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Literature DB >> 25974062

Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi₂Te₃ by Multifunctionality of Native Defects.

Joonki Suh^1,2, Kin Man Yu^1,2, Deyi Fu^1,2, Xinyu Liu³, Fan Yang⁴, Jin Fan⁵, David J Smith⁵, Yong-Hang Zhang⁶, Jacek K Furdyna³, Chris Dames⁴, Wladyslaw Walukiewicz^1,2, Junqiao Wu^1,2.

Abstract

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.

Entities: Chemical

Keywords: Bi2Te3; defect engineering; native point defects; particle irradiation; thermoelectric properties

Year: 2015 PMID： 25974062 DOI： 10.1002/adma.201501350

Source DB: PubMed Journal: Adv Mater ISSN： 0935-9648 Impact factor: 30.849

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Cited

5 in total

Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi₂Te₃ by Multifunctionality of Native Defects.

1. Self-Tuning n-Type Bi₂(Te,Se)₃/SiC Thermoelectric Nanocomposites to Realize High Performances up to 300 °C.

2. Using defects to store energy in materials - a computational study.

3. A Novel Interstitial Site in Binary Rock-Salt Compounds.

4. Inhibition of unintentional extra carriers by Mn valence change for high insulating devices.

5. Tuning the electrical transport of type II Weyl semimetal WTe₂ nanodevices by Ga+ ion implantation.

Simultaneous Enhancement of Electrical Conductivity and Thermopower of Bi₂Te₃ by Multifunctionality of Native Defects.

1. Self-Tuning n-Type Bi2(Te,Se)3/SiC Thermoelectric Nanocomposites to Realize High Performances up to 300 °C.

2. Using defects to store energy in materials - a computational study.

3. A Novel Interstitial Site in Binary Rock-Salt Compounds.

4. Inhibition of unintentional extra carriers by Mn valence change for high insulating devices.

5. Tuning the electrical transport of type II Weyl semimetal WTe2 nanodevices by Ga+ ion implantation.

1. Self-Tuning n-Type Bi₂(Te,Se)₃/SiC Thermoelectric Nanocomposites to Realize High Performances up to 300 °C.

5. Tuning the electrical transport of type II Weyl semimetal WTe₂ nanodevices by Ga+ ion implantation.