Temperature-Dependent Thermal Transport of Polycrystalline van der Waals Semimetallic PtSe2 Films
- Authors
- Park, No-Won; Lee, Hyejeong; Choi, Jae-Won; Shin, Hosun; Kang, Min-Sung; Kim, Si-Hoo; Cho, Jung-Min; Kim, Min-Jeong; Kim, Gil-Sung; Lee, Sang Kwon
- Issue Date
- Jul-2023
- Publisher
- AMER CHEMICAL SOC
- Citation
- JOURNAL OF PHYSICAL CHEMISTRY C, v.127, no.28, pp 13556 - 13561
- Pages
- 6
- Journal Title
- JOURNAL OF PHYSICAL CHEMISTRY C
- Volume
- 127
- Number
- 28
- Start Page
- 13556
- End Page
- 13561
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/67558
- DOI
- 10.1021/acs.jpcc.3c03089
- ISSN
- 1932-7447
1932-7455
- Abstract
- We report both phononic and electronic transports ofpolycrystallinelarge-area platinum diselenide (PtSe2) thin films by measuringin-plane thermal conductivity and the Seebeck coefficient using asuspended bridge-type method and a strain gauge-controlled suspendplatform, respectively. We observe the greatly suppressed in-planethermal conductivity of & SIM;2.6 W/m & BULL;K, which is approximately670% suppressed value, for 11 nm thick polycrystalline PtSe2 films as compared to that of an exfoliated similarly thick in-planesingle-crystalline PtSe2 layer at 300 K. This reductionis attributed to the enhanced phonon scattering in polycrystallinePtSe(2) thin films. The measured in-plane Seebeck coefficientand electrical conductivity of the samples are as high as & SIM;79 & mu;V/K and & SIM;416 S/cm at 300 K, respectively. Our findingscan pave the way toward an effective strategy for promising large-areaTE energy harvesting devices with a high figure-of-merit in 2D semimetallictransition-metal dichalcogenide materials.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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