Surfactant-free scalable synthesis of Bi2 Te3 and Bi2Se3 nanoflakes and enhanced thermoelectric properties of their nanocomposites

Yuho Min; Jong Wook Roh; Heeseung Yang; Minwoo Park; Sang Il Kim; Sungwoo Hwang; Sang Mock Lee; Kyu Hyoung Lee; Unyong Jeong

doi:10.1002/adma.201203764

Surfactant-free scalable synthesis of Bi2 Te3 and Bi2Se3 nanoflakes and enhanced thermoelectric properties of their nanocomposites

Adv Mater. 2013 Mar 13;25(10):1425-9. doi: 10.1002/adma.201203764. Epub 2012 Nov 15.

Authors

Yuho Min¹, Jong Wook Roh, Heeseung Yang, Minwoo Park, Sang Il Kim, Sungwoo Hwang, Sang Mock Lee, Kyu Hyoung Lee, Unyong Jeong

Affiliation

¹ Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seoul, Korea.

PMID: 23161759
DOI: 10.1002/adma.201203764

Abstract

Surfactant-free nanoflakes of n-type Bi2 Te3 and Bi2 Se3 are synthesized in high yields. Their suspensions are mixed to create nanocomposites with heterostructured nanograins. A maximum ZT (0.7 at 400 K) is achieved with a broad content of 10-15% Bi2 Se3 in the nanocomposites.

Publication types

Research Support, Non-U.S. Gov't