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Relevant bibliographies by topics / Band gap tailoring

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Academic literature on the topic 'Band gap tailoring'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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Journal articles on the topic "Band gap tailoring"

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Koo, Jahyun, Bing Huang, Hosik Lee, Gunn Kim, Jaewook Nam, Yongkyung Kwon, and Hoonkyung Lee. "Tailoring the Electronic Band Gap of Graphyne." Journal of Physical Chemistry C 118, no. 5 (January 27, 2014): 2463–68. http://dx.doi.org/10.1021/jp4087464.

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Li, W., Y. Wang, H. Lin, S. Ismat Shah, C. P. Huang, D. J. Doren, Sergey A. Rykov, J. G. Chen, and M. A. Barteau. "Band gap tailoring of Nd3+-doped TiO2 nanoparticles." Applied Physics Letters 83, no. 20 (November 17, 2003): 4143–45. http://dx.doi.org/10.1063/1.1627962.

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Chambouleyron, I. "Band‐gap tailoring in amorphous germanium‐nitrogen compounds." Applied Physics Letters 47, no. 2 (July 15, 1985): 117–19. http://dx.doi.org/10.1063/1.96288.

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Mangamma, G., T. N. Sairam, M. Chitra, and M. Manikandan. "Tailoring the band gap of ZnO nanostructures using chromium." Physica B: Condensed Matter 610 (June 2021): 412922. http://dx.doi.org/10.1016/j.physb.2021.412922.

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Shang, Shunli, Yi Wang, Zi-Kui Liu, Chia-En Yang, and Shizhuo Yin. "Band structure of FeBO3: Implications for tailoring the band gap of nanoparticles." Applied Physics Letters 91, no. 25 (December 17, 2007): 253115. http://dx.doi.org/10.1063/1.2824869.

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Nair, Aparna V., and B. Manoj. "Tailoring of Energy Band Gap inGraphene-like System by Fluorination." Mapana - Journal of Sciences 18, no. 1 (January 1, 2019): 55–66. http://dx.doi.org/10.12723/mjs.48.4.

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Fluorinated grapheme has a two-dimensional layer structure with a wide band gap. In the present study, Fluoro Graphene (FG) is obtained from Graphene Oxide (GO) through a deoxyfluorination reaction with the aid of Diethylaminosulphurtrifluoride (DAST). The FT-IR exhibited a peak at 1216 cm-1 and the shoulder at 1312 cm-1 were ascribed to the stretching vibration of covalent C–F bonds and C–F2 bonds, respectively. Surface morphology revealed a leafy structure in GO and a rocky structure in FG. The EDS analysis confirmed the fluorination of the graphitic structure. The TEM analysis confirmed the formation of a mixed structure of graphene and carbon dots. The results of structural, morphological and electrical properties of both graphene oxide and fluorographene show the possibility of using these samples as electronic/electrochemical devices in future.

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Yang, Lei, Qi Fu, Wenhui Wang, Jian Huang, Jianliu Huang, Jingyu Zhang, and Bin Xiang. "Large-area synthesis of monolayered MoS2(1−x)Se2x with a tunable band gap and its enhanced electrochemical catalytic activity." Nanoscale 7, no. 23 (2015): 10490–97. http://dx.doi.org/10.1039/c5nr02652k.

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Félix, Roberto, Alfons Weber, Ole Zander, Humberto Rodriguez-Álvarez, Björn-Arvid Schubert, Joachim Klaer, Regan G. Wilks, Hans-Werner Schock, Roland Mainz, and Marcus Bär. "Selenization of CuInS2 by rapid thermal processing – an alternative approach to induce a band gap grading in chalcopyrite thin-film solar cell absorbers?" Journal of Materials Chemistry A 7, no. 5 (2019): 2087–94. http://dx.doi.org/10.1039/c8ta10823d.

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Sernelius, B. E., K. F. Berggren, Z. C. Jin, I. Hamberg, and C. G. Granqvist. "Band-gap tailoring of ZnO by means of heavy Al doping." Physical Review B 37, no. 17 (June 15, 1988): 10244–48. http://dx.doi.org/10.1103/physrevb.37.10244.

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Sahu, Mitali, Pramod K. Singh, S. P. Pandey, and B. Bhattacharya. "Band Gap Tailoring of Ni Doped Ternary Semiconductors for Photovoltaic Applications." Macromolecular Symposia 347, no. 1 (January 2015): 68–74. http://dx.doi.org/10.1002/masy.201400059.

