Ultrafast femtosecond pressure modulation of structure and exciton kinetics in 2D halide perovskites for enhanced light response and stability

Song, Chun‐Peng; Yang, Huanrui; Liu, Feng; Cheng, Gary J.

doi:10.1038/s41467-021-25140-2

Cited by 31 publications

(24 citation statements)

References 58 publications

(64 reference statements)

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“…Opposite trends of the lattice deformation depending on the laser power density might arise from the structural defects formed by the laser shock wave. 40 Upon laser irradiation, the g-C 3 N 4 NS surface was under a large out-of-plane compressive pressure along the direction of the g-C 3 N 4 film thickness, which also gave rise to lateral extension. 41 Thus, the laser pulse generated out-of-plane contraction and in-plane expansion in the g-C 3 N 4 NS film (laser power density ≤348.4 MW cm −2 ).…”

Section: Resultsmentioning

confidence: 99%

Laser-Shock-DrivenIn SituEvolution of Atomic Defect and Piezoelectricity in Graphitic Carbon Nitride for the Ionization in Mass Spectrometry

et al. 2022

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Nanostructures�coupled with mass spectrometry� have been intensively investigated to improve the detection sensitivity and reproducibility of small biomolecules in laser desorption/ionization mass spectrometry (LDI-MS). However, the impact of laser-induced shock wave on the ionization of the nanostructures has rarely been reported. Herein, we systematically elucidate the laser shock wave effect on the ionization in terms of the in situ development of atomic defects and piezoelectricity in two-dimensional graphitic carbon nitride nanosheets (g-C 3 N 4 NS) by short laser pulses. The mass analysis results of immunosuppressive drugs verify the enhanced LDI-MS performance, structurally originating from anisotropic lattice distortions in g-C 3 N 4 NS, i.e., in-plane extension (contraction) and out-ofplane contraction (extension) that modulate the charge carrier motion. Along with the experimental investigations, density functional theory calculations on Mulliken charges and dipole moments demonstrate the contribution of defect and piezoelectricity to the ionization. The results of this study provide a mechanistic understanding of the underlying ionization processes, which is crucial for revealing the full potential of laser shock waves in LDI-MS.

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Section: Resultsmentioning

confidence: 99%

Laser-Shock-DrivenIn SituEvolution of Atomic Defect and Piezoelectricity in Graphitic Carbon Nitride for the Ionization in Mass Spectrometry

et al. 2022

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Section: Preparation and Engineering Methods And The Related Property...mentioning

confidence: 99%

“…Ablation in a gas environment is easier to control than that in a liquid environment, which is usually employed to process nanoproducts such as metals, metallic alloys, semiconductors, and polymers. For instance, Song et al, for the first time, introduced ultrafast shock pressure ranging from 0 to 15.45 GPa from a femtosecond laser, aiming at tailoring the atomic structures and exciton dynamics of (FPEA) 2 PbI 4 to reduce dielectric confinement (Figure g) . The results indicated that inorganic framework distortion led to a band gap decrease of 150 meV(Figure j).…”

Section: Preparation and Engineering Methods And The Related Property...mentioning

confidence: 99%

“…For instance, Song et al, for the first time, introduced ultrafast shock pressure ranging from 0 to 15.45 GPa from a femtosecond laser, aiming at tailoring the atomic structures and exciton dynamics of (FPEA) 2 PbI 4 to reduce dielectric confinement (Figure 44g). 668 The results indicated that inorganic framework distortion led to a band gap decrease of 150 meV(Figure 44j). This may be ascribed to the enhanced benzene dipole interaction and π−π conjugation and promoted carrier dynamics.…”

Section: Controlling the Layer Number By Chemical Depositionmentioning

confidence: 99%

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Engineering van der Waals Materials for Advanced Metaphotonics

Lin

Zhang

et al. 2022

Chem. Rev.

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The outstanding chemical and physical properties of 2D materials, together with their atomically thin nature, make them ideal candidates for metaphotonic device integration and construction, which requires deep subwavelength light–matter interaction to achieve optical functionalities beyond conventional optical phenomena observed in naturally available materials. In addition to their intrinsic properties, the possibility to further manipulate the properties of 2D materials via chemical or physical engineering dramatically enhances their capability, evoking new science on light–matter interaction, leading to leaped performance of existing functional devices and giving birth to new metaphotonic devices that were unattainable previously. Comprehensive understanding of the intrinsic properties of 2D materials, approaches and capabilities for chemical and physical engineering methods, the resulting property modifications and novel functionalities, and applications of metaphotonic devices are provided in this review. Through reviewing the detailed progress in each aspect and the state-of-the-art achievement, insightful analyses of the outstanding challenges and future directions are elucidated in this cross-disciplinary comprehensive review with the aim to provide an overall development picture in the field of 2D material metaphotonics and promote rapid progress in this fast emerging and prosperous field.

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“…Laser is a kind of coherent optical radiation based on the principle of stimulated emission amplification. The 2D perovskite material exhibits a strong photoluminescence spectrum and adjustable emission spectra due to material modification, which ensure its application in the laser field. − …”

Section: Lasermentioning

confidence: 99%

Review on Organic–Inorganic Two-Dimensional Perovskite-Based Optoelectronic Devices

Han

Liu

et al. 2022

ACS Appl. Electron. Mater.

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Organic–inorganic two-dimensional (2D) perovskite is an optoelectronic material, with quantum-well structure and improved moisture stabilities, which has been widely used in various optoelectronic devices recently. In this review, the structure and properties of organic–inorganic 2D perovskite materials are first briefly introduced. After that, according to the different photoelectron coupling mechanisms, the recent progress of typical 2D perovskite-based optoelectronic devices is described in detail: including photodetectors, light-emitting diodes, solar cells, and lasers, as well as some optoelectronic devices (e.g., optical memory and optical synapses). We analyzed the influence of structure, manufacturing process, and material selection on device performance and showed promising progress in different applications. Subsequently, we proposed the possible breakthrough development direction of 2D perovskite-based optoelectronic devices in the coming years. This work points out the way for future progress of 2D perovskite-based optoelectronic devices, which is conducive to further improving device performance and inspiring designs of high-performance organic–inorganic 2D perovskite-based optoelectronic devices.

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Ultrafast femtosecond pressure modulation of structure and exciton kinetics in 2D halide perovskites for enhanced light response and stability

Cited by 31 publications

References 58 publications

Laser-Shock-DrivenIn SituEvolution of Atomic Defect and Piezoelectricity in Graphitic Carbon Nitride for the Ionization in Mass Spectrometry

Laser-Shock-DrivenIn SituEvolution of Atomic Defect and Piezoelectricity in Graphitic Carbon Nitride for the Ionization in Mass Spectrometry

Engineering van der Waals Materials for Advanced Metaphotonics

Review on Organic–Inorganic Two-Dimensional Perovskite-Based Optoelectronic Devices

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