title: Ultrahigh Thermoelectric Performance in Mosaic Crystals.
abstract: Successful research strategies to enhance the dimensionless figure of merit zT above 2 rely on either bulk nanomaterials or on single crystals. A new physical mechanism of nanoscale mosaicity is shown that goes beyond the approaches in single crystals or conventional nanomaterials. A zT value of 2.1 at 1000 K in bulk nanomaterials is achieved.
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.|CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.|University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: He
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.|University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Lu
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.|CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.
authors.forename: Xun
authors.initials: X
authors.lastname: Shi
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.
authors.forename: Fangfang
authors.initials: F
authors.lastname: Xu
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.
authors.forename: Tiansong
authors.initials: T
authors.lastname: Zhang
authors.affiliation: Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60208, USA.
authors.forename: Gerald Jeffrey
authors.initials: GJ
authors.lastname: Snyder
authors.affiliation: Department of Physics, University of Michigan, Ann Arbor, MI, 48109, USA.
authors.forename: Ctirad
authors.initials: C
authors.lastname: Uher
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.|CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China.|Shanghai Institute of Materials, Genome, Shanghai, 200444, China.
authors.forename: Lidong
authors.initials: L
authors.lastname: Chen
keywords: electrical conductivity; mosaic crystals; thermal conductivity; thermoelectric materials; thermopower