Performance analysis of functionalized silicene <scp>nanoribbon</scp>‐based photodetector

Kharadi, Mubashir A.; Malik, Gul Faroz A.; Shah, Khurshed A.; Khanday, Farooq Ahmad

doi:10.1002/jnm.2809

Cited by 7 publications

(6 citation statements)

References 31 publications

(52 reference statements)

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“…They calculated the detectivity value in the order of 10 12 under 0.09 mW/nm 2 illumination at 1100 nm. This showed that silicene is an excellent candidate for photodetectors due to the excellent performance compared to photodetectors made using other 2D materials . However, our study provides the first experimental demonstration that silicene photodetectors have an excellent performance.…”

Section: Resultsmentioning

confidence: 68%

Silicene/Silicene Oxide Nanosheets for Broadband Photodetectors

González-Rodríguez

Castillo

Hathaway

et al. 2022

ACS Appl. Nano Mater.

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Nanosheets of silicene, a 2D material made of silicon atoms, have great potential for use in next-generation electronic and optoelectronic devices due to their unique properties. However, issues in the large-scale production of silicene nanosheets and in their degradation still present challenges for these applications. Here, we report a method to obtain large quantities of single to fewlayer thick silicene/silicene oxide ("Si nanosheets") from calcium disilicide (CaSi 2 ). We also show that the silicene nanosheets experience oxidation in air and are highly oxidized after 12 weeks of storage. Density functional theory studies were performed and provide a detailed understanding of this oxidation. Silicene/ silicene oxide nanosheet-based photodetector devices were also fabricated for the first time. They show a broadband response in the visible spectral range with outstanding responsivity (14.3 A/W), detectivity (3 × 10 10 Jones), and external quantum efficiency (44.6%), demonstrating the promising applications of this material for optoelectronic devices.

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Section: Resultsmentioning

confidence: 68%

Silicene/Silicene Oxide Nanosheets for Broadband Photodetectors

González-Rodríguez

Castillo

Hathaway

et al. 2022

ACS Appl. Nano Mater.

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“…Silicene, regarded as the 'silicon version of graphene,' also has a hexagonal structure [117][118][119]. Silicene is the single-layer version of graphene, having the constituent Si atoms arranged in a hexagonal form via covalent bonds [22,23]. Silicene shares many properties of graphene, like zero bandgap, high mobility of carriers and the presence of a Dirac cone in its band structure.…”

Section: Photodetectors Based On 2d-heterostructuresmentioning

confidence: 99%

“…Generally, in 2D materials like TMDCs, these singularities reside near conduction and valence bands. This leads to an increased probability of electron-hole pair generation upon excitation with light [22,23]. TMDCs photodetectors show excellent light to current conversion with high responsivity [22].…”

Section: Introductionmentioning

confidence: 99%

Photo-Detectors Based on Two Dimensional Materials

Kharadi¹,

Malik²,

Khanday³

2021

Photodetectors [Working Title]

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2D materials like transition metal dichalcogenides, black phosphorous, silicene, graphene are at the forefront of being the most potent 2D materials for optoelectronic applications because of their exceptional properties. Several application-specific photodetectors based on 2D materials have been designed and manufactured due to a wide range and layer-dependent bandgaps. Different 2D materials stacked together give rise to many surprising electronic and optoelectronic phenomena of the junctions based on 2D materials. This has resulted in a lot of popularity of 2D heterostructures as compared to the original 2D materials. This chapter presents the progress of optoelectronic devices (photodetectors) based on 2D materials and their heterostructures.

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“…In addition, Ni et al [18], simulated a Silicene p-i-n tunneling field effect transistor (TFET) by adsorption of different transition metal (TM) atoms on device regions. Furthermore, Kharadi et al [19], modeled a zigzag silicene nanoribbon (ZSiNR)based photodetector in which Li-Cl co-decorated zigzag silicene nanoribbon is used, and its performance was analyzed in terms of photoresponsivity and detectivity. Azad et al [20], have also analyzed the detectivity of ASiNR-based infrared photodetectors in an intrinsic, p-doped, and n-doped form, through density functional theory(DFT) calculation.…”

Section: Introductionmentioning

confidence: 99%

Non-equilibrium Green’s function approach for simulation asymmetric source-drain silicene-based photodetectors

Alaee,

Sadeghzadeh,

Ostovari

2023

Phys. Scr.

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Employing tight-binding approximation coupling to Non-Equilibrium Green’s Function (NEGF) approach, we have simulated three photodetectors based on 20 nm Armchair-Silicene-Nanoribbons (ASiNR) with asymmetric source (Ir-doped silicene) and drain (Cu-, Ag-, or Au-doped silicene) contacts. In this study, monochromatic illumination in the range of 0.1-10 eV with the intensity of 1kW cm-2 is used for the simulation of the photocurrent, photoresponsivity, quantum efficiency, and detectivity. It is shown that the highest peak in the photocurrent spectrum occurs at the 273 nm incident wavelength for all devices under consideration, where the Ir-Cu device has presented enhanced photodetector characteristics than Ir-Ag and Ir-Au devices. It is also found that only transitions between two subbands with the same index are allowed. Moreover, the first peak in the photocurrent spectrum is related to the main band gap of ASiNR. Additionally, the simulated dark and total currents versus source-drain voltage reveal that photocurrent caused a negative shift in the total current proportional to incident light intensity. The proposed photodetector has the advantage that it is fully compatible with established silicon technology.

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Performance analysis of functionalized silicene nanoribbon‐based photodetector

Cited by 7 publications

References 31 publications

Silicene/Silicene Oxide Nanosheets for Broadband Photodetectors

Silicene/Silicene Oxide Nanosheets for Broadband Photodetectors

Photo-Detectors Based on Two Dimensional Materials

Non-equilibrium Green’s function approach for simulation asymmetric source-drain silicene-based photodetectors

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