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Dissertations / Theses on the topic "Band gap tailoring"

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Murphy, Neil Richard. "Reactive sputtering of mixed-valent oxides: a route to tailorable optical absorption." University of Dayton / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1427889137.

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"Growth and Characterization of Chalcogenide Alloy Nanowires with Controlled Spatial Composition Variation for Optoelectronic Applications." Master's thesis, 2012. http://hdl.handle.net/2286/R.I.14875.

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abstract: Nanowires (NWs) have attracted many interests due to their advance in synthesis and their unique structural, electrical and optical properties. NWs have been realized as promising candidates for future photonic platforms. In this work, erbium chloride silicate (ECS), CdS and CdSSe NWs growth by vapor-liquid-solid mechanism and their characterization were demonstrated. In the ECS NWs part, systematic experiments were performed to investigate the relation between growth temperature and NWs structure. Scanning electron microscopy, Raman spectroscopy, X-ray diffraction and photoluminescence characterization were used to study the NWs morphology, crystal quality and optical properties. At low growth temperature, there was strong Si Raman signal observed indicating ECS NWs have Si core. At high growth temperature, the excess Si signal was disappeared and the NWs showed better crystal quality and optical properties. The growth temperature is the key parameter that will induce the transition from Si/ECS core-shell NWs structure to solid ECS NWs. With the merits of high Er concentration and long PL lifetime, ECS NWs can serve as optical gain material with emission at 1.5 μm for communications and amplifiers. In the CdS, CdSSe NWs part, the band gap engineering of CdSSe NWs with spatial composition tuning along single NWs were demonstrated. The first step of realizing CdSSe NWs was the controlled growth of CdS NWs. It showed that overall pressure would largely affect the lengths of the CdS NWs. NWs with longer length can be obtained at higher pressure. Then, based on CdS NWs growth and by adding CdSe step by step, composition graded CdSSe alloy NWs were successfully synthesized. The temperature control over the source vapor concentration plays the key role for the growth.
Dissertation/Thesis
M.S. Electrical Engineering 2012

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Book chapters on the topic "Band gap tailoring"

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Singha, Monoj Kumar, and K. G. Deepa. "Band Gap Tailoring and Raman Studies of Mn Doped ZnO Thin Film Deposited by Ultrasonic Spray Pyrolysis." In Springer Proceedings in Physics, 535–40. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-97604-4_83.

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Conference papers on the topic "Band gap tailoring"

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Hussein, Mahmoud I., Karim Hamza, Gregory M. Hulbert, and Kazuhiro Saitou. "Tailoring of Two-Dimensional Band-Gap Materials for Broadband Frequency Isolation." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35226.

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The spatial distribution of material phases within a periodic composite can be engineered to produce band gaps in its frequency spectrum. Applications for such composite materials include vibration and sound isolation. Previous research focused on utilizing topology optimization techniques to design two-dimensional periodic materials with a maximized band gap around a particular frequency or between two particular dispersion branches. While sizable band gaps can be realized, the possibility remains that the frequency bandwidth of the load that is to be isolated might significantly exceed the size of the band gap. In this paper, genetic algorithms are used to design squared bi-material unit cells with a maximized sum of relative band-gap widths over a prescribed frequency range of interest. The optimized unit cells therefore exhibit broadband frequency isolation characteristics. The effects of the ratios of contrasting material properties are also studied. The designed cells are subsequently used, with varying levels of material damping, to form a finite vibration isolation structure, which is subjected to broadband loading conditions. Excellent isolation properties of the synthesized material are demonstrated for this structure.

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Vilcarromero, Johnny, and Francisco C. Marques. "Band-gap tailoring in amorphous hydrogenated germanium-nitrogen alloys." In The 8th Latin American congress on surface science: Surfaces , vacuum, and their applications. AIP, 1996. http://dx.doi.org/10.1063/1.51110.

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Alam, Navshad, Vishal Singh Chandel, Tahira Khatoon, Sachin Tripathi, Ameer Azam, Rashmi, and Mohammad Shariq. "Tailoring of Band Gap in Manganese doped Sodium Hexa-titanate." In 2018 International Conference on Computational and Characterization Techniques in Engineering & Sciences (CCTES). IEEE, 2018. http://dx.doi.org/10.1109/cctes.2018.8673983.

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Dasgupta, S., C. Bose, M. R. Singh, and R. H. Lipson. "Dielectric Material Based Band Gap Tailoring For 1D Photonic Crystal." In TRANSPORT AND OPTICAL PROPERTIES OF NANOMATERIALS: Proceedings of the International Conference—ICTOPON-2009. AIP, 2009. http://dx.doi.org/10.1063/1.3183426.

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Isawa, S., Y. Akashi, A. Matsumoto, K. Akahane, Y. Matsushima, H. Ishikawa, and K. Utaka. "Regional band-gap tailoring of 1550nm-band InAs quantum dot Intermixing by controlling ion implantation depth." In 2019 Compound Semiconductor Week (CSW). IEEE, 2019. http://dx.doi.org/10.1109/iciprm.2019.8819190.

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Hassan, Walid M. I., Mahmoud M. Khader, Amit Verma, Reza Nekovei, and M. P. Anantram. "Oxygen passivation as effective technique for tailoring the nature of band gap of silicon nanowires." In 2015 IEEE 15th International Conference on Nanotechnology (IEEE-NANO). IEEE, 2015. http://dx.doi.org/10.1109/nano.2015.7388774.

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Gao, R. Z., G. Y. Zhang, and T. Ioppolo. "Band Gaps for Elastic Wave Propagation in a Periodic Composite Beam Structure Incorporating Surface Energy, Transverse Shear and Rotational Inertia Effects." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87236.

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A new model for determining band gaps for elastic wave propagation in a periodic composite beam structure is developed using a non-classical Timoshenko beam model that incorporates the surface energy, transverse shear and rotational inertia effects. The Bloch theorem and transfer matrix method for periodic structures are employed in the formulation. The new model reduces to the classical elasticity-based model when the surface energy effect is not considered. It is shown that the band gaps predicted by the current model depend on the surface elastic constants of each constituent material, beam thickness, unit cell size, and volume fraction. The numerical results reveal that the band gap based on the current non-classical model is always larger than that given by the classical model when the beam thickness is very small, but the difference is diminishing as the thickness becomes large. Also, it is found that the first frequency for producing the band gap and the band gap size decrease with the increase of the unit cell length according to both the current and classical models. In addition, it is observed that the volume fraction has a significant effect on the band gap size, and large band gaps can be obtained by tailoring the volume fraction and material parameters.

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Kumar, Vipin, D. K. Sharma, Sonalika Agrawal, Kapil K. Sharma, D. K. Dwivedi, and M. K. Bansal. "Tailoring of optical band gap by varying Zn content in Cd1-xZnxS thin films prepared by spray pyrolysis method." In INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946675.

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Wang, Hao, Changjun Liao, Guanghan Fan, and Jiye Cai. "Tailoring the EL spectrum of the GaAlInP DBR LED by the one-dimensional GaAlAs/AlAs photonic band-gap structure." In Microelectronics, MEMS, and Nanotechnology, edited by Chennupati Jagadish, Kent D. Choquette, Benjamin J. Eggleton, Brett D. Nener, and Keith A. Nugent. SPIE, 2004. http://dx.doi.org/10.1117/12.532749.

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Cazzulani, Gabriele, Emanuele Riva, Edoardo Belloni, and Francesco Braghin. "Design of Disordered Periodic Structures for Mode Localization." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3876.

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Periodic structures are the repetition of unit cells in space, that provide a filtering behavior for wave propagation. In particular, it is possible to tailor the geometrical, physical and elastic properties of the unit cells, in order to attenuate certain frequency bands, called band-gaps or stop-bands. Having each element characterized with the same parameters, the filtering behavior of the system can be described through the wave propagation properties of the unit cell. This is technologically impossible to obtain, therefore the Lyapunov factor is used, in order to define the mean attenuation of a quasi-periodic structure. Tailoring Gaussian unit cell properties potentially allows to extend the stop-bands width in the frequency domain. A drawback is that some unexpected resonance peaks may lie in the neighborhood of the extended regions. However, the correspondent mode-shapes are localized in a particular region of the structure, and they partially decrease the global attenuating behavior. In this paper, the aperiodicity introduced in the otherwise perfect repetition is investigated, providing an explanation for the mode-localization problem and for the stop-bands extension. Then, the proposed approach is applied to a passive quasi-periodic beam, characterized from a localized peak within a designed band-gap. The geometrical properties of its aperiodic parts are changed in order to deterministically move the localization peak in the frequency response. Numerical and experimental results are compared.

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