Remove plagiarism in the attached document

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timer Asked: Jan 8th, 2019
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Question Description

1. Remove the plagiarism to below 15% without changing the science. You need a good knowledge of thermoelectric properties of a material. Do NOT use a software, and do not interfere with the references.

2. Correct grammatical mistakes.

Intervention4 by Edward M Submission date: 08-Jan-2019 11:13AM (UT C-0700) Submission ID: 1062257503 File name: Lit.docx (25.69K) Word count: 736 Character count: 4092 Intervention4 ORIGINALITY REPORT 90 % SIMILARIT Y INDEX 20% 90% 17% INT ERNET SOURCES PUBLICAT IONS ST UDENT PAPERS PRIMARY SOURCES 1 Kai-Xuan Chen, Min-Shan Li, Dong-Chuan Mo, Shu-Shen Lyu. "Nanostructural thermoelectric materials and their performance", Frontiers in Energy, 2018 73% Publicat ion 2 Jing Wu, Yabin Chen, Junqiao Wu, Kedar Hippalgaonkar. "Perspectives on Thermoelectricity in Layered and 2D Materials", Advanced Electronic Materials, 2018 Publicat ion Exclude quotes Of f Exclude bibliography On Exclude matches Of f 16% Intervention4 GRADEMARK REPORT FINAL GRADE GENERAL COMMENTS /0 Instructor PAGE 1 PAGE 2
The Figure of merit (ZT), is defined as S2σT/κ, where S is the Seebeck coefficient, σ is the electrical conductivity, and κ is the thermal conductivity, including both from electrons (κe) and lattice vibrations (phonons, κL) as heat carriers at a thermodynamic temperature, T. The optimization of these three parameters (S, σ, κ) to achieve high ZT has become the key challenge due to their interdependence [1]. They are all strongly dependent on the material’s electronic structure and carrier concentration. Several researchers have attempted to increase ZT by lowering κ and increasing σ. Zhao et al. [2] achieved dual control of phonon- and electron-transport properties by embedding nanoparticles of a soft magnetic material in a thermoelectric matrix and thereby improved the thermoelectric performance of the resulting nanocomposites. Pei el al. [3] found that PbTe with nanoscale Ag2Te precipitates and La doping had a low lattice thermal conductivity κ. In the work of Johnsen et al. [4]the nanostructuring in (PbS)1–x(PbTe)x samples led to substantial decreases in lattice thermal conductivity relative to pristine PbS. Gahtori et al. [5] reported a ZTof 2.1 at 973 K in Cu2Se with different nanoscale dimensional defect features, in which the low thermal conductivity origined from the enhanced low-to-high wavelength phonon scattering by different kinds of defects. Ahmad et al.[6] reported a ZT of 1.81 at 1100 K in p-type SiGe alloys since YSi2 nanoinclusions formed coherent inter-faces with SiGe matrix and facilitated reduction in the grainsize of SiGe, which greatly reduced the thermal conductivity κ. In addition, other researchers conducted a lot of research in reducing the thermal conductivity in the systems of grapheme [7], [8]. The electrical properties can be tuned as well to enhance the thermoelectric properties. The electrical conductivity can usually be increased by enhancing the electron mobility or altering the electronic structures. Nanostructur- ing can enhance the density of states near Fermi level via quantum confinement, and therefore, increase the thermo- power, which provides a way to decouple the thermopower and electrical conductivity [9]. For example, Ginting et al. [10]synthesized composites with nano-inclusions of n- type (PbTe0.93 – xSe0.07Clx)0.93(PbS)0.07 while the composites with nano-inclusions enhanced the Seebeck coefficient in a dilute Cl-doped compound and led to a ZT of 1.52 at 700 K. Li et al. [11] synthesized SnTe particles with controlled sizes from micro-scale to nano-scale and found that the ZT of the specimen using 165-nm-sized nano- particles was about 2.3 times that of the SnTe bulk samples due to the enhanced phonon scattering. Reference. [1] J. Wu, Y. Chen, J. Wu, and K. Hippalgaonkar, “Perspectives on Thermoelectricity in Layered and 2D Materials,” vol. 1800248, pp. 1–18, 2018. [2] W. Zhao et al., “Superparamagnetic enhancement of thermoelectric performance,” Nature, vol. 549, no. 7671, pp. 247–251, 2017. [3] Y. Pei, J. Lensch-Falk, E. S. Toberer, D. L. Medlin, and G. J. Snyder, “High thermoelectric performance in PbTe due to large nanoscale Ag 2Te precipitates and la doping,” Adv. Funct. Mater., vol. 21, no. 2, pp. 241–249, 2011. [4] S. Johnsen et al., “supporting information of Nanostructures boost the thermoelectric performance of PbS.,” J. Am. Chem. Soc., vol. 133, no. 10, pp. 3460–70, 2011. [5] B. Gahtori et al., “Giant enhancement in thermoelectric performance of copper selenide by incorporation of different nanoscale dimensional defect features,” Nano Energy, vol. 13, pp. 36–46, 2015. [6] S. Ahmad et al., “Boosting thermoelectric performance of p-type SiGe alloys through in-situ metallic YSi2 nanoinclusions,” Nano Energy, vol. 27, pp. 282–297, 2016. [7] G. H. Kim, D. H. Hwang, and S. I. Woo, “Thermoelectric properties of nanocomposite thin films prepared with poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) and graphene,” Phys. Chem. Chem. Phys., vol. 14, no. 10, pp. 3530–3536, 2012. [8] H. Sevinçli, C. Sevik, T. Çain, and G. Cuniberti, “A bottom-up route to enhance thermoelectric figures of merit in graphene nanoribbons,” Sci. Rep., vol. 3, pp. 1–6, 2013. [9] Z. G. Chen, G. Hana, L. Yanga, L. Cheng, and J. Zou, “Nanostructured thermoelectric materials: Current research and future challenge,” Prog. Nat. Sci. Mater. Int., vol. 22, no. 6, pp. 535–549, 2012. [10] D. Ginting et al., “High thermoelectric performance due to nano-inclusions and randomly distributed interface potentials in N-type (PbTe0.93-:XSe0.07Clx)0.93(PbS)0.07composites,” J. Mater. Chem. A, vol. 5, no. 26, pp. 13535–13543, 2017. [11] Z. Li et al., “Systhesizing SnTe nanocrystals leading to thermoelectric performance enhancement via an ultra-fast microwave hydrothermal method,” Nano Energy, vol. 28, pp. 78–86, 2016.

Tutor Answer

Bradley92
School: UIUC

Hey dude, I have uplo...

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Anonymous
Good stuff. Would use again.

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