論文雑誌「Journal of Materials Chemistry A」のカバーピクチャーを制作しました[宮崎大学]

弊社で制作しました宮崎大学 永岡章先生のカバーアートが
イギリスの王立化学会発行の学術雑誌 Journal of Materials Chemistry A
2021年7月号に選ばれました。

カバーピクチャー 科学イラスト 論文表紙絵 アートアクション 宮崎大学 cover picture
Client
宮崎大学
工学教育研究部  環境・エネルギー工学研究センター
永岡章先生
Journal
Journal of Materials Chemistry A
28 July 2021,  Issue 28 Link
Environmentally friendly thermoelectric sulphide Cu2ZnSnS4 single crystals achieving a 1.6 dimensionless figure of merit ZT
Akira Nagaoka*, Kenji Yoshino, Taizo Masuda, Taylor D. Sparks, Michael A. Scarpulla and
Kensuke Nishioka

Thermoelectrics (TEs) are an important class of technology that harvest electric power directly from heat sources. When designing both high performance and environmentally friendly TE materials, the pseudo-cubic structure has great theoretical potential to maximize the dimensionless figure of merit ZT. The TE multinary single crystal with a pseudo-cubic structure paves a new path toward manipulating valley degeneracy and anisotropy with low thermal conductivity caused by short-range lattice distortion. Here, we report a record high ZT = 1.6 around 800 K realized in a totally environmentally benign p-type Na-doped Cu2ZnSnS4 (CZTS) single crystal. The exceptional performance comes from a high power factor while maintaining intrinsically low thermal conductivity. The combination of the pseudo-cubic structure and intrinsic properties of the CZTS single crystal takes advantage of simple material tuning without complex techniques.

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