期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 12, 期 34, 页码 8246-8255出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.1c02139
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资金
- International Cooperation Project of Ministry of Science and Technology of China [2017YFE0107800]
- National Natural Science Foundation of China [91963208, 51961135106]
- CAS-DOE Program of Chinese Academy of Sciences [121631KYSB20180060]
- Shanghai Rising-Star Program [19QA1410200]
- Nature Science Foundation of Shanghai [19ZR1419900]
- Shanghai Science and Technology Commission [21010500900]
Silver selenide (Ag2Se) is a promising low-temperature thermoelectric material with good thermoelectric properties that can be used to harvest low-quality waste heat for power generation or cooling microelectronics. In this study, Ag2Se was prepared using the zone-melting method, and its electrical and thermal transport properties were systematically investigated.
Silver selenide, Ag2Se, is a promising low-temperature thermoelectric material which can be used to harvest the low-quality waste heat for electrical power generation or cool the microelectronics. Currently, the investigation on Ag2Se and its derivatives has become a hot topic in the thermoelectric community, but the thermoelectric properties of Ag2Se below 300 K have been rarely investigated. In this study, we prepared Ag2Se by using the zone-melting method. The electrical and thermal transport properties of zone-melted Ag2Se from 5 to 380 K were systematically investigated and compared with the previously reported data of Ag2Se and other typical low-temperature thermoelectric materials, such as Mg3Bi2, Bi2Te3, and BiSb. Ag2Se shows intrinsic semiconductor features, ultrahigh carrier mobility, small density-of-state effective mass, and ultralow lattice thermal conductivity. At 300 K, the zT of zone-melted Ag2Se is 0.75. This study will shed light on the further investigation of Ag2Se.
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