Ultrahigh zT from strong electron–phonon interactions and a low-dimensional Fermi surface

• DOI: 10.1039/d3ee04187e
• Publication Date: 2024-01-27T15:01:16Z
• Authors: V. K. Ranganayakulu; Te-Hsien Wang; Cheng-Lung Chen; Angus Huang; Ma-Hsuan Ma; Chun-Min Wu; Wei-Han Tsai; Tsu-Lien Hung; Min-Nan Ou; Horng-Tay Jeng; Chih-Hao Lee; Kuei-Hsien Chen; Wen-Hsien Li; Madison K. Brod; G. Jeffrey Snyder; Yang-Yuan Chen
• Keywords: 0301 basic medicine; 03 medical and health sciences

An ultrahigh zT of 2.7 at 700 K is achieved in a (Ge 0.86 Sb 0.08 Bi 0.06 )Te single crystal. This outstanding performance attributed to one-dimensional-like electronic structure and the resulting strong electron–phonon interaction.