Piezophototronic Effect Enhanced Perovskite Solar Cell Based on P(VDF‐TrFE)

Nie, Jiaheng; Zhang, Yaming; Dan, Minjiang; Wang, Jizheng; Li, Lijie; Zhang, Yan

doi:10.1002/solr.202170124

Cited by 12 publications

(7 citation statements)

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“…In XPS, any alteration of the full width at half-maximum (FWHM) indicates the chemical state changes and physical influences. It is observed that there are no significant changes in FWHM on day 1 (FWHM 1 ) and day 35 (FWHM 35 ) (the ratio of FWHM 35 and FWHM 1 is ∼1), indicating no shift in the chemical states of the elements (Figure 6e). These XPS results support the stability of the CBI perovskite in the PVDF matrix.…”

Section: = + ×mentioning

confidence: 99%

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Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Mondal¹,

Mishra²,

Sengupta³

et al. 2022

Langmuir

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In recent years, lead-free perovskite materials are exponentially emerging in photovoltaic and optoelectronic applications due to their low toxicity and superior optical properties. On the other hand, the demand for flexible, wearable, and lightweight optoelectronic devices is significantly growing in sensor and actuator technologies. In this scenario, lead-free perovskite-based flexible piezoelectric polymer composites have sparked considerable attention in this field due to their excellent piezo-, pyro-, ferroelectric, and photovoltaic properties. Thus, in this work, a long-term stable lead-free Cs 3 Bi 2 I 9 -PVDF composite is introduced. The in situ growth of the Cs 3 Bi 2 I 9 perovskite induces 92% yield of the electroactive phase in the PVDF matrix. The possible mechanism behind the electroactive β-phase transformation is presented via interfacial interactions of PVDF moieties with the Cs 3 Bi 2 I 9 (CBI) perovskite, which also give rise to long-term environmental stability. Next, a piezoelectric nanogenerator (PNG) has been fabricated with the Cs 3 Bi 2 I 9 -PVDF composite for mechanical energy harvesting, biophysiological motion monitoring, and voice recognitions that have potential utility in the health-care sector. Furthermore, a photodetector is developed to realize the piezophototronic effect. It exhibits a fast photoswitching behavior with rise and decay times of 141 and 278 ms, respectively. Thus, it is confirmed that the flexible Cs 3 Bi 2 I 9 -PVDF composite has shown tremendous potential to be used as an optical signal-modulated piezo-responsive wearable sensor.

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Section: = + ×mentioning

confidence: 99%

“…Therefore, chemical and physical properties can be affected due to the newly formed interlayer between the polymer and metal halide perovskites . The surrounding dielectric atmosphere can also alter the binding energy of electrons, which is characterized by the primary skeleton of piezo-phototronic materials. − …”

Section: Introductionmentioning

confidence: 99%

Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Mondal¹,

Mishra²,

Sengupta³

et al. 2022

Langmuir

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“…Therefore, P(VDF‐TrFE) can improve the crystallization of perovskite crystal and promote the formation of uniform large grain crystal film, which is in accordance with the previous articles. [ 46,47 ] Meanwhile, atomic force microscopy (AFM) was used to investigate the surface smoothness of these films, and the 3D AFM images (5 µm × 5 µm) are displayed in Figure 1g (corresponding 2D images of Figure S1, Supporting Information). On the whole, both of these films have good smoothness and the roughness values are ≈9.89 and ≈8.28 nm for pristine and PFEP films, respectively (Figure 1h).…”

Section: Resultsmentioning

confidence: 99%

Photoferroelectric Perovskite Synapses for Neuromorphic Computing

Han,

Ma,

et al. 2023

Adv Funct Materials

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Halide perovskite is an emerging material with excellent optoelectronic properties, and also widely used in neuromorphic devices. Recently, halide perovskite has been redefined as exhibiting extraordinary multifunction, e.g., photoferroelectricity. Herein, this work employs a composite material consisting of halide perovskite and organic ferroelectric material to develop a new photoferroelectric synapse, and the photoferroelectricity and some synaptic plasticity are investigated. By the corresponding test analysis, it is demonstrated that photoelectricity and ferroelectricity can reinforce each other in this photoferroelectric composite material. Versatile synaptic behaviors of the nervous system, including paired‐pulse facilitation/paired‐pulse depression, post‐tetanic potentiation /post‐tetanic depression, and spiking‐rate‐dependent plasticity, are successfully simulated. Particularly, the classical conditioning in Pavlov's dog experiment can be replicated in the photoferroelectric synapse to realize the learning function of the brain, including memory loss and recovery. This work could be conducive to the application of multifunctional perovskite materials in synapse devices and neuromorphic computing.

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“…[ 143 ] PVDF and its copolymer poly(vinylidene fluoride trifluoroethylene) (P(VDF‐TrEF)) are ferroelectric materials, which are easy to be polarized under the action of an electric field and induce piezoelectric photoelectric effect, [ 144 ] and the generated additional electric field promotes carrier separation and transport. [ 145 ] In addition, because PVDF has a long flexible polymer chain, adding it into the perovskite precursor solution can help the precursor solution diffuse on the substrate to form a uniform film. [ 44a ] Zhang et al.…”

Section: Types Of Wide Band‐gap Insulating Materials and Their Roles ...mentioning

confidence: 99%

Advances on the Application of Wide Band‐Gap Insulating Materials in Perovskite Solar Cells

Guo,

Huang,

Wang

et al. 2023

Small Methods

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In recent years, the development of perovskite solar cells (PSCs) is advancing rapidly with their recorded photoelectric conversion efficiency reaching 25.8%. However, for the commercialization of PSCs, it is also necessary to solve their stability issue. In order to improve the device performance, various additives and interface modification strategies have been proposed. While, in many cases, they can guarantee a significant increase in efficiency, but not ensure improved stability. Therefore, materials that improve the device efficiency and stability simultaneously are urgently needed. Some wide band‐gap insulating materials with stable physical and chemical properties are promising alternative materials. In this review, the application of wide band‐gap insulating materials in PSCs, including their preparation methods, working roles, and mechanisms are described, which will promote the commercial application of PSCs.

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Piezophototronic Effect Enhanced Perovskite Solar Cell Based on P(VDF‐TrFE)

Cited by 12 publications

References 0 publications

Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Photoferroelectric Perovskite Synapses for Neuromorphic Computing

Advances on the Application of Wide Band‐Gap Insulating Materials in Perovskite Solar Cells

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Piezophototronic Effect Enhanced Perovskite Solar Cell Based on P(VDF‐TrFE)

Cited by 12 publications

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Lead-Free Perovskite Cs3Bi2I9-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Lead-Free Perovskite Cs3Bi2I9-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Photoferroelectric Perovskite Synapses for Neuromorphic Computing

Advances on the Application of Wide Band‐Gap Insulating Materials in Perovskite Solar Cells

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Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors

Lead-Free Perovskite Cs₃Bi₂I₉-Derived Electroactive PVDF Composite-Based Piezoelectric Nanogenerators for Physiological Signal Monitoring and Piezo-Phototronic-Aided Strain Modulated Photodetectors