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Large‐Scale Synthesis and Characterization of the Size‐Dependent Thermoelectric Properties of Uniformly Sized Bismuth Nanocrystals
Author(s) -
Son Jae Sung,
Park Kunsu,
Han MiKyung,
Kang Chanyoung,
Park SungGeun,
Kim JaeHee,
Kim Woochul,
Kim SungJin,
Hyeon Taeghwan
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201005023
Subject(s) - nanocrystal , bismuth , figure of merit , characterization (materials science) , thermoelectric effect , thermal conductivity , materials science , simple (philosophy) , thermoelectric materials , nanotechnology , scale (ratio) , computer science , optoelectronics , physics , composite material , thermodynamics , metallurgy , philosophy , epistemology , quantum mechanics
Pressed Bi nanocrystals synthesized by a simple colloidal method exhibited very high electrical conductivity of 10 4 –10 5 S m −1 and extremely low thermal conductivity of 0.35 W m −1 K −1 . The synthetic method can be used for the inexpensive preparation of highly efficient thermoelectric materials by engineering the size of nanocrystals (see picture; scale bar 50 nm; ZT =figure of merit).
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