Tailoring the mechanical response of Ruddlesden Popper lead halide perovskites

Gupta, Yashika; Rathore, Sudharm; Singh, Aparna; Kumar, Anshuman

doi:10.1016/j.jallcom.2021.163575

Cited by 12 publications

(6 citation statements)

References 38 publications

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“…[ 33 ] In contrast, the semiconducting behavior can be facilely modulated by modifying inorganic perovskite frameworks, increasing the coordination type and layer thickness (i.e., n value). [ 34–36 ] We here focus on ferroelectrics of the bilayered perovskite structures ( n = 2). The increasing number of inorganic sheets is beneficial to the enhanced carrier transport, and excellent BPVE performances would be expected in the members of bilayered hybrid perovskite ferroelectrics.…”

Section: Ferroelectric Semiconductors Of Layered Hybrid Perovskitesmentioning

confidence: 99%

Perovskite‐Type Hybrid Ferroelectric Semiconductors: A Potential Photosensitive Candidate Family for New Optoelectronic Applications

et al. 2022

Advanced Physics Research

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Ferroelectricity, characterized by the reversible switching of spontaneous polarization (P s ) under external electric field, exists in polar crystalline materials without a spatial-inversion symmetry. On account of inherent P s , ferroelectric materials show intriguing physical properties including piezoelectricity, pyroelectricity, second-order optical nonlinearity, and electro-optic effect. Such functions of ferroelectric materials have been widely used for practical applications. Recently, hybrid perovskites are emerging as a promising ferroelectric family that enables the combination and/or coupling of ferroelectricity, photoexcitation, and semiconductor behaviors. Due to the polarization deterioration caused by leakage current of photoexcited carriers, however, it is still a challenge to accomplish practical applications of ferroelectric semiconductors in the photoelectric field. In this review, the recent progress of ferroelectric system of perovskite-type hybrids with different dimensions is summarized. Primarily, a brief description of crystallographic symmetry breaking which is a fundamental criterion to creating ferroelectricity, is illuminated. The combination and/or coupling of photoelectric properties with ferroelectric P s is then presented. Finally, the further development tendency and possible application outlooks of this ferroelectric material system are prospected.

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Section: Ferroelectric Semiconductors Of Layered Hybrid Perovskitesmentioning

confidence: 99%

Perovskite‐Type Hybrid Ferroelectric Semiconductors: A Potential Photosensitive Candidate Family for New Optoelectronic Applications

et al. 2022

Advanced Physics Research

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“…Halide perovskites are highly promising materials for optoelectronic applications due to their unique combination of properties, including a long charge carrier diffusion length, [38] a high light extinction coefficient, [39] and exceptional mechanical characteristics. [40] Compared to metal oxides and 2D materials, which require higher temperatures for processing [41,42] and are limited by transfer technology, [12,43] respectively, halide perovskites are easier to fabricate and are highly defect tolerant. [44] However, to date, there are few reports on all-optical synapses using only perovskite materials.…”

Section: Introductionmentioning

confidence: 99%

All‐Optically Controlled Retinomorphic Memristor for Image Processing and Stabilization

Cai,

Huang,

Tang

et al. 2023

Adv Funct Materials

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Image stabilization is a crucial field in machine vision, aiming to eliminate image blurring or distortion caused by the camera or object jitter. However, traditional image stabilization techniques often suffer from the drawbacks of requiring complex equipment or extensive computing resources, resulting in inefficiencies. In contrast, the human retina performs a highly efficient all‐in‐one system, encompassing the detection and processing of light stimuli. In this study, an all‐optically controlled retinomorphic memristor based on the CsxFAyMA1‐x‐yPb(IzBr1‐z)3 is proposed, which integrates perception, storage, and processing functions. This memristor exhibits significant advantages in image stabilization. It is capable of positively and negatively modulating its conductance using specific intensities (11.8 and 0.9 mW cm−2, respectively) of red light (630 nm). To demonstrate the effectiveness of the proposed approach, handwritten digit recognition simulations are conducted. The application of specific light stimuli effectively highlights the characteristics of blurred images. The processed images are then fed into a conductance‐mapped neural network for rapid recognition. Remarkably, the recognition rates of the processed images reach 83.5% after 19 000 iterations, surpassing the performance of blurred images (only 56.2% after 19 000 iterations). These results highlight the immense potential of retinomorphic memristors as the hardware foundation for next‐generation image stabilization systems.

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“…These interactions are substantially stronger than the CH3-CH3 Van der Waals interaction and hydrogen bond interaction present in the BA-based and 5-AVA-based cation 2D perovskite, respectively, but are weaker than the ionic/covalent bonds of the 3D perovskite structure. As a result, we can see that the PEAbased 2D perovskite's elastic modulus (15.1 ± 1.6 GPa) is significantly higher than the elastic modulus of the BA based 2D perovskite (8.1 ± 0.9 GPa) and 5-AVA based 2D perovskite (6.3 ± 1.3 GPa) 212,216 .…”

Section: Resultsmentioning

confidence: 90%

“…were not attained in the mixture films. In another recent work, the authors studied the effect of variation of the number of inorganic octahedra (n) on the elastic modulus of quasi-2D perovskite based on butylammonium cation (BA)2PbI4 and MAPbI3 thin films 213 . It has been observed that the modulus value increases with an increase in volume percentage of 3D perovskite in the mixture, which results in an increase in the number of inorganic octahedra within the structure.…”

Section: Introductionmentioning

confidence: 99%

“…The 2D-3D mixed perovskite consists of only 2D and 3D perovskite phases in different proportion and the elastic modulus was found to be reduced with increase in volume fraction of 2D perovskite phase. In another study Y.Gupta et al 213 reported the elastic modulus of 3D, 2D, quasi-2D perovskite based on butylammonium cation through experiments and compared the results through density functional theory calculation. The elastic modulus follows the trend as 2D < quasi-2D < 3D, as the volume fraction of 3D increases or the number of inorganic octahedrons in the structure.…”

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confidence: 99%

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Investigation of mechanical properties of Ruddlesden-Popper 2D,2D-3D and 3D perovskites using an experimental and first principles approach

Rathore¹

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Hybrid organic-inorganic perovskites (HOIPs) are considered as one of the most promising candidates for the photovoltaic application. Although a lot of research has been done for the improvement in efficiency and stability of the devices made from this material, the mechanical property study of these materials is very limited. The mechanical properties of hybrid organicinorganic perovskites crystals have been mentioned in a few reports. However, it is also important to study the mechanical properties of the perovskite's thin films, especially those used in flexible devices, since their polycrystalline nature makes them different from single crystals. The stiffness of the perovskite active layer plays a critical role in influencing the

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Tailoring the mechanical response of Ruddlesden Popper lead halide perovskites

Cited by 12 publications

References 38 publications

Perovskite‐Type Hybrid Ferroelectric Semiconductors: A Potential Photosensitive Candidate Family for New Optoelectronic Applications

Perovskite‐Type Hybrid Ferroelectric Semiconductors: A Potential Photosensitive Candidate Family for New Optoelectronic Applications

All‐Optically Controlled Retinomorphic Memristor for Image Processing and Stabilization

Investigation of mechanical properties of Ruddlesden-Popper 2D,2D-3D and 3D perovskites using an experimental and first principles approach

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