Preparation of n‐type Bi2Te3 thermoelectric materials by non‐contact dispenser printing combined with selective laser melting. Issue 6 (17th May 2017)

• Record Type: Journal Article
• Authors: Wu, Keping; Yan, Yonggao; Zhang, Jian; Mao, Yu; Xie, Hongyao; Yang, Jihui; Zhang, Qingjie; Uher, Ctirad; Tang, Xinfeng
• Is Part Of: Physica status solidi. Volume 11:Issue 6(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-05-17
• Subjects: non‐contact dispenser printing -- n‐type Bi2Te3 -- selective laser melting -- thermoelectric materials; Solid state physics -- Periodicals; 530.4105
• DOI: 10.1002/pssr.201700067
• Languages: English
• ISSNs: 1862-6254

Abstract

Abstract : The manufacturing cost has been a bottle neck for broader applications of thermoelectric (TE) modules. We have developed a rapid, facile, and low cost method that combines non‐contact dispenser printing with selective laser melting (SLM) and we demonstrate it on n‐type Bi2 Te3 ‐based materials. Using this approach, single phase n‐type Bi2 Te2.7 Se0.3 thin layers with the Seebeck coefficient of −152 µV K −1 at 300 K have been prepared. Assembling such thin layers on top of each other, the performance of thus prepared bulk sample is comparable to Bi2 Te3 ‐based materials fabricated by the conventional techniques. Dispenser printing combined with SLM is a promising manufacturing process for TE materials. Abstract : The n‐type Bi2 Te3 thermoelectric materials have been prepared by a novel, rapid and low cost 3D printing method that combines non‐contact dispenser printing and selective laser melting (SLM). The Bi2 Te3 materials prepared by this method show comparable thermoelectric transport properties with those prepared by zone melting or sintering process. This new preparation method lays a significant foundation for additive manufacturing of thermoelectric modules.