» Articles » PMID: 36354191

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

Overview
Journal Adv Sci (Weinh)
Date 2022 Nov 10
PMID 36354191
Authors
Affiliations
Soon will be listed here.
Abstract

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) PtSe /PtSe homostructure film, i.e., an extra in-plane Seebeck voltage is produced by wet-transfer stacking at the interface between the PtSe layers under a transverse temperature gradient is reported. This abnormal Seebeck effect is referred to as the interfacial Seebeck effect in stacked PtSe /PtSe 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 PtSe layers increase and observed a high Seebeck coefficient exceeding ≈188 µV K at 300 K in a four-layer-stacked PtSe /PtSe homostructure.

Citing Articles

Abnormal Seebeck Effect in Vertically Stacked 2D/2D PtSe /PtSe Homostructure.

Lee W, Kang M, Choi J, Kim S, Park N, Kim G Adv Sci (Weinh). 2022; 9(36):e2203455.

PMID: 36354191 PMC: 9799017. DOI: 10.1002/advs.202203455.

References
1.
Zhao L, Lo S, Zhang Y, Sun H, Tan G, Uher C . Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals. Nature. 2014; 508(7496):373-7. DOI: 10.1038/nature13184. View

2.
Umar A, Md Saad S, Mat Salleh M . Scalable Mesoporous Platinum Diselenide Nanosheet Synthesis in Water. ACS Omega. 2019; 2(7):3325-3332. PMC: 6641590. DOI: 10.1021/acsomega.7b00580. View

3.
Uchida K, Ishida M, Kikkawa T, Kirihara A, Murakami T, Saitoh E . Longitudinal spin Seebeck effect: from fundamentals to applications. J Phys Condens Matter. 2014; 26(34):343202. DOI: 10.1088/0953-8984/26/34/343202. View

4.
Kikkawa T, Uchida K, Shiomi Y, Qiu Z, Hou D, Tian D . Longitudinal spin Seebeck effect free from the proximity Nernst effect. Phys Rev Lett. 2013; 110(6):067207. DOI: 10.1103/PhysRevLett.110.067207. View

5.
Moon H, Bang J, Hong S, Kim G, Roh J, Kim J . Strong Thermopower Enhancement and Tunable Power Factor Semimetal to Semiconductor Transition in a Transition-Metal Dichalcogenide. ACS Nano. 2019; 13(11):13317-13324. DOI: 10.1021/acsnano.9b06523. View