J
Jinfeng Dong
Researcher at Tsinghua University
Publications - 36
Citations - 1955
Jinfeng Dong is an academic researcher from Tsinghua University. The author has contributed to research in topics: Thermoelectric effect & Thermoelectric materials. The author has an hindex of 16, co-authored 36 publications receiving 967 citations. Previous affiliations of Jinfeng Dong include Nanyang Technological University.
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Journal ArticleDOI
High thermoelectric performance in low-cost SnS 0.91 Se 0.09 crystals.
Wenke He,Dongyang Wang,Haijun Wu,Yu Xiao,Yang Zhang,Dongsheng He,Yue Feng,Yu-Jie Hao,Jinfeng Dong,Raju Chetty,Lijie Hao,Dongfeng Chen,Jianfei Qin,Qiang Yang,Xin Li,Jian-Ming Song,Yingcai Zhu,Wei Xu,Changlei Niu,Guangtao Wang,Chang Liu,Michihiro Ohta,Stephen J. Pennycook,Jiaqing He,Jing-Feng Li,Li-Dong Zhao +25 more
TL;DR: The temperature-dependent interplay of three separate electronic bands in hole-doped tin sulfide (SnS) crystals leads to synergistic optimization between effective mass and carrier mobility and can be boosted through introducing selenium (Se), enhancing the power factor and lowering the thermal conductivity after Se alloying.
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Medium-temperature thermoelectric GeTe: vacancy suppression and band structure engineering leading to high performance
Jinfeng Dong,Fu-Hua Sun,Huaichao Tang,Jun Pei,Hua-Lu Zhuang,Haihua Hu,Bo-Ping Zhang,Yu Pan,Yu Pan,Jing-Feng Li +9 more
TL;DR: In this paper, a significant ZT enhancement from 1.0 to 2.0 by suppressing the formation of Ge vacancies and band convergence was achieved by simply optimizing the amount of excessive Ge, which greatly reduced the hole carrier concentration.
Journal ArticleDOI
Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments.
Bingchao Qin,Dongyang Wang,Xixi Liu,Yongxin Qin,Jinfeng Dong,Jiangfan Luo,Jing Wei Li,Wei Liu,Gangjian Tan,Xinfeng Tang,Jing-Feng Li,Jiaqing He,Li-Dong Zhao +12 more
TL;DR: In this article, the authors developed SnSe crystals with a wide bandgap of 33 kBT with attractive thermoelectric properties through Pb alloying, which achieved an ultra-high power factor of 75 μWcm-1K-2 at 300 K and a ZTave of 1.90.
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Melt-Centrifuged (Bi,Sb)2Te3: Engineering Microstructure toward High Thermoelectric Efficiency
Yu Pan,Yu Pan,Umut Aydemir,Umut Aydemir,Jann A. Grovogui,Ian T. Witting,Riley Hanus,Yaobin Xu,Jinsong Wu,Chao-Feng Wu,Fu-Hua Sun,Hua-Lu Zhuang,Jinfeng Dong,Jing-Feng Li,Vinayak P. Dravid,G. Jeffrey Snyder +15 more
TL;DR: A method for synthesizing high-efficiency porous thermoelectric materials through an unconventional melt-centrifugation technique, resulting in a porous network with a platelet structure with a zT value higher than fully dense conventional zone melted ingots and hot pressed (Bi,Sb)2 Te3 alloys.
Journal ArticleDOI
Enhanced mid-temperature thermoelectric performance of textured SnSe polycrystals made of solvothermally synthesized powders
TL;DR: In this paper, the thermoelectric properties of textured SnSe polycrystals, which are made of solvothermally synthesized powders with a preferred orientation grown along the (400) plane, can be enhanced, especially in the range of mid-temperatures.