Flexible hybrid perovskite nanofiber for all-inorganic perovskite solar cells

Lei, Ning; Gu, Ningxia; Wang, Tianwei; Liu, Weihong; Du, Pingfan; Chen, Wei–Hsiang; Song, Lixin; Siddique, Sheraz Hussain; Xiong, Jie

doi:10.1016/j.materresbull.2022.111747

Cited by 12 publications

(14 citation statements)

References 43 publications

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“…Thus, controlling electrospinning parameters is crucial for the optimal utilization of nanofibers. Recently, polymer-perovskite nanofibers have emerged as promising materials to fabricate flexible and extensible perovskite optoelectronic devices [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. One-stage [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ], two-stage [ 27 , 28 ], or core-shell [ 8 , 29 , 30 , 31 ] electrospinning processes have been commonly used to prepare this type of nanofibers.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, polymer-perovskite nanofibers have emerged as promising materials to fabricate flexible and extensible perovskite optoelectronic devices [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. One-stage [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ], two-stage [ 27 , 28 ], or core-shell [ 8 , 29 , 30 , 31 ] electrospinning processes have been commonly used to prepare this type of nanofibers. The one-stage electrospinning method is considered less expensive and simpler than other methods [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

“…The one-stage electrospinning method is considered less expensive and simpler than other methods [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. Metal halide perovskites, e.g., methylammonium lead halides (MAPbX 3 , X: Cl, Br, I), and cesium lead halides (CsPbX 3 ), are usually used as photoactive materials [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. All-inorganic halide perovskites are more suitable for outdoor applications, since they have higher thermal and moisture stability than organic-inorganic halide perovskites [ 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

“…Polar solvents (e.g., DMF, DMSO, etc.) are commonly used to dissolve perovskite precursors [ 23 , 24 , 25 , 27 , 28 , 32 , 33 , 34 , 35 ]. Polyvinylpyrrolidone (PVP), polyacrylonitrile (PAN), polyvinyl alcohol (PVA), poly(methyl methacrylate) (PMMA), and other non-conductive polymers suitable for electrospinning are commonly used to facilitate the production of electrospun nanofibers and improve the environmental stability of perovskite [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

“…are commonly used to dissolve perovskite precursors [ 23 , 24 , 25 , 27 , 28 , 32 , 33 , 34 , 35 ]. Polyvinylpyrrolidone (PVP), polyacrylonitrile (PAN), polyvinyl alcohol (PVA), poly(methyl methacrylate) (PMMA), and other non-conductive polymers suitable for electrospinning are commonly used to facilitate the production of electrospun nanofibers and improve the environmental stability of perovskite [ 8 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. PVP is a widely used polymer for fabricating these composite nanofibers due to its good solubility in polar solvents, high spinnability, thermal stability, and ability to bind perovskites, forming a stable intermediate phase or passivating the crystal surface [ 8 , 23 , 24 , 26 , 27 , 28 , 32 , 33 , 34 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Electrospinning Setup Parameters on Properties of Polymer-Perovskite Nanofibers

et al. 2023

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Optimizing the properties of electrospun polymer-perovskite nanofibers is considered essential for improving the performance of flexible optoelectronic devices. Here, the influence of electrospinning setup parameters (i.e., electrical voltage, collector type (planar or rotary), rotation speed, as well as process time) on the properties (i.e., external structure, perovskite crystallinity, optical properties, thermal properties, the shrinkage ratio, mechanical properties, and long-term stability) of electrospun polyvinylpyrrolidone nanofibers modified with cesium lead iodide nanocrystals has been studied. The results have shown that the structure of nanofibers is related to the electrical voltage, collector rotation speed, and process duration. Perovskite crystallinity and light absorption have improved by increasing the electrical voltage or/and the process time. The polymer’s glass transition temperature is affected by the embedded perovskite and the collector’s rotation speed. The shrinkage ratio and mechanical properties of nanofibers have been controlled by the rotation speed and the electrical voltage. The shrinkage is caused by the stress created in the nanofibers during the electrospinning process. The best mechanical properties can be noticed with the rotary collector at a rotational speed of 500–750 rpm. Nanofibers have shown good long-term stability and high thermal stability. The long-term stability is inversely proportional to the value of the electrical voltage.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Electrospinning Setup Parameters on Properties of Polymer-Perovskite Nanofibers

et al. 2023

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Hindered Phase Transition Kinetics of α‐CsPbI₃ by External Tension

et al. 2023

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Recently, the all‐inorganic perovskite solar cells have attracted large amount of attention, due to the much better water resistance compared to the organic counterparts. Unfortunately, the undesired phase transition remained a significant challenge, despite the many attempts. An important step forward has been made here by numerical simulation, which discovered the significance of external strain to the stability of desired α‐CsPbI3, whose lifetime can be extended up to 3 times by non‐hydrostatic tension, as has been verified by both modelling and experimental results. In addition, such lifetime could be even enhanced further by hydrostatic tension, as indicated by the simulation. The unexpected observation provided not only an effective method to extend the lifetime of the perovskite devices, but also opened an unexpected path for the wide research community to utilise the straining engineering method that has been extensively investigated in the perovskite research.This article is protected by copyright. All rights reserved.

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