Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi₂Te₃ by Multifunctionality of Native Defects.
Simultaneous increases in electrical conductivity (up to 200%) and thermopower (up to 70%) are demonstrated by introducing native defects in Bi2 Te3 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.
['Suh|Joonki|J|', 'Yu|Kin Man|KM|', 'Fu|Deyi|D|', 'Liu|Xinyu|X|', 'Yang|Fan|F|', 'Fan|Jin|J|', 'Smith|David J|DJ|', 'Zhang|Yong-Hang|YH|', 'Furdyna|Jacek K|JK|', 'Dames|Chris|C|', 'Walukiewicz|Wladyslaw|W|', 'Wu|Junqiao|J|']
Bi2Te3 defect engineering native point defects particle irradiation thermoelectric properties