Remarkable plasticity and softness of polymorphic InSe van der Waals crystals

Ma, Yupeng; Liu, Yifei; Chen, Heyang; Xudong, Bai; Zhao, Keli; Jin, Min; Wei, Tian‐Ran; Shi, Xun

doi:10.1016/j.jmat.2023.01.011

Cited by 15 publications

(5 citation statements)

References 49 publications

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“…The data on elongation for AgCl, AgBr, and Ag 2 S in this study are represented using solid symbols, while others represented using hollow symbols are from previous studies. [5,6,8,15,[37][38][39] In this study, we demonstrate that polycrystalline AgCl and AgBr are wide-gap inorganic materials with remarkable plasticity/ductility (Figure 1) that are even superior to previously reported ductile Ag 2 S materials. The atomic-scale study provides clear evidence that the plasticity and ductility of AgCl and AgBr are attributed to the presence of diffuse and "catching" chemical bonds during slip.…”

Section: Introductionmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

“…Elongation versus band gap at room temperature for various inorganic bulk materials, including ductile metals, brittle semiconductors, dielectrics, and plastically deformable semiconductors. The data on elongation for AgCl, AgBr, and Ag 2 S in this study are represented using solid symbols, while others represented using hollow symbols are from previous studies [5,6,8,15,[37][38][39].…”

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confidence: 99%

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Room‐Temperature Wide‐Gap Inorganic Materials with Excellent Plasticity

Huang,

Chen,

Gao

et al. 2023

Adv Funct Materials

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In general, inorganic non‐metallic materials exhibit brittleness, and achieving plasticity in wide‐gap semiconductors or dielectrics poses an even greater challenge. Historically, silver halides have been suggested to be ductile; however, their deformability under different load modes has not been well demonstrated, and the underlying mechanisms are not fully understood. In this study, the authors demonstrate the excellent plasticity of AgCl and AgBr polycrystals at room temperature under tension, bending, compression, and roller pressing. In particular, the rolling reduction rate of AgCl/AgBr exceeds 97%, corresponding to the plastic extensibility from 3600% to 4200%. The metal‐like plasticity and multiple slip systems are attributed to the ionic features, specifically the Coulombic nature of the Ag‐Cl/Br interactions, and the appreciable polarization of the anions. Such less localized diffuse bonding can be readily switched upon atomic gliding, thus ensuring slip without cleavage. This study contributes to the advancement of the understanding and development of wide‐gap plastically deformable inorganic materials for applications in flexible, shape‐conformable high‐power electronics and dielectrics.

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Section: Introductionmentioning

confidence: 57%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Room‐Temperature Wide‐Gap Inorganic Materials with Excellent Plasticity

Huang,

Chen,

Gao

et al. 2023

Adv Funct Materials

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“…The MoTe 2 bulk crystals were purchased from SixCarbon Technology Shenzhen. The InSe bulk crystals were prepared by the Bridgman method and provided by Ma as described elsewhere [ 68 ] and purchased from SixCarbon Technology were both used in this work. The Au/Cr (35/5 nm) electrodes were pre‐deposited on the silicon substrate with 300 nm SiO 2 by electron beam evaporation (Kert.…”

Section: Methodsmentioning

confidence: 99%

High Performance Self‐Powered and Vis–Infrared Broadband Photodetectors Based on MoTe₂/InSe Van der Waals Heterostructure

He,

Feng,

et al. 2024

Advanced Optical Materials

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Self‐powered and broadband photodetectors have important applications in modern technologies and have garnered significant research interest with the increasing concern for green and energy‐saving. The emerging 2D materials InSe is considered to be a promising candidate for next‐generation photodetectors due to the high carrier mobility, excellent photoelectric response, and flexibility. However, due to its weak absorption of infrared light, it remains a challenging task to achieve high‐performance, self‐powered, and broadband photodetection. Here, a MoTe2/InSe van der Waals heterostructure (vdWH) device is successfully constructed. Benefiting from the unique band alignment of the heterostructure, a strong built‐in electric field is formed. Excitingly, the device exhibits excellent photovoltaic performance with a large open voltage and short circuit current of 390.19 mV and 20.32 nA, respectively. In particular, in self‐powered mode, the responsivity (R) is up to 433.88 mA W−1 and the specific detectivity (D*) reaches 1.65 × 1012 Jones under 405 nm irradiation. Meanwhile, an ultrahigh Ilight/Idark ratio over 104, a fast response speed of 99/117 µs, and a broadband photoresponse range from 405 to 980 nm are achieved. The device demonstrates excellent comprehensive self‐powered photodetection performance. This work reveals the great potential of the MoTe2/InSe vdWH for high‐performance, broadband, and self‐powered photodetection.

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“…[ 36 ] β ‐InSe crystal with a space group of P 6 3 / mmc is a typical layered structure in which each layer is constituted by the In–Se honeycomb framework in the ab lattice plane. [ 37 ] These In–Se layers are stacked along the c direction in the way of Se–In–In–Se, with a vdW gap of 0.8 nm between Se and Se shown in Figure a. Wei et al [19b] investigated its deformation along the aforementioned two directions.…”

Section: Mechanisms For the Deformation Of Inorganic Plastic Te Semic...mentioning

confidence: 99%

Deformation Mechanisms of Inorganic Thermoelectric Materials with Plasticity

Ge,

Li,

Zhu

et al. 2023

Adv Energy and Sustain Res

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Flexible inorganic thermoelectric (TE) materials are beneficial to the development of wireless wearable devices due to their plasticity and high performance. Recently, many novel inorganic semiconductors with plasticity, such as ZnS single crystal, Ag2S‐based alloys, as well as single‐crystalline InSe and SnSe2, attract great attention. They are supposed to break the predicament between power output and mechanical deformability for TE systems with plasticity. To better understand the deformation of TE materials with plasticity and explore new systems, different deformation mechanisms for these plastically deformable inorganic TE materials are summarized. First, the concepts and requirements for inorganic TEs are presented with plasticity in wearable devices. Afterward, their mechanical properties and deformation mechanisms are elaborated including dislocation glide, interlayer slippage of atomic stacks, dual slippage of atomic stacks and dislocations, as well as phase transformation. Finally, a general outlook from previous research is suggested for forecasting the future directions. It is anticipated that this review can guide the design of inorganic TE materials with plasticity and provide insight into the wider application of plastically deformable inorganic semiconductors in electronic materials and devices.

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Remarkable plasticity and softness of polymorphic InSe van der Waals crystals

Cited by 15 publications

References 49 publications

Room‐Temperature Wide‐Gap Inorganic Materials with Excellent Plasticity

Room‐Temperature Wide‐Gap Inorganic Materials with Excellent Plasticity

High Performance Self‐Powered and Vis–Infrared Broadband Photodetectors Based on MoTe₂/InSe Van der Waals Heterostructure

Deformation Mechanisms of Inorganic Thermoelectric Materials with Plasticity

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Remarkable plasticity and softness of polymorphic InSe van der Waals crystals

Cited by 15 publications

References 49 publications

Room‐Temperature Wide‐Gap Inorganic Materials with Excellent Plasticity

Room‐Temperature Wide‐Gap Inorganic Materials with Excellent Plasticity

High Performance Self‐Powered and Vis–Infrared Broadband Photodetectors Based on MoTe2/InSe Van der Waals Heterostructure

Deformation Mechanisms of Inorganic Thermoelectric Materials with Plasticity

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Product

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High Performance Self‐Powered and Vis–Infrared Broadband Photodetectors Based on MoTe₂/InSe Van der Waals Heterostructure