Interface‐Enhanced High‐Temperature Thermoelectricity in Cu1.99Se/B4C Composites with Synergistically Improved Mechanical Strength

• Published in: Advanced energy materials Vol. 14; no. 14
• Main Authors: Yu, Jincheng, Hu, Haihua, Jiang, Yilin, Hua‐Lu Zhuang, Hao‐Cheng Thong, Su, Bin, Jing‐Wei Li, Han, Zhanran, Li, Hezhang, Pei, Jun, Jing‐Feng Li
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.04.2024
• Subjects: Anharmonicity; Boron carbide; Carrier density; Carrier mobility; Composite materials; Copper selenides; Electrical resistivity; Electrons; Figure of merit; High temperature; Ion migration; Lattice vibration; Power factor; Thermal conductivity; Thermoelectric materials

Degenerate semiconductors usually demonstrate a metallic‐like conduction behavior, showing limited carrier mobility at high temperatures. Herein, by incorporating B4C nanoparticles into the Cu1.99Se system, an unusual switch from the “degenerate” to “non‐degenerate” semiconducting behavior is reveal...