Doping Effect on Cu2Se Thermoelectric Performance: A Review

Materials

Liangliang Yang¹  Mingliang Zhang¹  Fuhua Yang¹  Yuanhao Qin¹  Xiaodong Wang¹  Shuqi Yang²  Jiangtao Wei³ 

[1] College of Microelectronics and Research Center of Materials and Optoelectronics, University of Chinese Academy of Sciences, Beijing 100049, China;Electrical, Computer, and Systems Engineering Department, Rensselaer Polytechnic Institute Troy, New York, NY 12180, USA;Engineering Research Center for Semiconductor Integrated Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China;

关键词: Cu₂Se;    thermoelectric performance;    thermal conductivity;    electrical conductivity;    Seebeck effect;    doping effect;   

DOI  :  10.3390/ma13245704

来源: DOAJ

【 摘 要 】

Cu₂Se, owing to its intrinsic excellent thermoelectric (TE) performance emerging from the peculiar nature of “liquid-like” Cu⁺ ions, has been regarded as one of the most promising thermoelectric materials recently. However, the commercial use is still something far from reach unless effective approaches can be applied to further increase the figure of merit (ZT) of Cu₂Se, and doping has shown wide development prospect. Until now, the highest ZT value of 2.62 has been achieved in Al doped samples, which is twice as much as the original pure Cu₂Se. Herein, various doping elements from all main groups and some transitional groups that have been used as dopants in enhancing the TE performance of Cu₂Se are summarized, and the mechanisms of TE performance enhancement are analyzed. In addition, points of great concern for further enhancing the TE performance of doped Cu₂Se are proposed.

【 授权许可】

Unknown