Publisher： John Wiley & Sons Inc
E-ISSN： 1521-4095|27|24|3681-3686
ISSN： 0935-9648
Source： ADVANCED MATERIALS, Vol.27, Iss.24, 2015-06, pp. : 3681-3686
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Simultaneous increases in electrical conductivity (up to 200%) and thermopower (up to 70%) are demonstrated by introducing native defects in Bi2Te3 films, leading to a high power factor of 3.4 × 10−3 W m−1 K−2. The maximum enhancement of the power factor occurs when the native defects act beneficially both as electron donors and energy filters to mobile electrons. They also act as effective phonon scatterers.
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