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.
Original language | English (US) |
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Pages (from-to) | 3681-3686 |
Number of pages | 6 |
Journal | Advanced Materials |
Volume | 27 |
Issue number | 24 |
DOIs | |
State | Published - Jun 1 2015 |
Keywords
- BiTe
- defect engineering
- native point defects
- particle irradiation
- thermoelectric properties
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering