocrystal pinning as confirmed by transmission electron microscopy. A proof‐of‐concept electrically pumped light‐emitting device is built with the obtained fiber mat. The perovskite nanofibers offer promising applications in flexible and stretchable optoelectronics.

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Section: Introductionmentioning

confidence: 99%

Electrospun Electroluminescent CsPbBr₃ Fibers as Flexible Perovskite Networks for Light‐Emitting Application

et al. 2023

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“…All-inorganic metallic halide perovskites such as CsPbX 3 (X = Cl, Br, I) have attracted great attention due to their superior optical properties, [1,2] e.g., great charge transport properties, [3,4] high quantum yield [5,6] and acceptable stability in comparison to organic perovskites. [7] Thanks to these advantages, nanocrystals (NCs), [8,9] nanorods (NRs) [10,11] and nanowires (NWs) based on this material have been designed and prepared.…”

Section: Introductionmentioning

confidence: 99%

A simulation study of polarization characteristics of ultrathin CsPbBr₃ nanowires with different cross-section shapes and sizes

Yang¹,

Hu²,

Wang³

et al. 2023

Chinese Phys. B

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The polarization characteristics of ultrathin CsPbBr3 nanowires are investigated. Especially, for the height of cross-section of nanowires between 2 nm and 25 nm, the normalized intensity and polarization ratio ρ of CsPbBr3 nanowires with triangular, square and hexagonal cross-section shapes are compared. The results show that, along with the increase of the height of cross-section, the polarization ratios of these three nanowires decrease until T = 15 nm, and increase afterwards. Also, along with the increase of the cross-section area up to 100 nm2, the polarization ratios of these three nanowires increase too. In general, for the same height or area, the polarization ratio ρ of these nanowires follows ρ hexagon > ρ square > ρ triangle. Therefore, the nanowire with the hexagonal cross-section should be chosen, where for a cross-section height of 2 nm and a length-height ratio of 20:1, the maximal polarization ratio is 0.951 at the longitudinal center of the NW. Further, for the hexagonal NW with a cross-section height of 10 nm, the hexagonal NW with a length-height ratio of 45:1 exhibits the maximal polarization ratio at the longitudinal center of the NW. These simulation results predict the feasible size and shape of CsPbBr3 nanowire devices with high polarization ratios.

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“…21 Examples include the incorporation of methylammonium lead triiodide perovskites (CH 3 NH 3 PbI 3 , MAPbI 3 ) within polyacrylonitrile (PAN) and polyvinylpyrrolidone (PVP) electrospun fibers 22,23 as well as the fabrication of polystyrene (PS) and polymer vinyl acetate (PVAc) electrospun fibers loaded with CsPbX 3 (X = Br, I, and Cl) nanocrystals and aligned CsPbBr 3 nanorods generated in situ. 24,25 In another example, 3D multi-layered assemblies consisting of electrospun poly(vinylidene fluoride) (PVDF) nanofibers and electrosprayed CsPbBr 3 @PVDF particles were developed and evaluated as high-performance flexible piezoelectric nanogenerators. 26 Recently, our group reported the fabrication of robust and bright polymer electrospun fibrous emitters, based on either the hydrophilic PVP or the hydrophobic poly(methyl methacrylate) (PMMA), sensitized by green-emitting allinorganic CsPbBr 3 or hybrid organic-inorganic FAPbBr 3 nanocrystals.…”

Section: Introductionmentioning

confidence: 99%

P3HT-Based Semi-Conductive Electrospun Nanocomposite Fibrous Emitters Doped with CsPbBr3 Perovskite Quantum Dots

Papaparaskeva,

Ioannides,

Lambride

et al. 2023

J. Electron. Mater.

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Poly(3-hexylthiophene-2,5-diyl) (P3HT)-based semiconducting electrospun nanocomposite fibrous emitters were successfully fabricated by combining P3HT with poly(ethylene oxide) (PEO) and commercially available CsPbBr3 perovskite quantum dots (PQDs). The latter were employed as a synergistic photoluminescence emitter of high efficiency within the P3HT/PEO blended polymer matrix, while PEO was used as an auxiliary polymer to assist the electrospinnability of P3HT. The produced materials were characterized with respect to their chemical composition and morphology by scanning electron microscopy (SEM) and transmission electron microscopy/energy-dispersive x-ray analysis (TEM/EDX) whereas fluorescence microscopy and spectroscopy were employed to study their optical properties. Based on the obtained results, it was confirmed that the PQDs were successfully encapsulated within the electrospun fibers at a high percentage (10 wt.%), retaining at the same time their optical properties and nanoscale dimensions. Moreover, the experimental data obtained suggested the existence of inter-material interactions between P3HT and PQDs. Consequently, this study creates new pathways in the development of innovative fibrous nanocomposites with unique optoelectronic features, rendering them highly interesting in light-harvesting, sensing and optoelectronic applications. Graphic Abstract

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In situ growth of aligned CsPbBr3 nanorods in polymer fibers with tailored aspect ratios

Cited by 13 publications

References 38 publications

Electrospun Electroluminescent CsPbBr₃ Fibers as Flexible Perovskite Networks for Light‐Emitting Application

Electrospun Electroluminescent CsPbBr₃ Fibers as Flexible Perovskite Networks for Light‐Emitting Application

A simulation study of polarization characteristics of ultrathin CsPbBr₃ nanowires with different cross-section shapes and sizes

P3HT-Based Semi-Conductive Electrospun Nanocomposite Fibrous Emitters Doped with CsPbBr3 Perovskite Quantum Dots

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In situ growth of aligned CsPbBr3 nanorods in polymer fibers with tailored aspect ratios

Cited by 13 publications

References 38 publications

Electrospun Electroluminescent CsPbBr3 Fibers as Flexible Perovskite Networks for Light‐Emitting Application

Electrospun Electroluminescent CsPbBr3 Fibers as Flexible Perovskite Networks for Light‐Emitting Application

A simulation study of polarization characteristics of ultrathin CsPbBr3 nanowires with different cross-section shapes and sizes

P3HT-Based Semi-Conductive Electrospun Nanocomposite Fibrous Emitters Doped with CsPbBr3 Perovskite Quantum Dots

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Product

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Electrospun Electroluminescent CsPbBr₃ Fibers as Flexible Perovskite Networks for Light‐Emitting Application

Electrospun Electroluminescent CsPbBr₃ Fibers as Flexible Perovskite Networks for Light‐Emitting Application

A simulation study of polarization characteristics of ultrathin CsPbBr₃ nanowires with different cross-section shapes and sizes