3D charge and 2D phonon transports leading to high out-of-plane <i>ZT</i> in n-type SnSe crystals

Chang, Cheng; Wu, Minghui; He, Dongsheng; Pei, Yanling; Wu, Chaofeng; Wu, Xuefeng; Yu, Hulei; Zhu, Fangyuan; Wang, Kedong; Chen, Yue; Huang, Li; Li, Jing‐Feng; He, Jiaqing; Zhao, Li‐Dong

doi:10.1126/science.aaq1479

Public

3D charge and 2D phonon transports leading to high out-of-plane ZT in n-type SnSe crystals

Published in Science • May 17, 2018

Authors:

Cheng Chang

Minghui Wu

Dongsheng He

Abstract

of ~2.8 ± 0.5 at 773 kelvin in n-type tin selenide (SnSe) crystals out of plane. The thermal conductivity in layered SnSe crystals is the lowest in the out-of-plane direction [two-dimensional (2D) phonon transport]. We doped SnSe with bromine to make n-type SnSe crystals with the overlapping interla...

Subject

Thermoelectric effect

Thermoelectric materials

Thermal conductivity

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