High elasticity of CsPbBr3 perovskite nanowires for flexible electronics

Li, Xiaocui; Meng, You; Fan, Rong; Fan, Shumin; Dang, Chaoqun; Feng, Xiaobin; Ho, Johnny C.; Lü, Yang

doi:10.1007/s12274-021-3332-0

Cited by 22 publications

(24 citation statements)

References 33 publications

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“…For instance, Li et al used in situ scanning electron microscopy (SEM) buckling experiments to prove that high tensile elastic strains (%4% to %5.1%) are achieved in single-crystal CsPbBr 3 NWs. [25] No significant reduction in NW performance was observed after 5000 cycles. Zhang et al systematically explored the size dependence of emission anisotropy and proved that the polarization ratio experienced invariant, decreased, and oscillation regions as the thickness increased.…”

Section: Unique Characteristicsmentioning

confidence: 96%

Metal Halide Perovskite Nano/Microwires

Wang

Cao

2021

Small Structures

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Section: Unique Characteristicsmentioning

confidence: 96%

Metal Halide Perovskite Nano/Microwires

Wang

Cao

2021

Small Structures

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“…Lu et al demonstrated the CsPbBr 3 nanowires with high elasticity. [40] The flexible photodetector based on the CsPbBr 3 nanowires kept the performance after 5000 bending cycles. The simple fabrication methods of nanowire network enable it to be applied to large area preparation.…”

Section: Morphology Of Perovskitesmentioning

confidence: 99%

“…It is found that low-dimensional perovskites have higher tolerance to film cracks and better mechanical stability compared to 3D perovskites. [40,41,151,152] The QD and nanowire are the typical lowdimensional materials.…”

Section: Morphology Of Perovskitesmentioning

confidence: 99%

“…Nanowires are inherently flexible and quantum dots (QDs) have excellent flexural endurance. [40][41][42] Finally, the hole transport layer (HTL) is also important for the efficiency of devices. The poly (3,4-ethylenedioxythiophene): polystyrene sulfonate (PEDOT:PSS) is commonly used as HTL due to its high optical transmittance, bending durability, and hole transport properties.…”

Section: Introductionmentioning

confidence: 99%

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Flexible and Wearable Optoelectronic Devices Based on Perovskites

Zhao

et al. 2021

Adv Materials Technologies

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PCE) values than the single-junction solar cells. [11,12] In addition, perovskites have shown emerging applications in lightemitting diodes (LEDs), photodetectors and other fields. These devices are fabricated on the rigid substrate initially, which limit their applications in the emerging intelligent devices, such as flexible display and intelligent sensor. [13,14] Flexible devices with stretchability and crumpling durability are capable of realizing portable and wearable application. Kumar et al. reported the first flexible-perovskite solar cells (F-PSCs) with PCE of 2.6%. [15] With the optimization of devices and deep understanding of perovskite materials, the highest PCE of F-PSCs is more than 20%. [16] The artemisinin passivation strategy was used to reduce the trap density through the interaction between artemisinin and the uncoordinated Pb 2+ . The PCE of flexible devices is often limited by their low-temperature manufacturing process. Generally, perovskite optoelectronic devices can be prepared by solution method. [9,10] So far, the flexible devices have been reported by various methods, such as vapor deposition, [17] inkjet printing, [18][19][20] slot-die coating. [21][22][23] These fabrication methods with low-cost and simplicity are suitable for large-scale fabrication of flexible devices. The flexibility of optoelectronic devices is influenced by many aspects, such as the substrates, carrier transport layers, photoactive layers, and electrodes in the structure of F-PSCs. Different from the rigid devices, flexible devices are commonly fabricated on substrate with flexibility, such as polyethylene terephthalate (PET), polyethylene 2,6-naphthalate (PEN), polyimide (PI), [24][25][26] metal foil. [27,28] For substrate of F-PSCs, metal foil has excellent conductivity, flexibility, and thermal stability, but its low light transmittance could limit its application in optoelectronic devices. [29] Indium tin oxide (ITO) is commonly used as electrode material because of its excellent light transmittance and low electrical resistance, [30] while the brittleness limits its application. [31] The metal mesh electrode is a substitute for the flexible electrode with high conductivity and excellent transmittance. [32] The electron transport layer (ETL) is also important component of F-PSCs. TiO 2 is a widely used ETL in perovskite devices because of its suitable energy band position. [33] However, the low heat resistance of PEN and PET polymer substrates limits the processing temperature of TiO 2 in the preparation process. [34] Hence, many low temperature preparation methods about TiO 2 and new ETL materials have been developed. [34,35] Ethoxylated-polyethylenimine is often used for ETL in flexible devices because it is flexible and can improve electronic transport performance. [36] Another Perovskites as promising photovoltaic materials have been widely investigated due to their excellent photoelectric properties. Perovskite optoelectronic devices have been applied in fields of portable energy, light monitors, image ...

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“…[36] To date, 1D material technology has been proven to have a number of advantages in terms of carrier transport, energy efficiency, flexibility, scalability, and device miniaturization that usually outperform the other counterparts. [37][38][39][40] One of the most extensively investigated 1D nanomaterials are the CNTs because of their high charge carrier mobility and highly-favorable solution-processability. [41,42] Till now, both aligned arrays and random networks of CNTs have been used to construct synaptic transistors.…”

Section: D Quantum Materials For Artificial Synapsesmentioning

confidence: 99%

Quantum Artificial Synapses

et al. 2021

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Neuromorphic in-memory computing systems, comprising artificial synapses and neurons, can overcome the energy inefficiency and throughput limitation of today's von Neumann computing architecture. Recently, powered by the unique properties of quantum materials, for example, high mobility, outstanding sensitivity, and strong quantum effect, researchers have built quantum artificial synapses to mimic the biological ones. These quantum electronic/photonic synapses can precisely define their conductance state (or synaptic weight) for emulating synaptic behaviors, which shows bionic performance unreachable by other conventional materials. In this review, the significant achievements in quantum artificial synapses are summarized. First, potential quantum materials used in artificial synapses are discussed with particular attention to quantum dots, nanowires, layered materials, and quasi-2DEG interfaces. Then, the major quantum effects that are utilized in quantum artificial synapses, for example, Josephson effect, quantum tunneling, and spin memory, are reviewed. In addition to the discussion on a single synaptic device, the macroscale integration into artificial visual systems and artificial nerve networks are also highlighted. Finally, the associated future research trends and target applications are also discussed.

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High elasticity of CsPbBr3 perovskite nanowires for flexible electronics

Cited by 22 publications

References 33 publications

Metal Halide Perovskite Nano/Microwires

Metal Halide Perovskite Nano/Microwires

Flexible and Wearable Optoelectronic Devices Based on Perovskites

Quantum Artificial Synapses

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