Thermal and Electronic Properties of Exfoliated Metal Chalcogenides

Bulletin of the Korean chemical society

Woo Seok Cho¹  Soon Mok Choi¹  Won Seon Seo¹  Jong Young Kim¹ 

关键词: Thermal properties;    Electrical properties;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The thermal conductivity of layered metal chalcogenides such as MT2 (M = Mo, W; T = S, Se) shows a marked decrease after exfoliation and subsequent restacking process. Random stacking of two-dimensional crystalline sheets circumvents thermal conduction pathways along a longitudinal direction, which results in a reduction in thermal conductivity. WS2 and WSe2 compounds retain p-type conducting behavior after exfoliation and restacking with decreased electrical conductivity due to the change in carrier concentration. MoSe2 compound exhibits metallic behavior < 130 oC with a small Seebeck coefficient, which results from metastable 1T-MoSe2 structure of the restacked phase.

【 授权许可】

Unknown