Y
Yongsheng Zhang
Researcher at Chinese Academy of Sciences
Publications - 23
Citations - 4392
Yongsheng Zhang is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Thermoelectric effect & Thermoelectric materials. The author has an hindex of 7, co-authored 8 publications receiving 3333 citations. Previous affiliations of Yongsheng Zhang include Northwestern University & University of Science and Technology of China.
Papers
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Journal ArticleDOI
Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals
Li-Dong Zhao,Shih Han Lo,Yongsheng Zhang,Hui Sun,Gangjian Tan,Ctirad Uher,Chris Wolverton,Vinayak P. Dravid,Mercouri G. Kanatzidis +8 more
TL;DR: An unprecedented ZT of 2.6 ± 0.3 at 923 K is reported in SnSe single crystals measured along the b axis of the room-temperature orthorhombic unit cell, which highlights alternative strategies to nanostructuring for achieving high thermoelectric performance.
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Origin of low thermal conductivity in SnSe
Yu Xiao,Cheng Chang,Yanling Pei,Di Wu,Kunling Peng,Xiaoyuan Zhou,Shengkai Gong,Jiaqing He,Yongsheng Zhang,Yongsheng Zhang,Zhi Zeng,Zhi Zeng,Li-Dong Zhao +12 more
TL;DR: In this paper, the authors provide direct evidence to understand the origin of low thermal conductivity of lead chalcogenides using elastic measurements, which is attributed to the extremely weak Sn-Se atomic interactions (or bonds between layers).
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Lattice thermal conductivity evaluated using elastic properties
TL;DR: In this article, the authors established a methodology to determine the Debye temperature, Gruneisen parameter, and lattice thermal conductivity using computationally feasible elastic properties (the bulk and shear moduli).
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Pressure induced thermoelectric enhancement in SnSe crystals
TL;DR: In this paper, the authors used computational methods to show how pressure intrinsically enhances the thermoelectric properties below 700 K along the three directions (a, b and c) of the crystal (the low-T SnSe-Pnma phase) due to the significant electrical transport boost.
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Nonlocal first-principles calculations in Cu-Au and other intermetallic alloys.
TL;DR: Modern extensions of DFT based on nonlocal interactions can rectify two dramatic failures in describing the energies of Cu-Au, and shed light on improving the theoretical predictions for alloy systems to determine accurate formation energies, order-disorder critical temperatures, phase diagrams, and high-throughput computations.