2022 International Conference on Solid State Devices and Materials

講演情報

Oral Presentation

06: Photovoltaic / Energy Harvesting / Battery-related Technology

[C-9] Thermoelectric Devices

2022年9月29日(木) 13:30 〜 15:30 103 (1F)

Session Chair: Shinya Kato (Naogya Inst. of Technology), Takuya Hoshii (Tokyo Tech)

14:30 〜 14:45

[C-9-04] Impact of grain-boundary on thermal conductivity in environmentally friendly thermoelectric sulphide Cu2ZnSnS4

〇Katsuma Nagatomo1, Akira Nagaoka1, Kouichi Okamoto1, Kenji Yoshino1, Kensuke Nishioka1 (1. University of Miyazaki (Japan))

Presentation style: On-site (in-person)

https://doi.org/10.7567/SSDM.2022.C-9-04

Cu2ZnSnS4 (CZTS) single crystal is a high-performance thermoelectric material while using environmentally friendly materials, and its ZT shows 1.6 at 800K. In this study, we investigated the impact of grain-boundary on thermal conductivity in CZTS by the combination of experimental and theoretical results. It was confirmed that the value of thermal conductivity with 0.1 μm grain was 0.9 at 800 K, which is almost the half value of single crystal.

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