Direct tuning of electrical properties in nano-structured Bi2Se0.3Te2.7 by reversible electrochemical lithium reactions

Jikun Chen; Xiaoyuan Zhou; G. Jeffrey Snyder; Ctirad Uher; Nuofu Chen; Zhaoyin Wen; Jun Jin; Hongliang Dong; Pengfei Qiu; Yanfei Zhou; Xun Shi; Lidong Chen

doi:10.1039/C1CC15498B

Direct tuning of electrical properties in nano-structured Bi₂Se_0.3Te_2.7 by reversible electrochemical lithium reactions†

Jikun Chen,^a Xiaoyuan Zhou,^b G. Jeffrey Snyder,^c Ctirad Uher,^b Nuofu Chen,^d Zhaoyin Wen,^a Jun Jin,^a Hongliang Dong,^a Pengfei Qiu,^a Yanfei Zhou,^a Xun Shi*^a and Lidong Chen*^a

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* Corresponding authors

^a CAS Key laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai 200050, China
E-mail: chenlidong@mail.sic.ac.cn

^b Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA

^c Materials Science, California Institute of Technology, Pasadena, USA

^d School of Renewable Energy, North China Electric Power University, Beijing 102206, China

Abstract

Lithium intercalation and de-intercalation processes have been used to fabricate bulk Bi₂Se_0.3Te_2.7 with internal nanostructures. The doped Li content can be precisely controlled through this method. It provides a chance to directly optimize electrical properties when preparing nano-structured materials, leading to the optimum carrier concentration for improved thermoelectric figure of merit.

Chemical Communications

Direct tuning of electrical properties in nano-structured Bi₂Se_0.3Te_2.7 by reversible electrochemical lithium reactions†

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Direct tuning of electrical properties in nano-structured Bi₂Se_0.3Te_2.7 by reversible electrochemical lithium reactions

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