ABSTRACT In early 90s, Hicks and Dresselhaus proposed that low dimensional materials are advantages for thermoelectric applications due to the sharp features in their density-of-states, resulting in a high Seebeck coefficient and, potentially, in a high thermoelectric power factor. Two-dimensional (2D) materials are the latest class of low dimensional materials studied for thermoelectric applications. The experimental exfoliation of graphene, a single-layer of carbon atoms in 2004, triggered an avalanche of studies devoted to 2D materials in view of electronic, thermal, and optical applications. One can mix and match and stack 2D layers to form van der Waals hetero-structures. Such structures have extreme anisotropic transport properties. Both in-plane and cross-plane thermoelectric transport in these structures are of interest. In this short review article, we first review the progress achieved so far in the study of thermoelectric transport properties of graphene, the most widely studied 2D material, as a representative of interesting in-plane thermoelectric properties. Then, we turn our attention to the layered materials, in their cross-plane direction, highlighting their role as potential structures for solid-state thermionic power generators and coolers.

中文翻译：

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石墨烯和二维层状材料中的热电传输

摘要 在 90 年代初，Hicks 和 Dresselhaus 提出，低维材料在热电应用中具有优势，因为它们的态密度具有鲜明的特征，从而导致较高的塞贝克系数，并可能具有较高的热电功率因数。二维 (2D) 材料是为热电应用研究的最新一类低维材料。2004 年，单层碳原子石墨烯的实验剥离引发了大量针对电子、热和光学应用的二维材料研究。可以混合、匹配和堆叠二维层以形成范德华异质结构。这种结构具有极端的各向异性输运特性。这些结构中的平面内和跨平面热电传输都令人感兴趣。在这篇简短的评论文章中，我们首先回顾了迄今为止在石墨烯热电传输特性研究方面取得的进展，石墨烯是研究最广泛的二维材料，作为有趣的面内热电特性的代表。然后，我们将注意力转向层状材料，在它们的横截面方向上，强调它们作为固态热离子发电机和冷却器的潜在结构的作用。