Academic literature on the topic 'Graphene-tellurium Nanowire'

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Journal articles on the topic "Graphene-tellurium Nanowire"

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Pradhan, Avradip, Ahin Roy, Shalini Tripathi, Anirban Som, Depanjan Sarkar, Jayanta Kumar Mishra, Kallol Roy, T. Pradeep, N. Ravishankar, and Arindam Ghosh. "Ultra-high sensitivity infra-red detection and temperature effects in a graphene–tellurium nanowire binary hybrid." Nanoscale 9, no. 27 (2017): 9284–90. http://dx.doi.org/10.1039/c7nr01860f.

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Hwang, Tae-Yeon, Gwang-Myeong Go, Siwoo Park, Jimin Lee, Yoseb Song, Seil Kim, Hong-Baek Cho, and Yong-Ho Choa. "Pt/Graphene Catalyst and Tellurium Nanowire-Based Thermochemical Hydrogen (TCH) Sensor Operating at Room Temperature in Wet Air." ACS Applied Materials & Interfaces 11, no. 50 (November 14, 2019): 47015–24. http://dx.doi.org/10.1021/acsami.9b12604.

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Gao, Jie, Chengyan Liu, Lei Miao, Xiaoyang Wang, Ying Peng, and Yu Chen. "Improved Thermoelectric Performance in Flexible Tellurium Nanowires/Reduced Graphene Oxide Sandwich Structure Hybrid Films." Journal of Electronic Materials 46, no. 5 (November 28, 2016): 3049–56. http://dx.doi.org/10.1007/s11664-016-5143-8.

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He, Jiarui, Yuanfu Chen, Weiqiang Lv, Kechun Wen, Zegao Wang, Wanli Zhang, Yanrong Li, Wu Qin, and Weidong He. "Three-Dimensional Hierarchical Reduced Graphene Oxide/Tellurium Nanowires: A High-Performance Freestanding Cathode for Li–Te Batteries." ACS Nano 10, no. 9 (August 26, 2016): 8837–42. http://dx.doi.org/10.1021/acsnano.6b04622.

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Sana Rafiq, Hafiza, Batool Fatima, Dilshad Hussain, Abrar Mohyuddin, Saadat Majeed, Sumaira Manzoor, Muhammad Imran, et al. "Selective electrochemical sensing of hemoglobin from blood of β-thalassemia major patients by tellurium nanowires-graphene oxide modified electrode." Chemical Engineering Journal 419 (September 2021): 129706. http://dx.doi.org/10.1016/j.cej.2021.129706.

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Gao, Jie, Chengyan Liu, Lei Miao, Xiaoyang Wang, Chao Li, Rong Huang, Yu Chen, and Sakae Tanemura. "Power factor enhancement via simultaneous improvement of electrical conductivity and Seebeck coefficient in tellurium nanowires/reduced graphene oxide flexible thermoelectric films." Synthetic Metals 210 (December 2015): 342–51. http://dx.doi.org/10.1016/j.synthmet.2015.10.018.

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Tsai, Hung-Wei, Alireza Yaghoubi, Tsung-Cheng Chan, Chun-Chieh Wang, Wei-Ting Liu, Chien-Neng Liao, Shih-Yuan Lu, Lih-Juann Chen, and Yu-Lun Chueh. "Electrochemical synthesis of ultrafast and gram-scale surfactant-free tellurium nanowires by gas–solid transformation and their applications as supercapacitor electrodes for p-doping of graphene transistors." Nanoscale 7, no. 17 (2015): 7535–39. http://dx.doi.org/10.1039/c5nr00876j.

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Qiu, Gang, Adam Charnas, Chang Niu, Yixiu Wang, Wenzhuo Wu, and Peide D. Ye. "The resurrection of tellurium as an elemental two-dimensional semiconductor." npj 2D Materials and Applications 6, no. 1 (March 14, 2022). http://dx.doi.org/10.1038/s41699-022-00293-w.

