Solvent‐Based Soft‐Patterning of Graphene Lateral Heterostructures for Broadband High‐Speed Metal–Semiconductor–Metal Photodetectors

Xu, Yang; Ali, Amjad; Shehzad, Khurram; Meng, Nan; Xu, Mingsheng; Zhang, Yuhan; Wang, Xinran; Jin, Chuanhong; Wang, Hongtao; Guo, Yuzheng; Yang, Zongyin; Yu, Bin; Liu, Yuan; He, Qiyuan; Duan, Xiangfeng; Tan, Ping‐Heng; Hu, Weida; Lu, Hai; Hasan, Tawfique

doi:10.1002/admt.201600241

Cited by 60 publications

(31 citation statements)

References 31 publications

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“…Compared with the other types of defects, one characteristic feature of sp 3 -type defects is that such defects can be partially recovered under specific conditions. 235,240,246 In the case of 16,66 oxidized graphene, 131 and graphite with different grain sizes. 236 The solid lines are eye guides.…”

Section: Edgesmentioning

confidence: 99%

Raman spectroscopy of graphene-based materials and its applications in related devices

et al. 2018

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Graphene-based materials exhibit remarkable electronic, optical, and mechanical properties, which has resulted in both high scientific interest and huge potential for a variety of applications. Furthermore, the family of graphene-based materials is growing because of developments in preparation methods. Raman spectroscopy is a versatile tool to identify and characterize the chemical and physical properties of these materials, both at the laboratory and mass-production scale. This technique is so important that most of the papers published concerning these materials contain at least one Raman spectrum. Thus, here, we systematically review the developments in Raman spectroscopy of graphene-based materials from both fundamental research and practical (i.e., device applications) perspectives. We describe the essential Raman scattering processes of the entire first- and second-order modes in intrinsic graphene. Furthermore, the shear, layer-breathing, G and 2D modes of multilayer graphene with different stacking orders are discussed. Techniques to determine the number of graphene layers, to probe resonance Raman spectra of monolayer and multilayer graphenes and to obtain Raman images of graphene-based materials are also presented. The extensive capabilities of Raman spectroscopy for the investigation of the fundamental properties of graphene under external perturbations are described, which have also been extended to other graphene-based materials, such as graphene quantum dots, carbon dots, graphene oxide, nanoribbons, chemical vapor deposition-grown and SiC epitaxially grown graphene flakes, composites, and graphene-based van der Waals heterostructures. These fundamental properties have been used to probe the states, effects, and mechanisms of graphene materials present in the related heterostructures and devices. We hope that this review will be beneficial in all the aspects of graphene investigations, from basic research to material synthesis and device applications.

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Section: Edgesmentioning

confidence: 99%

Raman spectroscopy of graphene-based materials and its applications in related devices

et al. 2018

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“…The Al 2 O 3 ‐protected device exhibits stable electrical characteristics. The device was evaluated by re‐measuring the photoresponse after exposure to an open‐air environment for several months . The device performance was well maintained after that.…”

mentioning

confidence: 99%

A Broadband Fluorographene Photodetector

et al. 2017

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High-performance photodetectors operating over a broad wavelength range from ultraviolet, visible, to infrared are of scientific and technological importance for a wide range of applications. Here, a photodetector based on van der Waals heterostructures of graphene and its fluorine-functionalized derivative is presented. It consistently shows broadband photoresponse from the ultraviolet (255 nm) to the mid-infrared (4.3 µm) wavelengths, with three orders of magnitude enhanced responsivity compared to pristine graphene photodetectors. The broadband photodetection is attributed to the synergistic effects of the spatial nonuniform collective quantum confinement of sp domains, and the trapping of photoexcited charge carriers in the localized states in sp domains. Tunable photoresponse is achieved by controlling the nature of sp sites and the size and fraction of sp /sp domains. In addition, the photoresponse due to the different photoexcited-charge-carrier trapping times in sp and sp nanodomains is determined. The proposed scheme paves the way toward implementing high-performance broadband graphene-based photodetectors.

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“…Furthermore, an interdigitated graphene/Si/graphene (metal-semiconductor-metal) photodetector with equally spaced 10 µm wide graphene-fluorographene fingers was fabricated. [248] For one of the numerous device concepts, Si QDs came into play to achieve graphene/Si Schottky-junction photodetectors. [76] Also, for sensitive mid-IR photodetection, a graphene hybrid phototransistor in conjuction with plasmonic-doped Si QDs was demonstrated.…”

Section: Optoelectronicsmentioning

confidence: 99%

Advances in Functional Nanomaterials Science

Rahimi‐Iman

2020

Annalen der Physik

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Technologies employing nanomaterials, such as electronics, optoelectronics, nanobiotechnologies, quantum optics, and nanophotonics, are perceived as the key drivers of investigations on novel and functional materials and their nanostructures for various applications. It is well understood that the study of such materials and structures has been of great importance for the optimization and development of electrical and optical devices. From such devices, one does not only expect higher efficiencies, but also access to the development of completely new concepts, which are strongly demanded by modern information‐processing, quantum, or medical technologies, and sensing applications. In this context, a wide range of aspects such as the physics of novel materials, as well as materials engineering, characterization, and applications are summarized here. Novel materials, which can be used, for instance, for energy harvesting or light generation, as well as for future logic devices; material engineering, which can lead to improved device functionality and performance in optoelectronics; material physics, the study of which allows insight to be gained into optical and electrical properties of nanostructured systems and quantum materials; and technologies/devices, addressing progress on the application side of sophisticated material systems and quantum structures, are highlighted using representative examples.

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Solvent‐Based Soft‐Patterning of Graphene Lateral Heterostructures for Broadband High‐Speed Metal–Semiconductor–Metal Photodetectors

Cited by 60 publications

References 31 publications

Raman spectroscopy of graphene-based materials and its applications in related devices

Raman spectroscopy of graphene-based materials and its applications in related devices

A Broadband Fluorographene Photodetector

Advances in Functional Nanomaterials Science

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