Two-Dimensional Janus GePAs Monolayer: A Direct-Band-Gap Semiconductor with High and Anisotropic Mobility for Efficient Photocatalytic Water Splitting

Ozbey, Dogukan Hazar; Kılıç, Mehmet Emin; Durgun, Engin

doi:10.1103/physrevapplied.17.034043

Cited by 19 publications

(9 citation statements)

References 62 publications

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“…For the case of J-In 2 SeTe ML, the presence of electron effective mass in the x-direction is 0.30m 0 , and 0.25m 0 for the y-direction, while the hole effective mass along the x-direction (0.26m 0 ) is much smaller than that along the y-direction (5.84m 0 ). In that sense, the high carrier mobility with strong in-plane anisotropy can effectively inhibit the recombination of free electrons and holes [60,61], which can improve the overall efficiency of photocatalytic water splitting.…”

Section: In2xymentioning

confidence: 99%

Tailoring the anisotropic effect of Janus In₂ XY (X/Y = S, Se, Te) monolayers toward realizing multifunctional optoelectronic device applications

Cai

Tan

et al. 2023

New J. Phys.

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Anisotropic effect of two-dimensional materials remains one of the most attractive properties, introducing an additional degree of freedom for tuning physical performances. In this work, we investigate the anisotropies of electronic, transport, piezoelectric, and optoelectronic properties of Janus In2XY (X/Y = S, Se, Te) monolayers (J-In2XY MLs) by performing first-principles calculations. We find that such J-In2XY MLs possess moderate bandgap (2.07~2.29 eV), high carrier mobility (~103 cm-2V-1s-1), visible light absorption (~105 cm−1), large out-of-plane piezoelectric response and ultra-soft mechanical nature . We construct a kind of J-In2XY-based phototransistor to investigate the optoelectronic properties under linearly polarized light. We find that the low recombination probability of photogenerated carriers ensured by anisotropic effect enhances the photocatalytic potential of J-In2XY MLs. And the pivotal role induced by anisotropy in photocurrent can cause a prominent on/off ratio (~100), considerable responsivity (0.038 AW-1, 0.036 AW-1) and external quantum efficiency (10.6%, 11.5%). Our study provides an avenue for the design of future anisotropic J-In2XY-based multifunctional optoelectronic device.

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Section: In2xymentioning

confidence: 99%

Tailoring the anisotropic effect of Janus In₂ XY (X/Y = S, Se, Te) monolayers toward realizing multifunctional optoelectronic device applications

Cai

Tan

et al. 2023

New J. Phys.

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“…From the optical absorption spectra of the Al 2 XYZ monolayers, as shown in Fig. 7, it can be seen that the absorption coefficient exceeds the order of 10 5 cm −1 in the visible light region, which is higher than PtSSe, 17 C 3 XN (X = N, P) 68 and comparable to MM′XX′ (M, M′ = Ga, In; X, X′ = S, Se, Te), 69 GePAs, 70 and Al 2 OS. 71 For the Al 2 SeSTe monolayer, it is up to 2.3 × 10 5 cm −1 in the x / y -direction.…”

Section: Resultsmentioning

confidence: 99%

Two-dimensional Janus monolayers Al₂XYZ (X/Y/Z = S, Se, Te, X ≠ Y ≠ Z): first-principles insight into the photocatalytic and highly adjustable piezoelectric properties

Yan

et al. 2023

J. Mater. Chem. C

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“…There is, however, a dearth of information concerning the mechanical behaviors of 2D heterostructures. Moreover, Janus materials are an emerging class of 2D heterostructure, whose mating faces are either asymmetrically functionalized or exposed to a different local environment, thus presenting opposing properties and functionalities [394][395][396]. However, most related works are still computational, possibly due to difficulties in sample preparation.…”

Section: Outlook For Experimental Characterization and Computational ...mentioning

confidence: 99%

Recent advances in the mechanics of 2D materials

Wang

Hou

Yan

et al. 2023

Int. J. Extrem. Manuf.

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The exceptional physical properties and unique layered structure of two-dimensional (2D) materials has made this class of materials great s candidate for applications in electronics, energy conversion/storage devices, nanocomposites, and multifunctional coatings, among others. At the center of this application-space, mechanical properties play a vital role in materials design, manufacturing, integration and performance. The emergence of 2D materials has also sparked broad scientific inquiry, with new understanding of mechanical interactions between 2D structures and interfaces being of great interest to the community. Building on the dramatic expansion of research activity in recent years, here we provide a review of recent advances in the understanding of the elastic properties, in-plane failures, fatigue performance, interfacial shear/friction, and adhesion behavior of 2D materials. In this article, special emphasis is placed on some new 2D materials, novel characterization techniques and computational methods, as well as insights into deformation and failure mechanisms. A deep understanding of the intrinsic and extrinsic factors that govern 2D material mechanics is further provided, in the hopes that the community may draw design strategies for structural and interfacial engineering of 2D material systems. We end this review article with a discussion of our perspective on the state of the field and outlook on areas for future research directions.

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Two-Dimensional Janus GePAs Monolayer: A Direct-Band-Gap Semiconductor with High and Anisotropic Mobility for Efficient Photocatalytic Water Splitting

Cited by 19 publications

References 62 publications

Tailoring the anisotropic effect of Janus In₂ XY (X/Y = S, Se, Te) monolayers toward realizing multifunctional optoelectronic device applications

Tailoring the anisotropic effect of Janus In₂ XY (X/Y = S, Se, Te) monolayers toward realizing multifunctional optoelectronic device applications

Two-dimensional Janus monolayers Al₂XYZ (X/Y/Z = S, Se, Te, X ≠ Y ≠ Z): first-principles insight into the photocatalytic and highly adjustable piezoelectric properties

Recent advances in the mechanics of 2D materials

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Two-Dimensional Janus GePAs Monolayer: A Direct-Band-Gap Semiconductor with High and Anisotropic Mobility for Efficient Photocatalytic Water Splitting

Cited by 19 publications

References 62 publications

Tailoring the anisotropic effect of Janus In2 XY (X/Y = S, Se, Te) monolayers toward realizing multifunctional optoelectronic device applications

Tailoring the anisotropic effect of Janus In2 XY (X/Y = S, Se, Te) monolayers toward realizing multifunctional optoelectronic device applications

Two-dimensional Janus monolayers Al2XYZ (X/Y/Z = S, Se, Te, X ≠ Y ≠ Z): first-principles insight into the photocatalytic and highly adjustable piezoelectric properties

Recent advances in the mechanics of 2D materials

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Product

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About

Tailoring the anisotropic effect of Janus In₂ XY (X/Y = S, Se, Te) monolayers toward realizing multifunctional optoelectronic device applications

Tailoring the anisotropic effect of Janus In₂ XY (X/Y = S, Se, Te) monolayers toward realizing multifunctional optoelectronic device applications

Two-dimensional Janus monolayers Al₂XYZ (X/Y/Z = S, Se, Te, X ≠ Y ≠ Z): first-principles insight into the photocatalytic and highly adjustable piezoelectric properties