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AbstractThe graphene boom has triggered a widespread search for novel elemental van der Waals materials thanks to their simplicity for theoretical modeling and easy access for material growth. Group VI element tellurium is an unintentionally p-type doped narrow bandgap semiconductor featuring a one-dimensional chiral atomic structure which holds great promise for next-generation electronic, optoelectronic, and piezoelectric applications. In this paper, we first review recent progress in synthesizing atomically thin Te two-dimensional (2D) films and one-dimensional (1D) nanowires. Its applications in field-effect transistors and potential for building ultra-scaled Complementary metal–oxide–semiconductor (CMOS) circuits are discussed. We will also overview the recent study on its quantum transport in the 2D limit and progress in exploring its topological features and chiral-related physics. We envision that the breakthrough in obtaining high-quality 2D Te films will inspire a revisit of the fundamental properties of this long-forgotten material in the near future.
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Dissertations / Theses on the topic "Graphene-tellurium Nanowire"

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Pradhan, Avradip. "Study of Photo-generated Charge Transport in Graphene-based Hybrid Structures." Thesis, 2017. http://etd.iisc.ac.in/handle/2005/4221.

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Hybrid structures involving atomic/molecular membranes from two or more layered materials are emerging as a platform for novel class of field effect transistors (FETs), p - n junctions, photo-detectors, photo-voltaic devices and so on. The interface formed by dissimilar materials gives rise to new functionalities, which are otherwise unattainable with individual constituent species. In addition to enormous potential in device application, these hybrid devices have raised several fundamental questions, especially in the context of inter-layer transfer of charge when subjected to external electric field, optical excitation etc. It is essential to explore the microscopic nature of the interface, which plays a significant role in efficient charge transfer dynamics from one material to the other. Moreover, the accumulation of charge carriers at the interface can control the optical properties of the individual materials by modifying their band structures as well as energetics of the fundamental excitations, namely, excitons or trions, which are now generating great interest. The hybrid photo-detector is one such class of device, which is becoming popular because of its direct application to various fields as well as novel scientific research purposes. A single layer graphene has traditionally been of great interest for photo-detection due to a strong radiation coupling over a broad wavelength spectrum (_ 0:3 􀀀 6 _m). Although the sensitivity of these bare graphene devices are comparatively poor because of its low optical absorption (_ 2%) of electromagnetic radiation. In order to overcome this issue, graphene-based hybrid structures (made of graphene with an optically active material) are being investigated, which are relatively new and innovative. When the optically active material is irradiated using an optical source, electron and hole pairs are generated, out of which one species of the charge carriers gets collected in graphene. Because of high carrier lifetime in graphene, most of these graphene-based hybrid devices reach remarkably high sensitivity. In this thesis, our main objective will be to investigate the charge transfer mechanism from the optically active material to graphene via opto-electronic measurement. This work has been divided into two parts: In the first part, we look into the opto-electronic response in graphene - WSe2 (Tungsten diselenide) hybrid structure. WSe2, a member of transition metal dichalcogenides (TMDC) family, is also a two-dimensional van der Waals material. By fabricating a hybrid structure made of single layer graphene and single layer WSe2, we achieve significantly high photo-responsivity value (_ 1010 AW􀀀1). While taking the photo-current spectra by sweeping the excitation wavelength (_) from 550􀀀800 nm, we find that both the photo-response (_R) and the relaxation time (_ ) are sensitive to the signatures of both A and B excitonic peaks (at 712 and 570 nm respectively) of WSe2. By using a coherent charge transfer model, we find that graphene - WSe2 hybrid structure forms a new coherent ground state for the excitons by transferring electrons into graphene and keeping holes in WSe2. The slow relaxation in the time scale has been explained by incoherent back transfer of charge from graphene to WSe2. We have also found an alternative method to calculate the binding energy of the excitons from the photo-current spectra. In the second part, we investigate the photo-response of uniformly dropcast TeNW (Tellurium nanowire) on graphene in the near infra-red (NIR) regime (920 􀀀 1720 nm). We start with the basic opto-electronic characterization in bare TeNW, and find that TeNW because of its low band gap indeed shows infra-red detection. But the sensitivity of such devices is very poor (_ 10􀀀2􀀀10􀀀4 AW􀀀1). On the other hand, photo-responsivity in graphene - TeNW hybrid device exceeds _ 106 AW􀀀1 at 175 K. The corresponding speci_c detectivity (_ 1013 Jones) reaches the highest order of magnitude reported for infra-red detectors. The charge transfer from TeNW to graphene is dominated by photogating mechanism, which gets suppressed at high temperature because of conduction through the TeNWs. This sets the upper limit for the operating range of temperature, which can still be improved by controlling the defect density and inter-wire electronic coupling. In summary, our experimental results open up a new direction to investigate the charge transfer dynamics as well as the nature of the interface between the materials in a hybrid structure at the microscopic level. The understanding of light-matter interaction at the atomic scale will impact now opto-electronic designs as well as hybrid materials with unprecedented functionality.
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