Infrared Optical Response of Metallic Graphene Nanoribbons

Duan, Zigang; Liao, Wenhu; Zhou, Guanghui

doi:10.1155/2010/258019

Cited by 10 publications

(11 citation statements)

References 37 publications

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“…Graphene nanoribbons were theoretically proposed for IR photodetectors due to their tunable bandgap in IR range . The bandgaps of graphene nanoribbons can be easily tailored by engineering their widths .…”

Section: Ir Sensitive Gfetsmentioning

confidence: 99%

Photosensitive Graphene Transistors

et al. 2014

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High performance photodetectors play important roles in the development of innovative technologies in many fields, including medicine, display and imaging, military, optical communication, environment monitoring, security check, scientific research and industrial processing control. Graphene, the most fascinating two-dimensional material, has demonstrated promising applications in various types of photodetectors from terahertz to ultraviolet, due to its ultrahigh carrier mobility and light absorption in broad wavelength range. Graphene field effect transistors are recognized as a type of excellent transducers for photodetection thanks to the inherent amplification function of the transistors, the feasibility of miniaturization and the unique properties of graphene. In this review, we will introduce the applications of graphene transistors as photodetectors in different wavelength ranges including terahertz, infrared, visible, and ultraviolet, focusing on the device design, physics and photosensitive performance. Since the device properties are closely related to the quality of graphene, the devices based on graphene prepared with different methods will be addressed separately with a view to demonstrating more clearly their advantages and shortcomings in practical applications. It is expected that highly sensitive photodetectors based on graphene transistors will find important applications in many emerging areas especially flexible, wearable, printable or transparent electronics and high frequency communications.

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Section: Ir Sensitive Gfetsmentioning

confidence: 99%

Photosensitive Graphene Transistors

et al. 2014

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“…Due to the the geometry and boundary conditions [22][23][24], these two types of GNRs show distinct electronic characteristics in the low energy regime. The linear and nonlinear response of GNRs due to a linearly-polarized electric field were studied in [25][26][27][28][29][30][31]. The non-perturbative DC conductance due to an applied circularlypolarized field in zzGNR and acGNR [28,29] was also investigated.…”

mentioning

confidence: 99%

Third-Order Optical Response of Metallic Armchair Graphene Nanoribbons to an Elliptically-Polarized Terahertz Excitation Field

Wang

Andersen

2017

IEEE J. Select. Topics Quantum Electron.

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We present a theoretical description of the third-order response induced by an ellipticallypolarized terahertz beam normally-incident on intrinsic and extrinsic metallic armchair graphene nanoribbons. Our results show that using a straightforward experimental setup, it should be possible to observe novel polarization-dependent nonlinearities at low excitation field strengths of the order of 10 4 V/m. At low temperatures the Kerr nonlinearities in extrinsic nanoribbons persist to significantly higher excitation frequencies than they do for linear polarizations, and at room temperatures, the third-harmonic nonlinearities are enhanced by 2-3 orders of magnitude. Finally, the Fermi-level and temperature dependence of the nonlinear response is characterized.

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“…It is expected that there will be breakthroughs in high-speed graphene nanoribbon THz optoelectronics [1]. Due to the linear band dispersion shown in metallic armchair graphene nanoribbons in the THz spectrum, it is therefore possible to generate charge carriers in these nanoribbons by optically stimulated direct interband transitions over the entire THz spectrum, a functionality unmatched by any known material [1,9,10].…”

Section: Tunability Of the Terahertz Nonlinear Response Of Graphene Nmentioning

confidence: 99%

“…Duan et.al. [9] studied the linear response of intrinsic metallic armchair GNR in the infrared regime with a linearly-polarized applied electric at low temperatures. Sasaki et.al.…”

Section: Introductionmentioning

confidence: 99%

“…Due to the the geometry and boundary conditions [39,41,42], these two types of GNRs show distinct electronic characteristics in the low energy regime. The linear and nonlinear response of GNRs due to a linearlypolarized electric field were studied in [9,10,75,81,82,114,115]. The non-perturbative DC conductance due to an applied circularly-polarized field in zzGNR and acGNR [114,115] was also investigated.…”

Section: Introductionmentioning

confidence: 99%

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Terahertz nonlinear optical response of armchair graphene nanoribbons

Wang¹

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Last but not least, I would like to extend my greatest gratitude to my family. My father worked very hard in the last two decades to give me a better platform. He has always been supportive of me in so many ways, without all his sacrifices, I will not even have a chance to purse my Ph.D. life. My mother is always there for me to help me endure the difficult times and show unconditional faith in me. To my twin brother, you are always the mirror of my soul, have overcome many difficulties and achieved great things these years.

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Infrared Optical Response of Metallic Graphene Nanoribbons

Cited by 10 publications

References 37 publications

Photosensitive Graphene Transistors

Photosensitive Graphene Transistors

Third-Order Optical Response of Metallic Armchair Graphene Nanoribbons to an Elliptically-Polarized Terahertz Excitation Field

Terahertz nonlinear optical response of armchair graphene nanoribbons

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