期刊
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
卷 72, 期 8, 页码 841-857出版社
KOREAN PHYSICAL SOC
DOI: 10.3938/jkps.72.841
关键词
2D materials; SnSe; MBE; Thin film; Bridgmann; Thermoelectric; Review of SnSe; Temperature gradient technique
资金
- National Research Foundation of Korea [NRF-2009-093818, NRF-2014R1A4A1071686]
SnSe is a 2D semiconductor with an indirect energy gap of 0.86 - 1 eV; it is widely used in solar cell, optoelectronics, and electronic device applications. Recently, SnSe has been considered as a robust candidate for energy conversion applications due to its high thermoelectric performance (ZT = 2.6 in p-type and 2.2 in n-type), which is assigned mainly to its anhamornic bonding leading to an ultralow thermal conductivity. In this review, we first discuss the crystalline and electronic structures of SnSe and the source of its p-type characteristic. Then, some typical single crystal and polycrystal growth techniques, as well as an epitaxial thin film growth technique, are outlined. The reported thermoelectric properties of SnSe grown by using each technique are also reviewed. Finally, we will describe some remaining issues concerning the use of SnSe for thermoelectric applications.
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