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Surfactant‐Free Scalable Synthesis of Bi 2 Te 3 and Bi 2 Se 3 Nanoflakes and Enhanced Thermoelectric Properties of Their Nanocomposites
Author(s) -
Min Yuho,
Roh Jong Wook,
Yang Heeseung,
Park Minwoo,
Kim Sang Il,
Hwang Sungwoo,
Lee Sang Mock,
Lee Kyu Hyoung,
Jeong Unyong
Publication year - 2013
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201203764
Subject(s) - materials science , nanocomposite , pulmonary surfactant , thermoelectric effect , chemical engineering , thermoelectric materials , nanotechnology , nanoparticle , composite material , thermodynamics , thermal conductivity , physics , engineering
Surfactant‐free nanoflakes of n‐type Bi 2 Te 3 and Bi 2 Se 3 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% Bi 2 Se 3 in the nanocomposites.