Abnormal Seebeck Effect in Vertically Stacked 2D/2D PtSe2/PtSe2 Homostructure

Lee, Won-Yong (author): Uppsala universitet,Fasta tillståndets elektronik,Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea

Kang, Min-Sung (author): Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea.

Choi, Jae Won (author): Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea.

Kim, Si-Hoo (author): Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea.

Park, No-Won (author): Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea.

Kim, Gil-Sung (author): Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea.

Kim, Yun-Ho (author): Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea.

Yoon, Young-Gui (author): Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea.

Lee, Sang-Kwon (author): Chung Ang Univ, Ctr Berry Curvature Based New Phenomena, Dept Phys, Seoul 06974, South Korea.

(creator_code:org_t)

2022-11-10
2022
English.
In: Advanced Science. - : Wiley-VCH Verlagsgesellschaft. - 2198-3844. ; 9:36

Related links:: https://doi.org/10.1...; show more...; https://uu.diva-port... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

When a thermoelectric (TE) material is deposited with a secondary TE material, the total Seebeck coefficient of the stacked layer is generally represented by a parallel conductor model. Accordingly, when TE material layers of the same thickness are stacked vertically, the total Seebeck coefficient in the transverse direction may change in a single layer. Here, an abnormal Seebeck effect in a stacked two-dimensional (2D) PtSe2/PtSe2 homostructure film, i.e., an extra in-plane Seebeck voltage is produced by wet-transfer stacking at the interface between the PtSe2 layers under a transverse temperature gradient is reported. This abnormal Seebeck effect is referred to as the interfacial Seebeck effect in stacked PtSe2/PtSe2 homostructures. This effect is attributed to the carrier-interface interaction, and has independent characteristics in relation to carrier concentration. It is confirmed that the in-plane Seebeck coefficient increases as the number of stacked PtSe2 layers increase and observed a high Seebeck coefficient exceeding ≈188 µV K−1 at 300 K in a four-layer-stacked PtSe2/PtSe2 homostructure.

By the author/editor: Lee, Won-Yong; Kang, Min-Sung; Choi, Jae Won; Kim, Si-Hoo; Park, No-Won; Kim, Gil-Sung; show more...; Kim, Yun-Ho; Saitoh, Eiji; Yoon, Young-Gui; Lee, Sang-Kwon; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Condensed Matter ...

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