naa a22 4500 510802737 CHVBK 20180411083402.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11664-012-2324-y doi (NATIONALLICENCE)springer-10.1007/s11664-012-2324-y Grain-Size-Dependent Thermoelectric Properties of SrTiO3 3D Superlattice Ceramics [Elektronische Daten] [Rui-zhi Zhang, Kunihito Koumoto] The thermoelectric (TE) performance of SrTiO3 (STO) 3D superlattice ceramics with 2D electron gas grain boundaries (GBs) was theoretically investigated. The grain size dependence of the power factor, lattice thermal conductivity, and ZT value were calculated by using Boltzmann transport equations. It was found that nanostructured STO ceramics with smaller grain size have larger ZT value. This is because the quantum confinement effect, energy filtering effect, and interfacial phonon scattering at GBs all become stronger with decreasing grain size, resulting in higher power factor and lower lattice thermal conductivity. These findings will aid the design of nanostructured oxide ceramics with high TE performance. TMS, 2012 Thermoelectrics nationallicence perovskite oxides nationallicence Boltzmann transport equation nationallicence energy filtering effect nationallicence Zhang Rui-zhi Department of Physics, State Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), Northwest University, 710069, Xi'an, China aut Koumoto Kunihito Graduate School of Engineering, Nagoya University, 464-8603, Nagoya, Japan aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1568-1572 0361-5235 42:7<1568 2013 42 11664 https://doi.org/10.1007/s11664-012-2324-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-012-2324-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Rui-zhi Department of Physics, State Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), Northwest University, 710069, Xi'an, China aut NATIONALLICENCE 700 1- Koumoto Kunihito Graduate School of Engineering, Nagoya University, 464-8603, Nagoya, Japan aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/7(2013-07-01), 1568-1572 0361-5235 42:7<1568 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer