Hierarchical Architectural Structures Induce High Performance in n‐Type GeTe‐Based Thermoelectrics

• Published in: Advanced functional materials Vol. 33; no. 14
• Main Authors: Wang, De‐Zhuang, Liu, Wei‐Di, Li, Meng, Zheng, Kun, Hu, Hanwen, Yin, Liang‐Cao, Wang, Yifeng, Zhu, He, Shi, Xiao‐Lei, Yang, Xiaoning, Liu, Qingfeng, Chen, Zhi‐Gang
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc 01.04.2023
• Subjects: Alloying; Carrier density; devices; figure of merit; Free energy; Heat of formation; Materials science; Modules; n‐type GeTe; Point defects; Power factor; Precipitates; Thermal conductivity; Thermoelectricity; thermoelectrics

Compatible p‐ and n‐type materials are necessary for high‐performance GeTe thermoelectric modules, where the n‐type counterparts are in urgent need. Here, it is reported that the p‐type GeTe can be tuned into n‐type by decreasing the formation energy of Te vacancies via AgBiTe2 alloying. AgBiTe2 all...